JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Zhiguo Li,Fangbo Zhao,Chengbao Geng,Hongxu Chen,Liu Yang,Wennan Liu
The efficient separation of lithium (Li + ) and magnesium (Mg 2+ ) from salt-lake brines remains a critical challenge due to their similar hydrated radii. Herein, we report a novel dual-charged Janus nanofiltration (NF) membrane fabricated via 3D electrospray printing for precise Li + /Mg 2+ separation. The membrane features a negatively charged bottom layer and a positively charged top layer. Crucially, an amphiphilic ionic liquid ([Bmim][BF 4 ]) was introduced into the polyethyleneimine (PEI) aqueous phase of the top layer as a modulator. This ionic liquid enhanced PEI diffusion across the liquid-liquid interface, significantly increasing the density of residual amino groups. Consequently, the optimized membrane (EP-P 30 ) exhibited a highly positive surface charge (22.63 mV at pH 7), increased hydrophilicity, and a narrow pore size distribution. These structural and chemical optimizations translated to exceptional separation performance. The EP-P 30 membrane achieved a high pure water permeance of 13.88 L m −2 h −1 bar −1 and an outstanding Li + /Mg 2+ separation factor of 85.64 in an equimolar mixed solution. Mechanistic analysis revealed that this precise fractionation is governed by the synergistic effects of strong electrostatic repulsion against divalent Mg 2+ and the lower hydration energy of monovalent Li + , which facilitates its rapid dehydration and permeation. This study provides an innovative and scalable strategy for designing high-performance NF membranes for lithium extraction.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2026
·
IF 19.9
Lianlian He,Yong Chen,Yuming Xin,Yu Han,Zhiye Hao,Xu Yang,Hao Wang,Shunshun Zhao,Qimin Peng,Guoxiu Wang,Shimou Chen
Although quasi–solid–state lithium–metal batteries (QSSLMBs) coupled with high–Ni cathodes promise high energy density, their unstable electrode interfaces limit lifespan and safety. Here, we report a soluble coordination polymer network bearing Ni 2+ ion–imprinted polymer (IIP) functionality for dynamic interfacial protection of Ni–rich cathodes. Through rational macromolecular design, an imidazole–rich Ni 2+ IIP was engineered to preferentially adsorb on Ni–rich cathode surfaces. Further tailoring of the copolymer composition enables a stable and soluble IIP network that provides dynamic interfacial protection, which enhances the oxidative stability of conventional polyether electrolytes while unexpectedly accelerating interfacial kinetics. The design rationale was confirmed by in situ Fourier–transform infrared spectroscopy, in situ X–ray diffraction, 2D nuclear magnetic resonance spectroscopy, and other complementary characterizations. Thus, the synthesized IIP electrolyte enables durable Li||NCM811 operation at 4.5 V, with discharge capacities above 150 mAh g −1 at 3C and reliable cycling at −20°C. This polymer–network–mediated interfacial chemistry offers an effective route toward practical high-voltage QSSLMBs.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 27
·19662-19672
·
IF 4.4
Zhang Qiuping,Ran Mengyuan,Cui Kun,Yang Xiaojie,Zhang Hao,Xiao Lina,Wu Yanling,Wang Zhuosen
In the lithium–sulfur (Li–S) batteries, developing catalytic materials to accelerate polysulfide redox kinetics and effectively mitigate the shuttle effect is crucial, as nonpolar carbon materials provide only physical confinement without offering catalytic activity. In this work, a novel functional interlayer is constructed by uniformly anchoring silver quantum dots (AgQDs) onto a MXene substrate, forming an AgQDs@MXene composite. This engineered interlayer is introduced into Li–S batteries to simultaneously address the challenges of polysulfide shuttle and sluggish redox kinetics. The abundant surface functional groups and high conductivity of MXene, coupled with the strong chemisorptive interactions and catalytic activity of AgQDs, enable effective immobilization of soluble lithium polysulfides and accelerated conversion reactions during cycling. As a result, Li–S batteries assembled with the AgQDs@MXene interlayer exhibit remarkable electrochemical performance, including enhanced capacity retention, prolonged cycling stability, and excellent rate capability. These improvements significantly outperform cells with conventional polypropylene (PP) separators, highlighting the potential of AgQDs@MXene as a multifunctional interface for high-energy–density and long-life Li–S batteries. Graphical abstract The alternative text for this image may have been generated using AI.
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 8
·e70484
·
IF 12.1
Ying Li,Guiru Sun,Dandan Wang,Daming Yang,Qi Mi,Xinru Wang,Dongxu Yin,Baoxin Ni,Wei Lu,Ming Feng
en This link goes to a English section zh This link goes to a Chinese section Li–O 2 batteries garner widespread attention owing to their remarkable theoretical specific capacity. Nevertheless, the feasible implementation of the system is hindered by sluggish cathode reaction kinetics and poor anode stability. Herein, the carbon dots (CDs) with -OH, -NH 2 , and -COOH groups are synthesized and employed as electrolyte additives for Li–O 2 batteries. The CDs are well-dispersed in the electrolyte which promotes the formation of Li 2 O 2 through hydrogen bond-mediated dissolution, whereas their high catalytic activity simultaneously facilitates Li 2 O 2 decomposition, thereby enhancing cathode reaction kinetics. Additionally, CDs can suppress dendrite growth on the Li anode and reduce dead Li accumulation by improving the properties of the electrolyte, including ionic conductivity, raising the Li + transference number, ensuring strong electronic insulation, and altering the Li + solvation structure. Therefore, the introduction of CDs enables the Li–O 2 battery to achieve a discharge capacity of 5422.2 mAh g −1 and maintain stable cycling performance of 700 h at 100 mA g −1 . This work underscores the remarkable efficacy of CDs electrolyte additive in enhancing the performance of the Li–O 2 battery, providing a new direction for addressing existing challenges of the battery. 摘要 en This link goes to a English section zh This link goes to a Chinese section 锂氧电池因其超高的理论比容量而备受关注,但受限于正极反应动力学迟缓、锂负极稳定性差等问题,其实际应用仍面临挑战。为此,本研究合成了羟基、氨基与羧基官能团修饰的碳点,并将其用作锂氧气电池电解液添加剂。该碳点在电解液中分散性良好,能够通过氢键作用促进过氧化锂 (Li 2 O 2 ) 的形成; 同时,其自身优异的催化活性可加速 Li 2 O 2 的分解,从而有效提升正极反应动力学。此外,碳点的引入可优化电解液的多个关键性能,包括提高离子电导率、增大锂离子迁移数、保持良好的电子绝缘性,并调控锂离子溶剂化结构,进而抑制锂负极的枝晶生长、减少死锂积累。基于以上作用,引入碳点的锂氧电池在 100 mA g −1 电流密度下,放电比容量达到 5422.2 mAh g −1 ,并实现了长达700小时的稳定循环。本研究证实了功能化碳点作为电解液添加剂对提升锂氧电池性能的显著作用,为解决该体系现存的关键问题提供了新思路。
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高影响因子
Nature Communications
·
2026
·
IF 18.1
Li Lei,Hua Minghao,Li Jiafeng,Guo Yun,Nie Yingjian,Zhang Boya,Hui Xiaobin,Zhang Luyuan,Zhang Zhiwei,Wang Rutao,Wang Chengxiang,Yin Longwei
Despite progress on noble-metal high-entropy alloy catalysts, noble-metal-free high-entropy alloy catalysts continue to face limitations in activity and stability. Atomic defect engineering holds promise for unlocking catalytic potential, yet efficient strategies for designing defects to simultaneously tailor electronic structures and enhance catalytic active sites in noble-metal-free high-entropy alloys remain challenging. Here, we report a general rule to drive twin formation via precisely tuning lattice strain in metallic nanomaterials. By modeling twin formation energy as a descriptor and employing a gradient-radius hetero-atomic doping strategy, we derive a generalized lattice strain-twin formation energy function that determines critical strain for twinning propensity. Guided by this principle, Ce is incorporated into CuCoNiMnMo nanoparticles, promoting coherent five-fold twinning along {111} planes. Twin boundaries generate high-activity sites by disrupting atomic symmetry and reducing coordination numbers, while modulating band width via altered orbital overlap. Meanwhile, strong Ce-O affinity forms an amorphous CeO x passivation layer on twinned noble-metal-free high-entropy alloy, triggering hetero-interfacial electron transfer. These effects synergistically optimize reaction kinetics. Consequently, the engineered catalyst achieves a 405-cycle lifespan in lithium–oxygen batteries and operates across −20 to 80 °C. Our study brings fundamental insights into defect engineering for electrocatalysis in energy conversion fields.
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高影响因子
APPLIED THERMAL ENGINEERING
·
2026
·
IF 7.5
Mingxin Xiao,Xinlei Jia,Xin Kang,Zhijie Gao,Zhimin Hao,Lanjuan Xu,Qing Cao,Junling Wang,Lixin Wei
COF-hosted PAL@ZIF67 enables nanoscale P–Co–N synergistic flame retardancy. • 100 μm coating delays thermal runaway by 90 s with limited cycling impact. • Char and gas analyses support shielding, charring, and gas-phase inhibition. To improve lithium-ion battery safety, a ternary flame-retardant epoxy coating (EP/PAL@ZIF67@COF) was developed for passive thermal protection. The covalent organic framework (COF) serves as a porous host for integrating phytic acid aluminum (PAL) and ZIF67, enabling complementary condensed-phase charring, physical barrier, and gas-phase flame-inhibition effects. The coating was directly applied onto commercial 103,450 pouch cells at thicknesses of 50, 100, and 150 μm. Thermal-runaway suppression showed a non-monotonic dependence on coating thickness. The 100 μm coating extended the failure time from 1042 to 1132 s and substantially reduced combustion severity. In contrast, the 150 μm coating triggered failure at 1022 s, earlier than the uncoated cell, although visible combustion was completely suppressed. Preliminary sequential cycling and rate tests did not indicate catastrophic electrochemical performance degradation after coating. Cone calorimetry, char-residue characterization, and TG–FTIR analyses support the contributions of catalytic charring, high-temperature barrier formation, and gas-phase flame inhibition at the material level. These results demonstrate the potential of ultrathin flame-retardant coatings for cell-level passive protection and highlight the importance of coating-thickness optimization for lithium-ion battery safety. Transient CFD simulations further showed that increasing coating thickness progressively reduced the simulated thermal response, whereas elevated ambient temperature accelerated cell heating.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Da Li,Xin Ai,Ting Sun,Jingrong Li,Yanan Bai,Bin Ma,Jing Ren,Enze Li,Zihe Pan
LDH was in-situ embedded at the sponge skeleton surface. • Embedding LDH at a proper content resulted in smaller pore size, larger porosity, narrow pore size distribution. • The adsorption capacity of LDH epoxy sponge is as large as 8.10 mg/g. • After 15 times cycle adsorption, Li removal rate maintained as 47.87%. • The LDH embedded epoxy sponge showed excellent mechanical robustness and elasticity. Lithium-aluminum layered double hydroxide (Li-Al LDH) powders are still severely restricted in practical Li adsorption due to the unsatisfactory adsorption capacity, severe active component loss and inferior long-term cycling stability. Herein, we propose a novel Li-Al LDH-epoxy lithium adsorption sponge, which is fabricated via an in-situ embedding strategy, where active LDH components are uniformly anchored onto the skeleton surface of the sponge during the pore-forming process. The as-constructed LDH coating on the sponge skeleton presents an ultrathin filmy morphology with a thickness of only several micrometers, which not only well preserves the intrinsic elasticity of the pristine sponge matrix, but also significantly reinforces its mechanical strength. Meanwhile, the resultant hierarchical porous architecture further contributes to the prominent improvement of lithium adsorption performance. The optimized LDH sponge delivers a large specific surface area of 413.26 m 2 /g, a well-defined hierarchical pore system with dual pore sizes of 150 μm and 13.13 nm, and a high lithium adsorption capacity of 7.85 mg/g. More importantly, the composite sponge can stably withstand 50 compression-strain cycles under a high strain of 60% without obvious structural failure. This sponge-supported LDH composite porous system provides a brand-new design paradigm for developing high-performance adsorbents toward practical lithium extraction applications. Download: Download high-res image (115KB) Download: Download full-size image
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高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Junming Han,Chunbo Guo,Fangyu Hao,Zihao Cai,Hao Zheng,Zeyi Jiang,Nien-Chu Lai
A high-purity Li 3 InCl 6 electrolyte is synthesized via a facile room-temperature liquid-phase method. • Nb 5+ doping induces lattice distortion and increases lithium vacancy concentration. • The Nb-Doped electrolyte achieves a high ionic conductivity and excellent electrochemical stability. • The assembled all-solid-state lithium battery delivers superior rate capability and long cycling life. Halide solid electrolytes hold great promise for all-solid-state lithium batteries (ASSLBs), yet achieving fast Li + transport and high electrochemical stability through scalable synthesis remains challenging. Herein, we report a facile wet-chemical route to synthesize Nb-doped Li 3 InCl 6 solid electrolytes, where a stepwise slow drying and thermal treatment protocol is adopted to regulate crystallization kinetics. By optimizing the solvent and dopant concentration, the 10% Nb-substituted sample (LIC Nb 1 ) prepared in ethanol shows optimal performance. Structural refinement and spectroscopic analysis reveal that aliovalent Nb 5+ creates Li vacancies and optimizes local lattice environments, promoting fast Li + conduction. Accordingly, LIC-Nb 1 exhibits a room-temperature ionic conductivity of 0.95 mS cm −1 , more than twice that of pristine LIC(Et) (0.44 mS cm −1 ), with a lower activation energy of 0.31 eV and enhanced electrochemical stability. ASSLBs based on LIC-Nb 1 delivers substantially improved rate capability and cycling stability relative to pristine LIC-based cells. At 30 °C, the LIC-Nb 1 -based cell shows stable charge/discharge behavior over 2–4.4 V (vs. Li/Li + ), affording an initial discharge capacity of 182.4 mAh g −1 , and an initial Coulombic efficiency of 91.02%. Under the more demanding rate and prolonged cycling evaluations conducted at 60 °C, the capacity retention of LIC-Nb 1 -based cell after 30 cycles at 0.1C under 100% depth of discharge reaches 83.5%, compared with 66.8% for the LIC(Et)-based counterpart. This work systematically clarifies the solvent effect on the crystal structure and ionic conductivity of LIC electrolytes, proposes a crystallization kinetics modulation strategy to eliminate structural defects, and validates the practical application potential of Nb-doped LIC electrolytes in high-voltage ASSLBs. These findings highlight the integrated strategy of kinetic regulation and heteroatom doping as an effective strategy for engineering high-performance halide solid electrolytes toward advanced all-solid-state lithium batteries. Download: Download high-res image (226KB) Download: Download full-size image
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Yingying Chen,Wenhui Li,Jiawei Li,Yuanyuan Kong,Dan Hu,Xia Zhan,Xudong Feng,Yakai Lin
An amino-modified NF membrane is fabricated via integrating interfacial polymerization and chemical grafting. • Glycerol serves as a regulator to tailor the polyamide layer microstructure and surface amino group distribution. • Covalent grafting of AMH monomer endows the membrane surface with durable positive charge characteristics. • The membrane delivers a high water permeability of 14.0 L/m 2 ·h·bar and a MgCl 2 rejection rate of 96.21%. • A prominent Li + /Mg 2+ separation selectivity up to 34.27 is acquired under optimized preparation parameters. Polyamide nanofiltration (NF) membranes are generally hindered by the inherent trade-off between permeability and selectivity. To address the above drawbacks, this work constructs a high-performance positively charged NF membrane via a combined strategy of regulated interfacial polycondensation and covalent surface graft functionalization. Glycerol was blended into the aqueous monomer solution to tailor the growth process of polyamide (PA) selective layers; this treatment thinned the separation skin layer to boost water transport efficiency and meanwhile generated abundant hydroxyl reactive sites for subsequent grafting reactions. Under cerium ion-induced free radical polymerization, 2-[(2-methylacryloyl)oxy]ethanaminium (AMH) monomers were covalently immobilized on membrane surface via hydroxyl anchor points, endowing the membrane with persistent positive surface charges. A full set of material characterizations verified the successful grafting of AMH chains. The modified membrane exhibited a flattened surface structure with an average pore diameter of 0.61 nm, and the densified separation layer slightly weakened surface hydrophilicity. Under optimized fabrication parameters, the as-prepared membrane delivered outstanding separation performance: 96.21% MgCl 2 ion retention, a Mg 2+ /Li + separation factor of 34.27, and a water permeance of 14.0 L·m −2 ·h −1 ·bar −1 , which outperforms most NF membranes reported for brine lithium extraction. In addition, the membrane maintained steady separation capacity over a 72-h uninterrupted cross-flow filtration test, proving reliable long-term operational stability. This research provides an innovative fabrication route for high-throughput and high-selectivity NF membranes by coupling diffusion-controlled interfacial polymerization with directional surface functional grafting. Download: Download high-res image (190KB) Download: Download full-size image
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yangyang Wang,Rujie Li,Shanxu Han,Yi Jing,Xinyu Gao,Yajuan Liu,Zhongqi Ren,Zhiyong Zhou
The efficient extraction of lithium from high Na/Li ratio brines remains a critical challenge for sustainable resource utilization. This study develops a trioctyl phosphate (TOP)-dibenzoylmethane (DBM)-kerosene synergistic extraction system guided by density functional theory (DFT) calculations, which reveal complementary electrostatic interactions between the enol oxygen of DBM and the P O group of TOP, facilitating the formation of stable coordination sites for Li + . Under optimized conditions, the system achieves a single-stage lithium extraction efficiency of 97%. Furthermore, an innovative CO 2 -based stripping process eliminates the need for conventional acids by in situ generation of H + via the reaction of CO 2 with H 2 O forms carbonic acid, enabling simultaneous lithium stripping and direct precipitation of Li 2 CO 3 . The integrated process demonstrates high efficiency under ambient conditions, achieving >99% stripping within 4 min and concentrating lithium over 10-fold. The resulting Li 2 CO 3 product exhibits high purity (>99.9%) and well-defined crystallinity, suitable for battery applications. The system maintained excellent stability over ten extraction-washing-stripping cycles with consistent performance. This work offers a green and efficient strategy for lithium recovery from challenging brine sources, combining theoretical molecular design with sustainable process engineering.
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高影响因子
Results in Engineering
·
2026
·
IF 9.4
Wenbin Fan,Lizhi Jiang,Bingqing Yan,Dahuan Liu,Huifang Li
Salt lake brines, key lithium resources, face challenges in efficient lithium extraction due to high Mg/Li ratios. This study investigated six organophosphorus extractants (OPEs) across neutral and acidic types. Using simulated high Mg/Li brines, it first proposed a "dual-site synergistic coordination model" to clarify how OPEs’ molecular structure, acidity, and coordination mode regulate lithium selectivity. Neutral OPEs (TOP>TIBP>TBP) outperformed acidic ones in extraction efficiency/selectivity by forming stable [LiLn]+[FeCl4]- complexes, while acidic OPEs showed poor performance due to Fe³⁺ chelation and H⁺/Mg²⁺ exchange. TOP enhanced Li⁺ selectivity by 20% vs TBP. This work establishes structure-acidity-performance correlations, guiding commercial extractant optimization and addressing high Mg/Li bottlenecks.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Huan Qiu,Shuang Shao,Yonggang Wei,Bo Li,Hua Wang
With the rapid development of the global new energy industry, the strategic importance of lithium is becoming increasingly prominent. Clay-type lithium ore has attracted growing attention as an emerging resource, and its development and utilization are vital for a sustainable supply of lithium. Herein, a combined process involving potassium sulfate (K2SO4) roasting and water leaching was proposed to extract lithium from the clay-type lithium ore. Parameter optimization experiments indicated that the optimal Li extraction reached 93% with a 50% K2SO4 dosage and was roasted at 850 °C for 1 h. Comparative analysis of the raw ore, roasted product, and leached residue confirmed that the lithium extraction mechanism primarily involves ion substitution between Li and K. Additionally, we innovatively introduced briquetting technology to enhance the K2SO4 roasting process, ultimately reducing the K2SO4 dosage from 50% to 30%. This was attributed to the fact that briquetting pretreatment increases the effective contact area between K2SO4 and lithium-bearing minerals, thereby enhancing the solid–solid reaction efficiency. This study confirms that briquetting-enhanced roasting is an effective method for reducing reagent consumption, providing valuable insight for the economic and efficient extraction of lithium from clay-type lithium ore.
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高影响因子
危险品化学品经营许可证（带存储）