NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.6
Xingbo Qi,Lei Ni,Ziyan He,Xu Sun,Hejie Lu,Haiqiang Li,Ruixi Meng,Maosen Fu,Xiao Ma
Cobalt-free, nickel-rich layered oxide cathode material LiNixMn1-xO2 (NM) has attracted much attention due to its high specific capacity and low cost. However, cobalt-free cathode materials have more serious problems such as Li/Ni disorder and structural degradation compared to ternary LiNixCOyMn1-x-yO2 (x ≥0.5, NCM) cathodes. To address these challenges, LiNi0.6Mn0.4O2 (NM64) and a series of Mo-doped Li(Ni0.6Mn0.4)(1-x)MoxO2 (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05) cathode materials were designed and prepared by high-temperature solid-phase method, and the effect of Mo doping on the structure and electrochemical performance of NM64 cathodes was systematically investigated. Mo doping not only suppresses Li/Ni mixing and enlarges interlayer spacing but also effectively inhibits primary particle overgrowth, resulting in refined particle morphology that enhances structural stability and Li+ transport kinetics. Consequently, the Mo-doped NMM cathodes exhibit more stable interface with significantly suppressed side reactions. Li(Ni0.6Mn0.4)0.98Mo0.02O2 cathode exhibited superior capacity retention of 86.83% after 100 cycles at 1.0 C (at 25℃ and 2.8-4.3 V), surpassing the NM matrix by 8.98% and demonstrating the remarkable cycling stability improvement. This work elucidates the structural and interfacial stabilization mechanisms induced by high-valent Mo doping, providing an effective approach to developing high-performance Co-free layered oxide cathodes.
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高影响因子
ELECTROCHIMICA ACTA
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2026
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IF 5.8
Linxian Yu,Shoudong Xu,Hongliang Li,Chenyang Gao,Yu Zhao,Zhanyi Li,Yong Cao,Yanhua Cui
Molten salt electrolyte thermal batteries are widely employed in military applications, particularly as power sources for guided missiles. The novel LiCl-LiF-Li 2 SO 4 electrolyte, with its wide electrochemical window, enables high-energy-density electrochemical systems when paired with high-voltage cathodes. However, severe negative reactions occur between this electrolyte and Li-B anodes, forming a reactant layer that degrades the discharge performance. In this study, a dense LiAl alloy layer that enables simultaneous ion and electron transport was in situ formed on the Li-B anode via cold pressing to suppress the negative interfacial reactions, thereby mitigating the deterioration of discharge performance. Discharge tests reveal that with a current density of 100 mA cm −2 , the modified Li-B-10Al anode (10-μm-Al-modified Li-B) achieves a specific discharge capacity of 2356.9 ± 18.4 mAh g −1 in a single cell, far exceeding the 1131.1 ± 25.6 mAh g −1 for the unmodified Li-B anode. Moreover, when paired with a high-voltage NiF 2 cathode, the cell using Li-B-10Al anode delivers a higher specific capacity (374.8 ± 5.4 vs . 231.9 ± 4.9 mAh g −1 ) and lower polarization compared to the cell with a Li-B anode. This study provides an innovative strategy to address interfacial issues in molten salt electrolyte/Li-B anode and opens a new route toward next-generation high-performance thermal batteries.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Lifan Wang,Yiheng Wu,Qinling Shi,Siheng Niu,Min Chen,Xindong Wang,Zhengping Zuo,Chun Zhan,Guicheng Liu
A surficial oxygen-regulation strategy is developed for Li-rich cathodes. • A high-entropy perovskite buffer layer stabilizes anionic redox chemistry. • The perovskite layer suppresses irreversible oxygen release. • It mitigates transition metal migration via stable oxygen vacancies. • Modified cathode shows 87% capacity retention after 150 cycles at 0.5C. Li-rich Mn-based layered oxides, of much interest due to ultrahigh specific capacity (over 300 mAh g −1 ) and low cost, have become a promising cathode of Li-ion batteries to fulfil the long-mileage demand of electric vehicles. However, they are still haunted by a critical challenge of severe oxygen release and irreversible phase transition, which consequently results in rapid voltage fade and even triggering the parasitic thermal runaway. Coating on the surface of cathode particles could partially alleviate these issues, while generally falls short in handling oxygen activity and the chemo-physical mobility of the highly reactive oxygen species. Herein, we report a direct regulation strategy of anionic redox chemistry by constructing a high-entropy perovskite buffer layer (Li 0.37 Sr 0.05 La 0.567 ZrO 2.875 F 0.125 ), which was introduced to the surface of Li-rich cathodes to restrain the release of activated surficial lattice oxygen ions by its stable oxygen vacancies and effectively improves the safety performance. Moreover, our results also demonstrates that the cycle life of modified cathodes is prolonged and the voltage fade is slowed compared to the pristine sample. This work demonstrates that stabilizing the highly active surficial oxygenates provides new design principle for high-safe and long-term cycling lithium-ion batteries.
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ACS Sustainable Chemistry & Engineering
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2026
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IF 7.6
Xi Zhang,Sheng Cao,Bing Wu,Haonan Zheng,Xianjun Zhu,Kunxiang Liu,Zhaoyu Zhai,Zhikai Zhou,Shuangying Wei,Zdeněk Sofer,Jing Xia,Yanqing Fu,Qiliang Wei,Weiyou Yang,Zhao Liang,Ruizhi Yu
Li-rich Mn-based layered oxides (LRMOs) rely on lattice oxygen redox to achieve high energy density, but their high-temperature performance is limited by thermally accelerated oxygen loss and interfacial degradation. Here, it is verified that trace-level entropy-mediated doping (Mg, Cu, Ti, and La) exerts a dual role in LRMOs. At low doping levels, it stabilizes the bulk layered framework and interfacial chemistry via synergistic lattice regulation and transition-metal–oxygen (TM–O) covalency tuning. However, excessive doping suppresses lattice-oxygen redox activity and exacerbates electrochemical polarization, ultimately compromising reversible capacity and reaction kinetics. At an optimal dopant level of 0.25 at. % relative to total transition-metal content, the entropy-mediated doping suppresses Li/Ni disorder, expands lattice spacing, and enhances structural durability without sacrificing oxygen-redox reversibility. Consequently, Li1.2Mn0.5985Ni0.1995Mg0.0005Cu0.0005Ti0.0005La0.0005O2 delivers a high discharge capacity of 274.99 mAh g–1 at 0.1 C and sustains 227.18 mAh g–1 at 1 C. More importantly, it achieves 84.57% capacity retention after 100 cycles at 55 °C, substantially surpassing the unmodified LRMOs (58.10%). This work establishes trace-level entropy-mediated regulation of TM–O chemistry as a practical strategy for thermally robust, high-energy oxygen-redox cathodes.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Hao Feng,Zipeng Sun,Yaoxin Li,Chengwei Ma,Jiangqi Zhou
Lithium metal batteries are the most promising representative for achieving high-energy-density battery systems. However, interface instability and lithium dendrite growth are important challenges facing large-scale applications. Polymer solid electrolytes have both the rigidity to suppress lithium dendrite growth and the toughness to accommodate interface fluctuations, making them a necessary path for the development of solid-state lithium metal batteries. Solid-state lithium metal batteries still have poor solid contact interfaces, which are affected by multiple effects of interface mechanics and electrochemistry. In this work, polyurethane with excellent mechanical properties was used as the substrate, and the cross-linking reaction of SiO2 aerogel was used to bridge polyurethane and polymethacrylate polymers, to investigate the influence mechanism of the mechanical-electrochemical characteristics of the interface of a solid electrolyte film on the Li+ interface dynamics. Through the synergistic effect of the fluorinated polar groups and silicon oxygen skeleton in the solid electrolyte film, the synergistic effects of increasing Young’s modulus, enhancing mechanical stiffness, and improving electrochemical stability and interface compatibility have been achieved, thus establishing the mechanism of the mechanical-electrochemical coupling characteristics of the solid electrolyte film on interface dynamics, providing a perspective for the practical application of polymer solid-state batteries.
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2026
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IF 7.8
Yingli Zhang,Hailong Zhu,Huaiyang Zuo,Yaqi Hou,Shumin Zheng,Shiming Yang,Jing Wang,Bao Wang
As a potential high-safety and high-energy-density technology, lithium sulfide has been extensively studied as a cathode material for lithium–sulfur batteries under room temperature conditions. However, limited by its intrinsic characteristics of low electronic conductivity and high activation energy barrier, conventional Li2S cathodes struggle to overcome the activation energy barrier at low temperatures, resulting in scarce research on their application below zero. Specifically, studies on operation at −20 °C are nearly nonexistent. Herein, a synergistic strategy combining molybdenum carbide support adsorption and cobalt metal catalysis is proposed for low-temperature performance investigation. Via a lithiation reaction, Li2S@MoC–Co nanocomposites are fabricated by in situ synthesizing Li2S nanoparticles, introducing MoC as the support, and incorporating Co metal. When assembled into batteries with Li2S@MoC–Co as the cathode and metallic lithium as the anode, the activation energy barrier is reduced to 2.41 V at room temperature, exhibiting excellent electrochemical performance. A high initial discharge capacity of 1100 mAh g–1 is achieved at 0.1 C, and a discharge capacity of 430 mAh g–1 is retained after 200 cycles at 0.5 C. Even at −20 °C, Li2S is almost fully activated during the first charging cycle, delivering a discharge capacity of 360 mAh g–1 at 0.05 C. Moreover, a capacity retention rate of 92% is maintained after 300 cycles at 0.5 C. This work realizes high output and high-capacity retention of Li2S at −20 °C, providing a new paradigm for the development of low-temperature Li2S-based batteries.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
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2026
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IF 7.8
Caiyue Sun,Kanghou Ma,Yitao He,Ge Zhang,Guanghua Liu,Chen Wang,Fangshuo Zhou,Zhiguo Liu,Ningning Wu,Yaohui Zhang
Artificial protection layers (APLs) are an effective strategy to protect lithium metal anodes. Current research primarily focuses on applying APLs to the electrode surface where lithium deposition occurs. However, limited attention has been given to how adding APLs to the counter electrode surface impacts the performance of lithium metal batteries. In this study, we combine experimental and simulation approaches to investigate the effects of applying APLs either solely on the lithium deposition side or on both electrodes of the battery. Experimental results show that Li-LFP batteries cycled at 2 C without APLs exhibited a capacity retention below 80% after 245 cycles. When APLs were applied only to the lithium deposition side, the batteries could cycle for 464 cycles. Remarkably, when APLs were applied to both electrodes, the Li-LFP batteries retained over 80% capacity retention even after 800 cycles. These findings indicate that applying APLs to both the lithium deposition side and the counter electrode significantly enhances the electrochemical performance of the battery. This study breaks the current paradigm of focusing solely on the lithium metal electrode surface, providing valuable insights for the development of safer and higher-performance lithium metal anode battery systems in the future.
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DOI
PubMed
高影响因子
DESALINATION
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2025
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IF 9.8
Jianning Liu,Jialu Chen,Zirui Wang,Shanxia Luo,Fengfeng Gao,Xiao Du,Wenbiao Ma,Xiaogang Hao
Efficient recovery of residual lithium from lithium precipitation brine has always been a major challenge. A stable and efficient lithium extraction system and a driven mode need to be constructed. This study presents an innovative coupled electrochemical system combining a chlorine-doped polypyrrole (PPy−Cl) electrode with the LiMn 2 O 4 electrode. In this system, the LiMn 2 O 4 film electrode and chlorine-doped polypyrrole were synchronized to remove lithium and chlorine ions, and complete de-intercalation of LiMn 2 O 4 could be achieved at the cell voltage of 1.1 V, which greatly reduces energy consumption. No manganese ions were detected in the solution compared to the 1.43 % manganese dissolution loss after 10 tests on the graphite plate (GP) used as an auxiliary electrode. In addition, self-electrical-energy recuperation can be achieved by utilizing the low potential difference between Li 1-x Mn 2 O 4 and polypyrrole. The performances of the self-driven(SD) mode and the constant-current(CC) mode were compared to achieve externally controlled energy release. The intercalation capacity reached 33.82 mg g −1 at 0.4 mA cm −2 , and the intercalation efficiency was maintained at 88.12 % after 10 tests. During the first discharge, the discharge efficiency of the SD mode was only 54.08 % of the CC mode. Furthermore, the system exhibited high selectivity (51.3) in the lithium-precipitated brine with a high concentration of Na + and Li + (Na + /Li + = 8.47). These results indicate that the proposed strategy has significant potential in Li + resource recovery and can be used in a variety of Li + resource recovery applications.
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Polymer Chemistry
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2026
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IF 3.9
Linyuan Cui,Xinkai Zou,Chengliang Wang,Huiyu Zhao,Hairui Chen,Qiming Xu,Xuehong Sun,Jingjiang Sun,Qingfu Wang
Conventional flammable liquid electrolytes compromise the safety of lithium metal batteries. We address this via the molecular design and in-situ catalyst-free ring-opening polymerization of a trifluoromethyl-functionalized polyphosphoester, yielding a cross-linked solid polymer electrolyte (TFMPE). The deliberate incorporation of phosphate, ether, and carbonate units with -CF3 side groups imparts intrinsic flame retardancy (from P/F) and governs ion transport. The resulting TFMPE membrane exhibits a balanced suite of properties: high ionic conductivity (3.7×10-4 S cm-1), a wide electrochemical window (4.9 V), and a high Li+ transference number (0.51), which promotes uniform Li+ flux and improves interfacial stability. Moreover, in-situ polymerization forms a seamless electrode/electrolyte interface, suppresses Li dendrite growth, and enables stable Li||Li cycling for 2000 h. Full cells using LiFePO4, LiMnFePO4, and LiCoO2 cathodes also show excellent cycling stability.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yanni Li,Zhigui Zhang,Baobao Wang,Runguo Zheng,Dan Wang,Zhishuang Song,Yanguo Liu,Zhiyuan Wang
High-entropy oxides (HEOs) represent promising anode materials for lithium-ion batteries, yet understanding the intricate relationship between their multi-element composition, crystal structure, and lithium storage mechanism remains a fundamental challenge. This study systematically investigates this relationship in (XCoNiCuZn)O (X = Li, Na, Mg) HEOs by modulating the fifth element. While all compositions form a single rock-salt structure, the cationic radius and valence state of X dictate both the lattice parameters and the electrochemical reaction pathway. It is revealed that (LiCoNiCuZn)O and (MgCoNiCuZn)O undergo a conversion-dominated phase transition mechanism, whereas (NaCoNiCuZn)O follows a solid-solution reaction. This mechanistic divergence, elucidated through in-situ EIS, ex-situ XRD/XPS, and kinetic analysis, directly governs the electrochemical performance. The Li-based HEOs (LiCoNiCuZn)O demonstrates exceptional performance, delivering a high capacity of 549.7 mAh g −1 with 83.4% retention after 300 cycles at 0.5 A g −1 , attributable to its effective charge compensation and superior ion conductivity. This work establishes a clear correlation from cationic modulation to storage performance, offering critical guidance for the rational design of HEOs for energy storage.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Hui-Qian Huo,Ze-Jian Chen,Bing-Xin Gu,Xiang-Yun Xie,Yan-Li Ji,Cong-Jie Gao
Selective cation exchange membranes (SCEMs) are crucial for renewable energy storage and conversion, seawater softening and wastewater treatment, and ionic resource extraction and purification. However, precisely controlling the pore microstructure of SCEMs to efficiently separate mono-/divalent cations with similar hydrated radii remains a critical challenge in electrodialysis (ED) membrane research. Herein, we report a surface-programmed cross-linking strategy to fabricate an ultrathin, asymmetric modification layer on a commercial CEM (CTG) using diaminoethyl imidazole bromide (DAIB) monomers and polyethyleneimine (PEI) macromolecules. A hydrophilic, loose cross-linked DAIB-rich sub-layer was first formed on the CTG surface via the Debus–Radziszowski reaction, followed by the construction of a densely cross-linked PEI-rich upper layer through secondary surface cross-linking. The asymmetric architecture and chemical design of the PEI-DAIB composite modification layer facilitate rapid monovalent ion transport while efficiently rejecting divalent ions, thus overcoming the permeability-selectivity trade-off. The optimized PEI-DAIB composite membrane exhibits a high Li + permeation rate (0.75 mol m −2 h −1 ) and exceptional Li + /Mg 2+ permselectivity (72), outperforming most state-of-the-art ED membranes reported in the literature. Furthermore, the membrane demonstrates excellent stability and efficient Li + extraction from simulated salt-lake brines via two-stage ED, ultimately achieving 99.9% Li + purity with low energy consumption (∼0.2 kWh mol −1 Li + ). This work provides a promising strategy for developing high-performance SCEMs to achieve sustainable ionic resource extraction and purification.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2024
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IF 4.1
Zhilong Wang,Chao Zhang,Zhongcheng Li,Zeyu Teng,Yu Wang,Kanghua Chen,Changjun Zhu
The uncontrolled growth of lithium dendrites and unstable solid-electrolyte interface (SEI) film limit the practical application of lithium metal anodes. In this study, we report a synergistic strategy utilizing a Li-Na alloy and fluoroethylene carbonate (FEC) for the in-situ construction of LiF/NaF-rich hybrid SEI film. This approach inhibits the growth of lithium dendrites and mitigates the volume expansion of lithium metal anodes during repeated plating/stripping. The results indicate that Na + is precipitated from the Li-Na alloy anodes during cycling, with Na + preferentially depositing on the surface of active Li crystals. Meanwhile, Li + is forced to deposit in the inactive regions around Na, thereby inhibiting the growth of lithium dendrites. The LiF/NaF-rich hybrid SEI film, which process high ionic conductivity and mechanical strength, form on the surface of Li-Na alloy anodes, alleviating the volume expansion of lithium metal anodes. When the molar ratio of Li/Na is 16, the Li-Na alloy exhibits excellent cycling stability and low overpotential. The Li-Na alloy||Sulfurized polyacrylonitrile (SPAN) full cell demonstrates a high reversible capacity of 630 mAh g −1 at 1000 mA g −1 , with 70 % capacity retention after 300 cycles, significantly higher than Li||SPAN (48 %). This strategy presents a potential solution for the practical application of long-life and high energy density lithium-sulfur batteries.
研究领域:
材料科学
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电化学
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储能技术
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电池技术
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