JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Weiwei Wang,Xueying Jia,Yuhao Zhang,Bing Qin,Ying Wang,Chenyu Yang,Qinghua Liu
Li 5 FeO 4 (LFO), an ideal cathode prelithiation additive for lithium-ion batteries, has attracted significant interest because of its extremely high capacity, suitable voltage window, and environmental friendliness. However, the solid-phase synthesis process of LFO is not clear and suffers from the exorbitant cost of Li 2 O, making finding an alternative lithium source for improving cost-effectiveness in industrial production crucial. In this study, LFO materials were synthesized via a solid-phase sintering method involving two types of lithium sources. Utilizing in-situ X-ray diffraction and X-ray absorption fine structure spectroscopy, the evolution mechanism of solid-phase synthesis was elucidated. In particular, a low-temperature plateau was determined for the synthesis process employing LiOH as the lithium source. Compared with Li 2 O-derived O-LFO, the as-obtained prelithiation additive H-LFO achieved an ∼69.7% cost reduction with satisfactory initial charge capacity, energy density and cycling stability in industrial-scale applications. This work provides a practical solution for promoting prelithiation technology and reducing the preparation cost of prelithiation additives.
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Small Structures
·
2026
·Vol. 7
·期 1
·e202500707
·
IF 11.3
Peixi Liu,Fei Chang
Alkali/alkaline earth metal promoters play a crucial role in optimizing catalysts for the selective hydrogenation of acetylene. This study innovatively explores the effects of different forms of lithium (Li) promoters on enhancing ethylene selectivity and successfully develops a Li 2 NH-modified Ni/MgO catalyst synthesized via liquid-ammonia impregnation method. The catalyst exhibits significantly enhanced activity and selectivity in the semihydrogenation of acetylene, outperforming the unmodified Ni/MgO catalyst and other lithium compound-modified catalysts. Comprehensive characterization not only reveals that Li 2 NH enhances Ni dispersion and facilitates H 2 activation/dissociation, but also uncovers its dual-promoting mechanism: it finely tunes adsorption strengths through the electronic modulation while utilizing its unique hydrogen storage capability to enable controlled hydrogen supply. This synergistic mechanism is unequivocally identified as the core reason for the selectivity enhancement. This work proposes a novel strategy for designing efficient Ni-based catalysts through modification with functional alkali metal imides (e.g., Li 2 NH). The revealed structure–activity relationship and controllable hydrogen supply mechanism provide important scientific foundations for developing high-performance catalysts for selective alkyne hydrogenation, with broad implications for alkyne removal processes.
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Journal of Energy Storage
·
2026
·
IF 10.7
Siman Yang,Zongnan Li,Yao Huang,Mingwei Hu,Ting Yang,Qiaohua Wei,Longyuan Guo,Mingdeng Wei
In recent years, the recycling of spent lithium iron phosphate (LFP) batteries has garnered significant attention as an important strategy to alleviate resource scarcity and advance resource circularity. Among different recycling technologies for spent LFP batteries, emerging direct regeneration technology represents a sustainable recycling approach capable of restoring LFP cathode materials without compromising their olivine crystal structure. In our study, we proposed an environmentally friendly and efficient one-step hydrothermal regeneration strategy to achieve synergistic structural and functional restoration of spent LFP in the presence of lithium supplement. Lithium hydroxide (LiOH) serves as the lithium precursor, with the natural amino acid l -serine (C 3 H 7 NO 3 ) used as a green reducing agent. The primary alcohol group of l -serine can provide a reducing environment, enabling the reduction of Fe 3+ ions and alleviating the Li-Fe inversion defect. Concurrently, nitrogen atoms from the amino group of l -serine were incorporated into the carbon coating, enhancing the electrochemical performance of the material. Consequently, the regenerated LFP exhibited exceptional electrochemical property and outstanding cycling stability. The specific discharge capacity reached 140.6 mAh g −1 at 1C rate, demonstrating 86.13% capacity retention over 1000 cycles. Crucially, the material maintains a capacity retention of 84.44% over 1000 cycles even at a high rate of 5C. Such a strategy can effectively regenerate LFP cathode with a restored superior electrochemical property, offering a viable pathway for scalable recycling of spent LFP in the future.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Pengbing He,Qionghua Xie,Jinyu Wang,Guocheng Yao,Liangshi Wang
Efficient separation of lithium isotopes is crucial for nuclear energy, isotope geochemistry, and advanced energy storage. This study developed an electromigration system that uses organic solvents as the separation medium. The system investigated the effects of solvent type, lithium salt species, and migration path length. The EMC-based system demonstrated superior isotopic selectivity, achieving a separation factor exceeding the industrial benchmark of 1.050 under conditions of 16 V, 0.1 mol∙L −1 LiTFSI anolyte, a 10 cm path length, and 3 h of operation. In contrast, the DMA-based system exhibited significantly higher Li + flux due to weaker coordination, albeit with lower isotope selectivity. Molecular dynamics simulations revealed distinct solvation behaviors. EMC formed dense LiTFSI clusters that enhanced isotope selectivity but impeded ion transport, whereas DMA formed looser complexes that facilitated faster ion migration. Radial distribution functions and coordination numbers confirmed stronger Li + interactions with EMC compared to DMA. These findings establish a mechanistic understanding of the trade-off between isotopic separation efficiency and ion flux, providing both theoretical and experimental guidance for designing high-performance lithium isotope separation systems.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Zeqi Nie,Yanli Zhao,Yapeng Zhang,Mengqi Tian,Yizhou Li,Huigao Duan,Guanhua Zhang
The rapid advancement of flexible and integrated smart electronic devices creates an urgent demand for flexible, transparent, and stretchable multifunctional energy storage devices. However, the development of multifunctional integrated energy storage devices faces significant challenges, including insufficient electrode deformation tolerance during repeated stretching and the detachment of active electrode materials, leading to degraded electrochemical performance and reduced transparency. Here, we report a self-supporting serpentine nickel micromesh (SNM) with high transparency ( T = 90.5%) and excellent mechanical stretchability, exhibiting only a 16% increase in sheet resistance after 200 cycles at a 50% elongation. Based on the transparent and stretchable SNM, we further fabricate self-supporting, transparent, and stretchable SNM@NiCoP cathodes and SNM@Zn anodes by electrodepositing NiCoP nanospheres and Zn nanosheets, respectively. The electrochemical deposition technique firmly integrates the stretchable conductive SNM with highly reactive materials, ensuring stability under deformation. The assembled transparent and stretchable alkaline zinc-ion batteries (TSA-ZIBs) deliver a specific capacity of 5.7 μAh cm −2 at a current density of 0.6 mA cm −2 . The TSA-ZIBs achieved an optical transmittance of 54%, with a capacity retention rate of 69.6% after 150 cycles at a 20% elongation, demonstrating excellent mechanical stretchability and electrochemical performance. This work proposes a self-supporting, highly transparent, and stretchable electrode, offering new insights for the development of multifunctional integrated energy storage devices.
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Journal of Environmental Chemical Engineering
·
2026
·
IF 7.2
Na Wang,Jieyu Zhao,Hankun Zhang,Tianlei Wang,Jixue Shen,Qian Kang,Longfeng Tao,Xi Yue,Chuncheng Yang,Hongchao Li,Changjiang Liu
The growing demand for lithium batteries promotes the generation of a large amount of spodumene leached residue (SLR) in the lithium extraction industry, which leads to potential environmental challenges. To seek a proper treatment strategy for SLR, its ion-exchange behaviors were investigated systematically in solutions containing Li + , Na + , K + , Ca 2+ , and Mg 2+ . The results indicated that the SLR exhibited a pronounced positive selective response toward Li + , resulting in a Li 2 O content of 0.74%-1.86% after ion-exchange in the mixed-cation system. Moreover, a proper adjustment of solution alkalinity can further enhance H + /Li + ion-exchange, significantly improving the exchange efficiency to a maximum Li 2 O content of 8.44%. Repeated experiments as well as industrial SLR indicated good re-utilization potential. The present work provides a novel pathway for the resource utilization of SLR and offers a feasible new approach for lithium recovery from complex ion systems.
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ACS Applied Materials & Interfaces
·
2026
·
IF 8.2
Zhenhao Luo,Jintao Li,Yue Mu,Songtong Zhang,Xuefang Chen,Jing Wang,Xiayu Zhu,Wenjie Meng,Jingyi Qiu,Hai Ming
Implementing Ni-enriched (Ni ≥ 60%) layered cathodes in high-energy lithium-ion battery (LIB) presents a host of hurdles, including issues with maintaining structural integrity, the volatile nature of the reactive Ni4+ ions, and the risk of thermal breakdown. Herein, we propose a two-step strategy for Nb modification, which enables gradient Nb doping in Li[Ni0.6Co0.2Mn0.2]O2 (NCM622). In which, the low concentration of Nb doping within the NCM622 particles increases the interplanar spacing, facilitating lithium-ion diffusion and enhances crystallographic stability by preventing excessive Nb doping from interfering with lithium-ion sites, thereby delivering a progressively higher specific capacity and effectively mitigates the degradation of the Ni-enriched layered cathode; Nb densely decorates primary-particle grain boundaries and secondary-particle surfaces, which not only effectively suppresses electrolyte decomposition and side reactions, but also enhances electronic conductivity, which is attributed to the nature of fast ionic conductors refer to Nb-based compounds. Additionally, Nb incorporation elongates and radially aligns primary particles, forming a framework that effectively dissipates sudden internal strain during phase transformations, while ion deintercalation preferentially proceeds along these extended edges. The Nb–NCM622 cathode retains 86% of its initial capacity after 300 cycles at 5C (1C = 180 mA g–1), significantly surpassing that of the pristine counterpart (68.34%). Moreover, to design a battery with high specific power and energy, Nb-modified NCM622 is cooperated with 8% graphene to form capacitor-LIB hybrid electrode. A 7 Ah pouch full-cell pairing the hybrid cathode with hard carbon retains ≈90% capacity after 7000 cycles at 70 A. This simple tactic extends lifespan, permits rapid charging, and meets safety benchmarks─while preserving capacity for next-gen electric vehicles.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Feifei Liu,Ying Xie,Yuansheng Shan,Jiahui Zhao,Shuo Xue,Wei Zhang,Yan Qin,Tao Liu,Zhenyu Chu,Xiaojun Chen
Sepsis, a life-threatening condition, remains a leading cause of global mortality. It is frequently accompanied by systemic inflammatory response syndrome (SIRS), which triggers excessive release of inflammatory factors and may lead to a cytokine storm. The sensitive detection of procalcitonin (PCT) is therefore critical for early prediction and clinical management of sepsis. In this work, an electrochemical immunosensor was developed based on polyaniline-encapsulated NiCo alloy (NiCo@PANI) nanoflowers for the ultrasensitive detection of PCT. The NiCo alloy ensures rapid electron transfer, and the in-situ polymerization of PANI on the surface of NiCo nanoflowers not only enhances their antioxidant stability but also offers an efficient matrix for antibody immobilization. During the detection process, the specific binding of PCT to the antibody on the electrode surface increases the electron transfer resistance and the steric resistance, resulting in a decrease in current value. By fitting the linear relationship between the attenuated signal and the PCT concentration, the quantitative identification of PCT can be achieved. The fabricated immunosensor achieves ultrasensitive detection of PCT within 20 min, exhibiting a broad linear range from 0.1 pg/mL to 100 ng/mL and a detection limit as low as 0.015 pg/mL. Moreover, it exhibited high selectivity, excellent stability, and satisfactory reproducibility, along with accurate PCT detection in real human serum samples. This work provides a promising platform for ultrasensitive PCT monitoring, with potential applications in early disease diagnosis and point-of-care health assessment.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Bei Zhang,Xin-Xin Chen,Xin-Ping Wang,Xiao-Rui Ge,Jia-Ying Chen,Si-Min Zheng,Guan-Hui Liu,Jie Tu,Dong-Yang Zhang,Xiao-Hui Yao,Wei-Guo Zhao
BC synergistic anti-dialysis strategy was used to prepare anti-swelling hydrogels. • The BP-RD hydrogel exhibits high water content and excellent mechanical properties. • The dense network structure endows the potential for underwater applications. • This method can be used to prepare biomimetic double-layer hydrogels. Hydrogels, a typical solid–liquid hybrid material, have shown great potential in wearable electronics, tissue engineering, and other fields; however, their underwater applications have long been limited by the ‘swelling–weakening ‘effect. To address this challenge, this study proposes a ‘bacterial cellulose (BC) synergistic reverse -dialysis-induced confined dense network ‘strategy to construct a BP-RD hydrogel with high water content and excellent mechanical–functional properties through a one-step approach. The design innovatively uses the reverse dialysis process to drive dual dynamic assembly. First, polyethylene glycol-mediated water extraction compresses the BC network to form a rigid confined space. Then, polyvinyl alcohol molecules move and crystallize in the BC framework, creating a dense interpenetrating network. At 75% moisture content, the material achieved 22 MPa fracture strength, 145 MJ m −3 toughness, and 1.58 S m −1 conductivity owing to the confinement effect. Additionally, it showed outstanding antiswelling characteristics (the tensile strength increased by 14% after 7 days). This method can also be applied to combine existing hydrogels in one step, creating a double-layer hydrogel structure with improved mechanical properties and swelling performance. This approach solves the key problems of the failure of traditional hydrogels to expand, the cumbersome preparation process, and the difficulty in meeting the performance requirements of multiple scenarios.
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高影响因子
BIOMACROMOLECULES
·
2026
·Vol. 27
·期 8
·5276-5286
·
IF 5.9
Wang Xiaolong,Zhou Shikai,Lv Xuedong,Wang Jing,Zheng Liuchun
Plastic
waste, particularly BPA-polycarbonate (BPA-PC),
poses environmental
and health concerns owing to its nondegradability and limited recyclability.
Herein, we first reported a recyclable polycarbonate based on structurally
rigid and acid-sensitive spirocyclic acetal units, which exhibited
excellent mechanical properties and transparency. The use of biosourced
vanillin as a multifunctional building block achieved a circular life
cycle for the chemical materials. The copolycarbonates exhibited a
high glass transition temperature (≥143 ° C) and tensile
strength (≥57 MPa), comparable to those of BPA-PC. Under mild
acidic conditions (pH ≈ 6), the acetal linkages were selectively
cleaved while carbonate groups remained intact, yielding telechelic
polymers with aldehyde termini. These degradation products were efficiently
reconverted to the original copolycarbonates, closing the loop for
chemical recycling. This strategy offered a sustainable pathway toward
a circular polycarbonate economy.
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ACS Applied Engineering Materials
·
2026
·
IF 3.5
Hao Zhang,Anming She,Junxi Zhang,Zhenxiao Bi,Qing Chen,Hehua Zhu
Cement-based structural batteries offer an attractive pathway for integrating energy storage technologies into civil infrastructure. However, their practical application is severely constrained by capacity degradation caused by the dissolution of trivalent manganese (MnOOH) under alkaline conditions. This study proposes a zeolite-coated cathode strategy to suppress manganese dissolution, thereby achieving highly durable MnO2/Zn cement-based batteries. The zeolite porous framework complex traps free trivalent manganese ions [Mn(OH)6]3– and promotes uniform migration of OH– within the poly(vinyl alcohol)-cement matrix. The optimized MnO2 material enhances electrolyte wetting and reduces interfacial charge transfer resistance. The zeolite-induced effect enables the MnO2 electrode to exhibit highly reversible conversion reactions and stable morphological evolution during cycling. The assembled structural battery achieves high Coulombic efficiency and cycling stability, retaining 56.21% capacity after 300 cycles in the freshly prepared system and 77.09% capacity after 300 cycles following 28 days of cement curing. This study establishes a universal interfacial stabilization strategy through zeolite coating, opening promising avenues for developing energy-storage building materials suitable for long-life infrastructure.
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Small
·
2026
·
IF 11.8
Quan Liu,Bing Liu,Kang Wang,Yuan Yuan,Yuxin Xia,Xin Liang,Huakun Liu,Shixue Dou,Xiang Li,Huaxia Deng,Xinglong Gong
The application of shear thickening electrolytes (STEs) in batteries is hindered by the conventional trade-off, in which enhanced impact resistance comes at the cost of reduced ionic conductivity. Here, we overcome this barrier by introducing lithium sulfonate-functionalized mesoporous silica (M-SiO 2 -SO 3 Li) as a multifunctional filler. Unlike conventional fillers that impede ion transport, M-SiO 2 -SO 3 Li simultaneously induces shear thickening and enhances conductivity. At 15 wt.% loading, the electrolyte achieves a remarkable ionic conductivity of 10.73 mS cm −1 , higher than that of filler-free traditional electrolytes (TE), by anchoring anions via the -SO 3 Li groups to increase the Li + transference number. This synergy enables exceptional battery performance: Li||LFP cells demonstrate 97.0% capacity retention after 500 cycles, and LFP||Gr pouch full cells maintain 83.8% capacity after 200 cycles at 0.5 C. In impact tests, the robustness of this design is evident as the M-SiO 2 -SO 3 Li-based pouch cell withstands hammer drops that cause immediate failure in standard TE cells. Thus, this design strategy overcomes the performance trade-off, integrating high conductivity, long cycling life, and impact resistance, and provides a pathway for application across the liquid-based electrolyte family.
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