JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Xuyong Tian,Dawei Ji,Haowei Feng,Weijia Lin,Chunlei Wang,Liying Wei,Wei Shu,Changfa Xiao
In recent years, with the rapid development of new energy vehicles, the demand for lithium resources has been increasing sharply. Positively charged nanofiltration (NF) membranes can accurately separate magnesium ions (Mg 2+ ) and lithium ions (Li + ), which have become an important technology for extracting lithium resources from salt lakes. The introduction of intermediate layer in thin-film composite (TFC) NF membranes could improve the permeability and selectivity for Mg 2+ /Li + separation. However, there is a problem of poor bonding between the intermediate layer and the supporting membranes through the simple physical combination on the membrane surface. Inspired by the controlled growth of succulent plants, the positively charged PA/ZIF-8/PSF composite NF membranes with “multilayer interlocking” structure were prepared successfully based on ZIF-8 layer anchored constrained growth and further interfacial polymerization. The zinc ion ligands of ZIF-8 were pre-anchored on the PSFsolution to provide reaction sites, and the grown ZIF-8 nanoparticles were embedded in the PSFsupporting membrane surface layer. The embedded ZIF-8 nanoparticles can enhance the interface bonding between the PSFsupporting membranes and the ZIF-8 layer. Additionally, the confined growth method can solve the problems of ZIF-8 particle aggregation and poor dispersion. Compared with membranes without ZIF-8 layer, the prepared PA/M − 6 membrane had a high flux of 47.2 L m −2 h −1 , which was 1.82 times that of PA/M-0. Meanwhile, the Mg 2+ /Li + separation factor of the PA/ZIF-8/PSF composite NF membranes could reach 47.6. In particular, the prepared NF membranes exhibited good long-term stability for Mg 2+ /Li + separation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zhijie Zhang,Yilin Zhou,Xiaodong Zhang,Jixian Ma,Miaoning Yao,Jie Sun,Tong He,Xuexia He,Zhibin Lei,Ruibin Jiang,Zong-huai Liu,Qi Li
Na-rich manganese-based layered oxide cathodes have presented potential applications in high energy–density sodium-ion batteries due to their cost-effectiveness and large theoretical specific capacity. However, the low kinetics of anionic redox reaction and lattice distortion caused by the Mn 3+ Jahn-teller effect greatly hindered the actual capacity, rate, and cycling performances of these cathodes. Herein, a Li + substitution induced O3/O′3 biphasic tailoring strategy has been proposed for constructing the Na-rich NaLi 0.2 Mn 0.8 O 2 (NLMO) cathode. Compared with conventional O′3-Na 1.2 Mn 0.8 O 2 (NMO) cathode, the O3/O′3-NLMO cathode enabled to provide an ultrahigh capacity of 233 mAh g −1 , superior capacity retention of 86 % after 50 cycles, and outstanding rate performance with the recorded-up capacity of 165 mAh g −1 at a high current density of 200 mA g −1 . In addition, NLMO also displayed rapid Na + -diffusion and more structural reversibility of O3/O′3-P3-O1-P3-O3/O′3 during the entire charging and discharging processes. The above excellent performances of NLMO cathode could be attributed to the well-designed O3/O′3 biphasic structure that provides the synergistic function of drastically enhancing reaction kinetics of anionic (O − /O 2– ) couple and efficiently alleviating multiphase transitions caused by Mn 4+ /Mn 3+ cationic couple. This unique finding of Li + substitution induced biphasic structure provides an insight for developing economical and high-performance Na-rich oxide cathodes.
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高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Jingbo Yang,Hongwei Mi,Shan Luo,Yongliang Li,Peixin Zhang,Libo Deng,Lingna Sun,Xiangzhong Ren
Flexible Li-O 2 batteries have attracted worldwide research interests and been considered to be potential alternatives for the next-generation flexible devices. Nitrogen-doped carbon nanofibers (N-CNFs) prepared by electrospinning are used as flexible substrate and an amorphous TiO 2 layer is coated by atomic layer deposition (ALD) and then decorated with Ru nanoparticles . The Ru/N-CNFs@TiO 2 composite is directly used as a free-standing electrode for Li-O 2 batteries and the electrode delivers a high specific capacity, improved round-trip efficiency and good cycling ability. The superior electrochemical performance can be attributed to the amorphous TiO 2 protecting layer and superior catalytic activity of Ru nanoparticles. Based on density functional theory (DFT) calculations from first principles, the carbon electrode after coating with TiO 2 is more stable during discharge/charge process. The analysis of Li 2 O 2 on three different interfaces (Li 2 O 2 /N-CNFs, Li 2 O 2 /TiO 2 , and Li 2 O 2 /Ru) indicates that the electron transport capacity was higher on Ru and TiO 2 compared with N-CNFs, therefore, Li 2 O 2 could be formed and decomposed more easily on the Ru/N-CNFs@TiO 2 cathode. This work paves a way to develop the free-standing cathode materials for the future development of high-performance flexible energy storage systems .
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高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Yaxin Zhang,Long Cheng,Ying-Jie Zhu,Jin Wu,Han-Ping Yu,Sida Xie,Dandan Li,Zhaohui Wang,Heng Li
Poor Li plating reversibility and high thermal runaway risks are key challenges for fast charging lithium-ion batteries with graphite anodes. Herein, a dielectric and fire-resistant separator based on hybrid nanofibers of barium sulfate (BS) and bacterial cellulose (BC) is developed to synchronously enhance the battery’s fast charging and thermal-safety performances. The regulation mechanism of the dielectric BS/BC separator in enhancing the Li + ion transport and Li plating reversibility is revealed. (1) The Max-Wagner polarization electric field of the dielectric BS/BC separator can accelerate the desolvation of solvated Li + ions, enhancing their transport kinetics. (2) Moreover, due to the charge balancing effect, the dielectric BS/BC separator homogenizes the electric field/Li + ion flux at the graphite anode-separator interface, facilitating uniform Li plating and suppressing Li dendrite growth. Consequently, the fast-charge graphite anode with the BS/BC separator shows higher Coulombic efficiency (99.0% vs. 96.9%) and longer cycling lifespan (100 cycles vs. 59 cycles) than that with the polypropylene (PP) separator in the constant-lithiation cycling test at 2 mA cm −2 . The high-loading LiFePO 4 (15.5 mg cm −2 )//graphite (7.5 mg cm −2 ) full cell with the BS/BC separator exhibits excellent fast charging performance, retaining 70% of its capacity after 500 cycles at a high rate of 2C, which is significantly better than that of the cell with the PP separator (retaining only 27% of its capacity after 500 cycles). More importantly, the thermally stable BS/BC separator effectively elevates the critical temperature and reduces the heat release rate during thermal runaway, thereby significantly enhancing the battery’s safety.
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高影响因子
ACS Nano
·
2024
·
IF 15.8
Qingping Wu,Keyi Chen,Zulipiya Shadike,Chilin Li
An environmental-friendly and sustainable carbon-based host is one of the most competitive strategies for achieving high loading and practicality of Li–S batteries. However, the polysulfide conversion reaction kinetics is still limited by the nonuniform or monofunctional catalyst configuration in the carbon host. In this work, we propose a catalysis mode based on “relay-type” co-operation by adjacent dual-metal single atoms for high-rate and durable Li–S batteries. A discarded sericin fabric-derived porous N-doped carbon with a stacked schistose structure is prepared as the high-loading sulfur (84 wt %) host by a facile ionothermal method, which further enables the uniform anchoring of Fe/Co dual-metal single atoms. This multifunctional host enables superior lithiophilic–sulfiphilic and electrocatalytic capabilities contributed by the “relay-type” single-atom modulation effects on different conversion stages of liquid polysulfides and solid Li2S2/Li2S, leading to the suppression of the “shuttle effect”, alleviation of nucleation and decomposition barriers of Li2Sx, and acceleration of polysulfide conversion kinetics. The corresponding Li–S batteries exhibit a high specific capacity of 1399.0 mA h g–1, high-rate performance up to 10 C, and excellent cycling stability over 1000 cycles. They can also endure the high sulfur loading of 8.5 mg cm–2 and the lean electrolyte condition and yield an areal capacity as high as 8.6 mA h cm–2. This work evidentially demonstrates the potential of waste biomass reutilization coupled with the design of a single-atom system for practical Li–S batteries with high energy density.
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Ze-Hang Chen,Lei Xu,Chen Chen,Zong-Bin Lv,Ming-Lai Fu,Baoling Yuan
Spent lithium-ion batteries (LIBs) contain a significant amount of valuable metals, representing a precious secondary resource. Solvent extraction is an effective method for recovering valuable metal ions from these batteries. This study proposes the use of a traditional extractant, Cyanex 272, combined with the ionic liquid Cyphos IL 101, to extract and recover leachate from lithium cobalt oxide (LiCoO 2 ) batteries. With an organic-to-aqueous (O/A) phase ratio of 1:1 and a temperature of 25 °C, 97.12 % of Co was extracted, only 2.37 % of Li were co-extracted. The separation factor of Co and Li ( β Co/Li ) was 1390.1. Stripping was accomplished using pure water, achieving nearly 100 % efficiency, with the extractant demonstrating excellent recyclability and stability. Due to the low viscosity of the organic phase, the extraction system exhibits excellent performance even at room temperature (25 °C), eliminating the need for additional heat input. Using Fourier-transform infrared spectroscopy (FTIR), Ultraviolet-visible spectroscopy (UV-Vis), and Nuclear Magnetic Resonance (NMR), it was confirmed that a tetrahedral Co-Cyanex 272 complex is generated during the cobalt extraction process, following a cation exchange mechanism. Concurrently, Cyphos IL 101 facilitates the extraction of Co 2 + by transferring them as [CoCl 4 ] 2− complexes from the aqueous phase into the organic phase. The novel extraction system reduces raw material costs for recycling spent lithium cobalt oxide batteries. This research highlights the feasibility of solvent extraction methods for processing spent LIBs, offering an efficient approach to recover lithium cobalt oxide batteries.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Yun Yi,Kaixu Yang,Rongfeng Hu,Fei Liu,Chaochuang Yin,Jianxin Cao,Zheng Chen
Enhancing the surface and structural stability has been a research focus of nickel-rich layered cathode materials in lithium-ion batteries (LIBs). This work introduced a dual-functional modification strategy. LZMP is coated on the LiNi0.90Co0.05Mn0.05O2 (NCM90) particle surface to protect the cathode particles from erosion by air and acidic electrolyte, suppressing side reactions between the cathode and H2O, CO2, and HF, and hence enhances the stability of the cathode–electrolyte interphase film. Meanwhile, NCM90 is doped with Zr4+ and Mg2+, which substitute for Ni3+ in the lattice transition metal layer and Li+ in the lithium layer, respectively. Zr4+ forms a stronger Zr–O bond, while Mg2+ performs as a pillar ion, suppressing variations of the lattice parameters and maintaining the layered structure during cycling. The enhanced surface and bulk structural stabilities improve the cycling and rate performances of the cathode material. At 25 °C, 1C, and 2.7–4.3 V, the initial discharge specific capacity and the capacity retention after 200 cycles of 1%LZMP–NCM90 were 180.9 mAh g–1 and 86.0%, respectively, exceeding those of NCM90 (172.7 mAh g–1 and 76.4%). In summary, the LZMP modification synergistically alleviates the surface and bulk structure deterioration, thus preserving the electrochemical performance and improving the structural and cycling stability of NCM90.
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高影响因子
RARE METALS
·
2025
·
IF 11
Zheng Hao-Yuan,Jin Chen,Che Hang,Lee Chia-Tse,Liu Guang,Wang Li,Zhao Yu-Yuan,Liu Hai-Zhen,Wang Xin-Hua,Yu Yi-Feng,Yan Mi
The Li–Mg–N–H (Mg(NH 2 ) 2 –2LiH) system, as a high-capacity Mg-based metal hydrogen storage material (5.6 wt%), has broad prospects for in vehicle hydrogen storage applications, but it still has high hydrogen ab/desorption barriers. To improve its hydrogen storage performance, a nanohydrogen storage alloy was innovatively combined with Mg(NH 2 ) 2 –2LiH, AB5 type nanohydrogen storage alloy LaNi 5 was prepared by co-precipitation method. Nano LaNi 5 and single-walled carbon nanotubes (SWCNTs) were co-doped into the Mg(NH 2 ) 2 –2LiH system at a ratio of 10 wt% and 2 wt%, significantly enhancing the hydrogen storage performance of Mg(NH 2 ) 2 –2LiH. The initial hydrogen ab/desorption temperatures of the co-doped system decreased from 110/130 °C to 45/85 °C. The release of by-product ammonia is significantly inhibited. 4.73 wt% H 2 can be ab/desorption in 150 min at 180/170 °C. Cycle tests show that the co-doped system can still maintain a hydrogen storage capacity of 4.75 wt% after ten hydrogen release cycles. Mechanism and density functional theory study have shown that during the hydrogen release process, partially hydrogenated LaNi 5 weakens the chemical bonding in Mg(NH 2 ) 2 , promoted the dissociation of hydrogen from the Mg(NH 2 ) 2 –2LiH system, while playing a dual role of "hydrogen overflow" and "hydrogen pump". SWCNTs act as auxiliary agents, helping to refine particle size and increase thermal conductivity. The synergistic effect of the two optimizes the comprehensive hydrogen storage performance of Mg(NH 2 ) 2 –2LiH. This study provides a new research method for improving the comprehensive hydrogen storage performance of Mg-based metal hydrogen storage materials using rare earth element catalysts. Graphical abstract
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高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Chen Jia,Yong-Feng Shen,Miao Wang,Wen-cui Li
The cathodic pre-lithiation process, currently considered the most feasible resolution to address the irreversible depletion of Li + in dual carbon-based lithium-ion capacitors (LICs), encounters obstacles in widespread adoption due to its substantial dosage requirement, rising decomposition potential and the damage related to its decomposition residues. Hence, in this study, the successful utilization of Li 2 NiO 2 for LIC pre-lithiation is accomplished, leveraging the synergistic effect between Li 2 NiO 2 and lithium difluoro oxalate borate (LiDFOB). It's noteworthy that the full capacitor, entirely composed of commercial materials (activated carbon/hard carbon) and supplemented with 20 wt% LNO +2 wt% LiDFOB, exhibits remarkable energy densities of 98.53 Wh kg −1 at a power density of 31 W kg −1 and 19 Wh kg −1 at a power density of 4.65 kW kg −1 . Moreover, the full capacitor displays commendable performance, demonstrating superior capacitive behavior and excellent high-current cycling proficiency. Besides, electrochemical evaluations and structural analyses unveil that LiDFOB, via solid electrolyte interface (SEI) modification, enhances the utilization of Li + sourced from Li 2 NiO 2 thus avoiding the abuse of pre-lithiation reagents, while the LNO decomposition products contribute substantially to additional capacitance. The synergistic effect of pre-lithiation reagent and SEI modification underpin the outstanding performance witnessed in the full capacitor.
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高影响因子
Energy & Environmental Materials
·
2021
·Vol. 6
·期 2
·e12336
·
IF 15.122
Yaqing Wei,Jun He,Jie Zhang,Mingyang Ou,Yanpeng Guo,Jiajun Chen,Cheng Zeng,Jia Xu,Jiantao Han,Tianyou Zhai,Huiqiao Li
Among the alloying-type anodes, elemental Sb possesses the suitable yet safe plateau, simple lithiation pathway, small voltage polarization, high conductivity, and superior cycle stability. However, challenge is that its intrinsic capacity is rather low (660 mAh g −1 ), <1/6 of silicon. Herein, we propose a seamless integration strategy by merging the voltage and capacity of phosphorus and antimony into a solid solution alloy. Interestingly, the enlistment of P is found greatly enlarge the capacity from 660 to 993 mAh g −1 for such Sb 30 P 30 solid solution, while maintaining a single and stable discharge plateau (~0.79 V) similar to elemental Sb. Various experimental characterizations including XPS, PDF, Raman, and EDS mapping reveal that in such a material the P and Sb atoms have interacted with each other to form a homogenous solid solution alloy, rather than a simple mixing of the two substances. Thus, the Sb 30 P 30 exhibits superior rate performances (807 mAh g −1 at 5000 mA g −1 ) and cyclability (821 mAh g −1 remained after 300 cycles). Furthermore, such Sb 60-x P x alloys can even deliver 621 mAh g −1 at −30°C, which can be served as the alternative anode materials for high-energy and low-temperature batteries. This unique seamless integration strategy based on solid solution chemistry can be easily leveraged to manipulate the capacity of other electrode materials at similar voltage.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Kaiquan He,Hong Tan,Shizhen Li,Pu Hu,Chaoqun Shang
The Li-S batteries possessing high theoretical energy density are promising for next-generation energy storage. However, the shuttle effect and slow conversion of lithium polysulfides seriously hinder the practical application. In this contribution, introducing metallic Cu to modify dual-phase TiO 2 (rutile/anatase) grown on N-doped carbon nanosheets (denoted as Cu/mTiO 2 -NC) can act as a buffer layer to confine the active S species in the cathode region effectively. The corresponding systematic experiments show that the Cu/mTiO 2 -NC provides sufficient surface affinity to adsorb and capture polysulfides and has a highly conductive C/N skeleton to achieve rapid electron migration. Moreover, the metallic Cu can react with polysulfides to further immobilize polysulfides. Thus, the Li-S batteries, with the aid of optimal Cu/mTiO 2 -NC, exhibit a desirable discharge capacity of 811 mA h g –1 after 100 cycles at 0.2 C, which is 50 % higher than that without Cu/mTiO 2 -NC. Moreover, the optimum Li-S batteries deliver a discharge capacity of 435.45 mA h g –1 after 600 cycles at 0.5 C, corresponding to attenuation per cycle of only 0.09 %.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Haoze Li,Hao Liu,Honggeng Ding,Chenshuo Fu,Ling Gao,Zhe Li,Haijing Liu,Yi Zhang,Abdul Jabbar Khan,Guowei Zhao
Li-containing argyrodites, particularly Li 5.5 PS 4.5 Cl 1.5 , are key ceramic solid electrolytes with high ionic conductivity (∼10 mS cm –1 at room temperature), making them promising candidates for all-solid-state lithium batteries (ASSBs). However, their poor air and electrochemical stability limit their application as electrolytes for ASSBs. This study attempts to address these issues by Ge 4+ substitution involving the forming of Li 5.5+ x (P 1− x Ge x )S 4.5 Cl 1.5 solid solutions (0 ≤ x ≤ 0.10). The optimized composition, Li 5.56 (P 0.9 Ge 0.1 )S 4.5 Cl 1.5 , exhibits improved air and electrochemical stability and a higher ionic conductivity of 13.2 mS cm –1 . When used in a lab-scale ASSB, this electrolyte achieved an initial discharge capacity of 106.4 mAh g –1 , retaining 89.3 mAh g –1 after 100 cycles with 98.9 % cycling efficiency. This work provides insights into the improving air and electrochemical stability of Li 5.5 PS 4.5 Cl 1.5 solid electrolytes for ASSBs.
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高影响因子
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