ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jiechen Song,Yuxing Xu,Yuncheng Zhou,Pengfei Wang,Hailan Feng,Jun Yang,Fuchang Zhuge,Qiangqiang Tan
In the field of solid-state lithium metal batteries (SSLMBs), constructing vertically heterostructured poly(ethylene oxide) (PEO)-based solid electrolytes is an effective method to realize their tight contact with cathodes and Li anodes at the same time. Succinonitrile (SN) has been widely used in PEO-based solid electrolytes to improve the interface contact with cathodes, enhance the ionic conductivities, and obtain a high electrochemical stability window of PEO, but its application is still hindered by its intrinsic instability to Li anodes, which results in corrosion and side interactions with lithium metal. Herein, the cellulose membrane (CM) is introduced creatively into the vertically heterostructured PEO-based solid electrolytes to match the PEO-SN solid electrolytes at the cathode side. With the advantage of the interaction between −OH groups of CM and −C≡N groups in SN, the movement of free SN molecules from cathodes to Li anodes is limited effectively, resulting in a stable and durable SEI layer. In specific, the Li||LiFePO4 battery with the CM-assisted vertically heterostructured PEO-based solid electrolyte by in situ preparation delivers a discharge capacity of around 130 mAh g–1 after 300 cycles and capacity retention of 95% after 500 cycles at 0.5 C. Our work provides a solution to construct PEO-based solid electrolytes feasible to match cathodes and Li anodes effectively by intimate contact with electrodes.
研究领域:
材料科学
·
电化学
·
储能技术
·
固态电池
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聚合物电解质
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·Vol. 46
·期 3
·3242-3249
·
IF 3.45
Shiqiang Cui,Sanming Chen,Libo Deng
Silicon has been widely researched as next-generation lithium-ion batteries (LIBs) anodes on account of its high energy density . To solve the large volume expansion and low electroconductivity , carbon coating Si strategies have been developed and shown some progress. In this study, Si nanoparticles were injected into the inner of the double-deck carbon nanotubes for the formation of a sandwich-like structure to enhance the electrochemical properties of Si electrodes. Thereinto, carbon nanotube arrays (CNTs) were fabricated by liquid paraffin as the carbon resource instead of unsaturated hydrocarbon for the first time by chemical vapor deposition (CVD) method. Due to the advantage of the specific structure designed, the as-prepared material shows superior rate performance and excellent cycling stability with high capacity retention (1310 mAh g −1 at 0.1 A g −1 after 100 cycles and 1050 mAh g −1 at 1 A g −1 after 500 cycles with 98% of Coulombic efficiency). Furthermore, the full cell was also assembled with LiFePO 4 as the cathode and manifested a high energy density of 374 Whkg −1 with stable cycling performances (92% capacity retention ratio after 200 cycles).
研究领域:
材料科学
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储能
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电化学
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纳米材料
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电池技术
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.6
Zhaojin Li,Yidi Chen,Ximing Liu,Jialin Ren,Huilan Sun,Di Zhang,Qiujun Wang,Qujiang Sun,Ranran Li,Fei Yuan,Bo Wang
Lithium-rich manganese-based cathodes offer high capacity but suffer from voltage fade and capacity decay due to oxygen release and structural instability. While various modifications exist, achieving high-level mixing of the key C 2/ m and R -3 m phases remains challenging. This study presents a straightforward approach to control phase compatibility by tuning the pre-calcination time. We find that an 8-hour pre-calcination optimally enhances the mixing of the C 2/ m and R -3 m phases, minimizes grain size, and increases Mn 4+ and lattice oxygen content. This tailored microstructure suppresses side reactions and facilitates Li + diffusion. The resulting material delivers a high capacity of 254.3 mAh⋅g -1 at 0.1C and exceptional cycling stability with 98.1 % capacity retention after 250 cycles at 1C. This work highlights the critical role of pre-calcination in regulating phase structure and provides a practical route for developing high-performance lithium-rich cathodes.
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Yuan Qin,Lu Huang,Xufeng Wang,Liang Luo,Zihao Ou,Youcun Bai,Bin Xiang,Yang Zhou,Xuefeng Zou,Hujun Shen
MnO anodes face serious limitations in high performance lithium–ion batteries due to their intrinsically low electronic conductivity and significant volume expansion during cycling. Here, we propose a simple lattice–engineering strategy to precisely control the degree of lattice contraction and induce an in situ electrochemical amorphization process. Existing strategies can partially buffer mechanical stress and enhance charge transfer but still fail to overcome the intrinsically poor conductivity of MnO and the limited ability of conventional carbon matrices to accommodate electrochemical amorphization. In our design, we establish a hierarchical stabilization system governed by lattice engineering. Specifically, the lattice contraction introduces controllable oxygen vacancies, which serve as the trigger for a cycle-driven in-situ amorphization mechanism. This intrinsic structural reconstruction, synergized with the extrinsic protection of an N-doped adaptive carbon interface, enables the superior long-term cycling stability and enhanced capacity of MET(5Mn)-700. The MET(5Mn)-700 half–cell retains over 90% of its initial capacity after 500 cycles at 1.0 A g −1 , while an NCM811‖MET(5Mn)-700 full cell maintains 93% capacity retention after 200 cycles at 1C. This multilevel structure–interface–dynamics design overcomes the performance degradation bottleneck of traditional Mn–based anodes, providing a new paradigm for developing high–stability lithium–ion battery anodes.
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 3.9
Huang Xing-Wen,Chen Yi-Zhao,Hu Jin-Hong,Liao Song-Yi,Li Yue-Zhu,Liu Rong-Tao,Liu Yi-Dong,Li Shi-dong,Min Yong-Gang
Traditional lithium-ion batteries suffer from poor cycle and rate performance due to low structural stability and the sluggish charge transfer kinetics of cathode during the lithiation and delithiation processes. Polyimide (PI) electrode, known for high theoretical capacity, structural tunability, inherent safety feature and sustainability, have garnered significant attention, offering a promising solution in addressing these issues. Nevertheless, the intrinsic insulation characteristic restricts the capacity of PI material. The emergence of two-dimensional layered Ti 3 C 2 T x MXene with low charge transfer resistance and high electrocatalytic activity is highly suitable for enhancing the electrochemical performance of PI. Therefore, integrating PI with few-layered MXene would combine PI’s abundant redox-active sites with MXene’s excellent conductivity, creating a robust electrode with high capacity, ultrafast kinetics, and cycle durability. Based on this strategy, the hybrid material composed of naphthalene-based PI (NPI) with stable molecular structure and few-layered MXene, denoted as NPI@MXene, has been successfully designed and fabricated through the eco-friendly solid-state polycondensation approach. By adjusting the feed ratio of reactants, the hybrid electrode with 10 wt% MXene (NPI@10%MXene) demonstrates the layer-plus-island-like stable structure and good interaction between NPI and MXene, which delivers the highest rate capacity. Even subjected to a high-current density of 8 A g −1 , the NPI@10%MXene composite maintains 74% (~ 84 mAh g −1 ) of its initial capacity. It also exhibits long-life cycling stability with ~ 77% retention after 5000 cycles (1 A g −1 ). Moreover, the NPI@10%MXene composite reveals enhanced capacitive effect and fast Li + diffusion coefficient during the discharge/charge process (1.43 × 10 –9 /1.43 × 10 –9 cm 2 s −1 , respectively), outperforming those of pristine NPI. The above experimental results highlight remarkable potential of NPI@10%MXene for application in ultrafast Li + storage. Thus, NPI@10%MXene cathode offers a viable strategy to reconcile rapid electrochemical reaction with long-term stability in sustainable rechargeable batteries.
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DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Qi Liu,Jiacai Xiong,Zhimin Zou,Yu Bai,Chunhai Jiang
Nano-sized spinel lithium titanate (Li 4 Ti 5 O 12 , LTO) particles are homogeneously decorated on natural graphite (NG) granulates via a sol-gel method followed by thermal pyrolysis, forming NG-LTO composite materials. The LTO-modified NG anode demonstrate improved rate and cycle performance as anode materials of Li-ion batteries. Specifically, at a current rate of about 8 C (3 A g −1 ), the optimized NG-LTO composite anode displays a specific capacity of 97.5 mAh g −1 , and after 300 charge-discharge cycles at a current rate of 0.5 A g −1 , the capacity retention ratio is also enhanced referring to the pristine NG anode. The “zero-strain” effect and fast Li ion diffusion feature of LTO, and also its current sharing effect brought out by its high voltage plateau might have resulted in the improved electrochemical properties of NG-LTO composite anodes. These findings convincingly indicate that surface decoration of nano-LTO may provide a practical and feasible strategy for enhancing the rate and cycling performance of NG anode, promising for Li-ion batteries with fast-charging and long term cycling stability.
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产品关联
DOI
高影响因子
AICHE JOURNAL
·
2026
·
IF 4.4
Haojie Chen,Zong Lu,Yanna Wu,Zhengyi Huang,Yuhang Zhang,Meng Zhang,Shuming Li,Jing Wang,Yanying Wei,Haihui Wang
With growing demand for lithium resources, developing high-performance Li + /Mg 2+ separation methods for salt-lake brines has become crucial, especially the highly efficient energy-saving membrane technology. For the traditional nanofiltration (NF) membranes for mono−/multivalent ion separation, achieving simultaneously high permeance and selectivity for lithium extraction from brine remained a critical challenge. Herein, we proposed a kind of cationic covalent organic frameworks (COF), TpEBr nanosheets with positive charge and structural regulation capability as dual-functional regulator for polyamide (PA) NF membranes. The introduction of TpEBr as additive reduced the diffusion rate of polyethyleneimine (PEI), forming a thin and loose membrane. Additionally, quaternary ammonium groups on TpEBr increased the membrane's surface Zeta potential, significantly strengthening the Donnan exclusion effect. The optimized membrane exhibited a significant Li + /Mg 2+ selectivity of 46.4 with a 25% increase in permeance. Such dual-functional regulation strategy for constructing high-performance NF membranes proposed in this work is promising for future highly efficient lithium extraction from brines.
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Wei Yang,Ping Xiong,Yinghong Wang,Tao Tao,Xuerui Liu,Xiaoling Xu,Caiyun Yang,Liming Yang,Huiji Xiao,Kai Zhang,Wei Zhang,Xubiao Luo
Membrane separation technology serves as an essential approach for the efficient and sustainable extraction of lithium from salt-lake brines, whose effectiveness crucially depends on the selective Li + /Mg 2+ separation performance. However, conventional nanofiltration (NF) membranes remain constrained by the trade-off between water permeability and ion selectivity. In this study, we proposed a two-step fabrication strategy that couples solution deposition with interfacial polymerization (IP), successfully constructing a positively charged Zr-His/PTF composite NF membrane with a thin selective layer and uniform pore size. Hydrated zirconia clusters (hydrous-ZrO 2 ) derived from inorganic zirconium salts were utilized to regulate the distribution of reaction sites via electrostatic anchoring, while the amphipathic structure of histidine was employed to restrict the diffusion of aqueous monomers. These two components synergistically modulated the IP process, enabling the precise regulation of the selective layer microstructure while significantly reducing organic reagent consumption. Under a high Mg 2+ /Li + mass ratio of 30:1, the modified membrane achieved a synchronous enhancement in Li + /Mg 2+ separation selectivity (29.57) and water permeance (21.7 L·m −2 ·h −1 , 6 bar). Moreover, the membrane maintained stable separation performance and structural integrity across a wide Mg 2+ /Li + mass ratio range (1:1 to 100:1) and throughout 100 h of continuous operation. Through the integration of fabrication methods, this study provides a straightforward, low-cost and environmentally friendly strategy for fabricating high-performance NF membranes.
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Jiahui Xu,Meihua Chen,Xueyin Wang,Yueying Liu,Zhian Wang,Zhenguo Wu,Benhe Zhong,Tingru Chen,Xiaodong Guo
Olivine-type LiMnxFe1–xPO4 (LMFP) is a promising high-voltage cathode for next-generation lithium-ion batteries; however, its commercialization is hindered by structural instability from Mn3+ Jahn–Teller distortion and sluggish ionic kinetics. Herein, we develop a novel gradient-insertion strategy to address these limitations simultaneously. Through a facile solid-state process, Mg2+ is incorporated into LMFP microspheres, creating a concentration profile. Structural characterization confirms the successful incorporation of Mg2+, predominantly occupying the transition-metal sites, without altering the primary structure or forming a coating layer. This targeted modification significantly improves electrochemical performance: the Mg-insertion cathode (LMFP-Mg) delivers a high capacity of 149.78 mAh g–1 at 0.1 C, with the Mn redox contribution increasing significantly from 40.3% to 53.2%. After 300 cycles at 1 C, LMFP-Mg retains 91.2% of its capacity, significantly outperforming pristine LMFP (80.5%). At a high rate of 5 C, LMFP-Mg demonstrates a 26.4% improvement in discharge capacity compared to LMFP. Mechanistic studies reveal that gradient Mg2+ insertion cooperatively stabilizes the bulk lattice, suppresses Mn3+ Jahn–Teller distortion, and enhances Li+ diffusion coefficient, while the Mg-rich surface mitigates transition-metal dissolution and interfacial side reactions. This work demonstrates that spatially controlled insertion is a promising strategy for designing high-energy-density, long-life olivine cathodes.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Minghao Sun,Haoxiang Zhong,Shuren Jiao,Hanqi Shao,Lingzhi Zhang
Carboxymethyl chitosan (C-CTS) was firstly reported as a water soluble binder for LiFePO 4 cathode in Li-ion batteries. The electrochemical performances of LiFePO 4 cathode with C-CTS binder was investigated and compared with the conventional water-soluble sodium carboxymethyl cellulose (CMC) and the commercial non-aqueous polyvinylidene difluoride (PVDF). LiFePO 4 cathode with C-CTS exhibited a comparable cycling performance, but better rate capability than that of CMC and PVDF, retaining 65% capacity of C/5 at 5 C rate as compared with 55.9% and 39.4% for CMC and PVDF, respectively. In addition, LiFePO 4 cathode with C-CTS exhibited excellent cycling performance at 60 °C, retaining 91.8%/62.1% capacity after 80 cycles at 1 C/10 C, respectively.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子化学
·
电池技术
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DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Xuexia Lan,Xingyu Xiong,Jie Cui,Renzong Hu
In the past two decades, a lot of high-capacity conversion-type metal oxides have been intensively studied as alternative anode materials for Li-ion batteries with higher energy density. Unfortunately, their large voltage hysteresis (0.8–1.2 V) within reversed conversion reactions results in huge round-trip inefficiencies and thus lower energy efficiency (50%–75%) in full cells than those with graphite anodes. This remains a long-term open question and has been the most serious drawback toward application of metal oxide anodes. Here we clarify the origins of voltage hysteresis in the typical SnO 2 anode and propose a universal strategy to minimize it. With the established in situ phosphating to generate metal phosphates during reversed conversion reactions in synergy with boosted reaction kinetics by the added P and Mo, the huge voltage hysteresis of 0.9 V in SnO 2 , SnO 2 -Mo, and 0.6 V in SnO 2 -P anodes is minimized to 0.3 V in a ternary SnO 2 -Mo-P (SOMP) composite, along with stable high capacity of 936 mA h g −1 after 800 cycles. The small voltage hysteresis can remain stable even the SOMP anode operated at high current rate of 10 A g −1 and wide-range temperatures from 60 to −30 °C, resulting in a high energy efficiency of 88.5% in full cells. This effective strategy to minimize voltage hysteresis has also been demonstrated in Fe 2 O 3 , Co 3 O 4 -basded conversion-type anodes. This work provides important guidance to advance the high-capacity metal oxide anodes from laboratory to industrialization.
研究领域:
电化学
·
材料科学
·
能源存储
·
纳米材料
·
固态化学
·
电池技术
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Junbao Lai,Kaibo Fan,Pengwei Zhou,Yanmin Zhou,Hao Tang,Guiping Dai,Gaixia Zhang,Long Tan
In addition to the Li + transport kinetics, the interface stability of the solid-state electrolyte is also critical for solid-state Li-metal batteries (SLMBs), especially for nickel-rich cathode-based ones. Herein, we develop an air-processable composite polymer electrolyte (CPE) using polyvinylidene difluoride (PVDF) as matrix, LiCF 3 SO 3 as Li-salt, Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 as fast Li-conductor and C 4 BLiO 8 (LiBOB) as additive. The presence of LiBOB suppress the defluorination reaction of PVDF in electrolyte solution , that reduce the corrosion reaction on LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) particles and enhance the intermolecular interactions between [Li(DMF) x ] + and PVDF as well. Importantly, the formed H 3 BO 3 in CPE induce the in situ passivation of Li-B-O/B-O on surface of NCM811 and Li-metal, which impedes the crack of NCM811 particles and growth of Li-dendrites. Thus, NCM811/Li battery exhibits a high specific capacity up to 196.1 mAh g −1 (0.1C) and excellent long-term stability. Specifically, a capacity retention rate of 71.8 % (134.5/181.1 mAh g −1 ) and 78.7 % (132.1/167.9 mAh g −1 ) has been achieved at 0.2C and 0.5C after 500 cycles, respectively, which represent one of the best performances in the field. This strategy also greatly enhance the cyclic stability of LiFePO 4 /Li battery, which shows a capacity retention rate of 92 % (143.5 mAh g −1 ) after 700 cycles.
研究领域:
材料科学
·
电化学
·
储能技术
·
固态电池
·
聚合物电解质
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）