JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yuan Wang,Wenqi Zhang,Yuyang Qi,Shaofu Wang,Pei Liu,Xiaoyun Wei,Yanhua Yu,Weiwei Sun,Xing-Zhong Zhao,Yumin Liu
Metallic Li, with ultrahigh theoretical capacity (3860 mA h g −1 ) and the lowest electrochemical potential (−3.04 V vs. the standard hydrogen electrode), is perfectly meet the needs of high energy density lithium batteries . However, the direct use of metallic lithium as anode would cause serious dendrite and huge volume expansion, which will bring safety hazards and restrict the practical commercialization of Li metal anodes . Herein, a facile electrophoretic deposition (EPD) method was employed for the first time to fabricate uniform TiN modified commercial Cu foam (TiN@Cu foam) as the lithiophilic 3D conductive skeleton. The lithiophilic TiN acts as the well-distributed seeds to promote the uniform lithium deposition, attributing to the lowed nucleation overpotential. The porous and conductive Cu foams can further mitigate the formation of Li dendrites, on account of its high specific surface area reduce the effective current density. The TiN@Cu foam based half cells and symmetric cells both exhibit improved reversibility and reduced polarization voltage in lithium plating/stripping process. Furthermore, better rate performance and cycling stability were also achieved in the full-cell configurations of TiN@Cu foam-Li/Li 4 Ti 5 O 12 (LTO) and TiN@Cu foam-Li/LiFePO 4 (LFP). This work demonstrates a facile strategy to modify the commercial current collectors with pre-synthesized lithiophilic nanoparticles for achieving uniform Li deposition.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Fei Wang,Jingxia Gao,Delin Yang,Haoming Li,Jinping Zhang,Jie Liu,Yong Liu,Fengzhang Ren
The uneven lithium deposition on Cu current collector and poor interface stability of lithium metal/electrolyte would lead to rapid capacity decay and potential safety risks, which severely hinder the practical applications of lithium metal batteries. In this work, the in-situ derived Ti 3 C 2 T x MXene/TiO 2 (labeled as MXene/TiO 2 ) composite with favorable lithiophilicity and conductivity is applied as modified layer on Cu foil current collector (labeled as MXene/TiO 2 @Cu) to obtain the uniform and dense lithium plating. Compared with bare Cu and commercial TiO 2 nanoparticles modified Cu current collector (labeled as Nano TiO 2 @Cu), the MXene/TiO 2 @Cu combines abundant lithium nucleation sites and improved conductivity, which could promote uniform lithium plating and stripping at high current density and effectively avoid the generation of dead lithium or lithium dendrites. As a result, the MXene/TiO 2 @Cu-based symmetric battery could stably cycle for 2000 h at high current density of 3 mA cm −2 with capacity of 3 mAh cm −2 , and the MXene/TiO 2 @Cu-Li‖LiFePO 4 full battery could maintain the high reversible capacity of 104.0 mAh g −1 at 1 C after 500 cycles. This work provides an effective and novel protection strategy for Cu current collector, which is critical for the design of lithium metal batteries with favorite rate capability at high current density.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2021
·
IF 3.605
Xiao-Ru Chen,Xiang Chen,Chong Yan,Xue-Qiang Zhang,Qiang Zhang,Jia-Qi Huang
Lithium (Li) metal is one of the most promising anode materials but suffers from inhomogeneous Li deposition, which is a limiting factor for the practical application of Li metal batteries. Some metals with high lithiophilicity are extremely recognized for achieving uniform Li deposition, but how these metals work is still unknown. Herein, the role of lithiophilic metals on the Li-plating process is explored on the basis of the experiments and theoretical calculations. The nucleation barrier is significantly reduced, owing to the alloying reaction between metals and Li species. The Li ions are subsequently attracted by the above favorable lithiophilic nucleus and conversed into Li atoms as a result of the high binding energy between the Li species and alloy nuclei. Besides, deposited Li diffuses into the electrode lattice via the channels with a low diffusion barrier. By construction of metal sites as well as the formation of alloy nuclei with high lithiophilicity, a dendrite-free anode can be realized. This study sheds fresh light on the lithiophilic electrochemistry and dendrite inhibition strategies for safe and high-energy-density Li metal batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 38
·21695-21702
·
IF 12.732
Xiaojie Shen,Guangyu Zhao,Xianbo Yu,Huihuang Huang,Ming Wang,Naiqing Zhang
Undesirable lithium dendrite growth limits the application of lithium metal anodes in high-energy storage batteries. Here, multifunctional SnSe–C composite modified 3D scaffolds are constructed to achieve dendrite-free lithium deposition. During the initial lithiation stage, the porous SnSe–C composite converts into a Li–Sn alloy and Li2Se by lithium reduction. The lithiophilic Li–Sn alloy exhibits a low nucleation barrier and realizes homogeneous lithium nucleation. The reductive product Li2Se with a high ionic conductivity facilitates lithium ion transport, which helps realizing the homogeneous lithium ion flux and reducing concentration polarization. Benefitting from the synergistic effect of the Li–Sn alloy and Li2Se, the Li/SnSe–C anode exhibits an ultralong lifespan over 1100 h with a low overpotential of 18 mV. In full-cell configurations with LiFePO4 cathodes, the Li/SnSe–C anode demonstrates enhanced rate capability and cycle stability with a high-capacity retention of 85% over 750 cycles. This work prepares multifunctional SnSe–C composite modified 3D scaffolds to regulate lithium nucleation and transport, which offers new insights and opportunities for developing dendrite-free lithium metal battery technology.
研究领域:
材料科学
·
电化学
·
储能技术
✓ 已验证
产品关联
DOI
高影响因子
RARE METALS
·
2024
·
IF 9.6
Liu Ke-Xin,Tan Ran,Zheng Zhong,Zhao Rui-Rui,Ülgüt Burak,Ai Xin-Ping,Qian Jiang-Feng
Lithium metal, with its exceptionally high theoretical capacity, emerges as the optimal anode choice for high-energy-density rechargeable batteries. Nevertheless, the practical application of lithium metal batteries (LMBs) is constrained by issues such as lithium dendrite growth and low Coulombic efficiency (CE). Herein, a roll-to-roll approach is adopted to prepare meter-scale, lithiophilic Sn-modified Cu mesh (Sn@Cu mesh) as the current collector for long-cycle lithium metal batteries. The two-dimensional (2D) nucleation mechanism on Sn@Cu mesh electrodes promotes a uniform Li flux, facilitating the deposition of Li metal in a large granular morphology. Simultaneously, experimental and computational analyses revealed that the distribution of the electric field in the Cu mesh skeleton induces Li inward growth, thereby generating a uniform, dense composite Li anode. Moreover, the Sn@Cu mesh-Li symmetrical cell demonstrates stable cycling for over 2000 h with an ultra-low 10 mV voltage polarization. In Li||Cu half-cells, the Sn@Cu mesh electrode demonstrates stable cycling for 100 cycles at a high areal capacity of 5 mAh·cm −2 , achieving a CE of 99.2%. This study introduces a simple and large-scale approach for the production of lithiophilic three-dimensional (3D) current collectors, providing more possibilities for the scalable application of Li metal batteries. Graphical abstract
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Junlong Feng,Le Hu,Xiaowei Wu,Ziqin Liu,Kaiquan He,Pu Hu,Chaoqun Shang
The uncontrollable Li dendrite accumulation accompanied by low Coulombic efficiency severely hampers the sustainable and practical application of lithium metal batteries (LMBs). To tune the uneven Li + flux caused by irregular pores on commercial separator and realize modulated Li + plating/stripping behaviors, in this work, we report the modification of commercial polypropylene separator with etched Co/Fe-based Prussian blue analogue (PP@PBA-X, X represents the HCl etching time). The optimal PBA-4 with acid etching for 4 h possesses regulated micro-/meso-/macro-porous structure, which ensures homogeneous Li + flow of PP@PBA-4 with high Li + transference number of 0.76 and further hinders the growth of Li dendrites. With the assistance of PP@PBA-4, the Li||Li cell shows stable cycling performance for 500 h at 1 mA cm −2 with fixed specific capacity of 1 mAh cm −2 , while the full Li-S battery with limited Li supply delivers favorable cycling stability for almost 430 cycles with 60 % capacity retention and high Coulombic efficiency of 99.95 % at current density of 500 mAg −1 .
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jiahui Zhou,Man Xie,Feng Wu,Guangling Wei,Yang Mei,Ruling Huang,Guoqiang Tan,Li Li,Renjie Chen
Great efforts have been made to optimize Li metal anodes to improve energy density and cycle life. However, challenges remain in achieving uniform Li plating/stripping while maintaining stable interphase chemistry. Here, an engineered graphene aerogel with uniformly oriented microscale channels, and normalized lithiophilic binding sites as hosted Li anodes is reported. Vertically aligned graphene with oriented channels are constructed using a freeze-drying mechanism, and highly lithiophilic binding sites are optimized by adjusting functional oxygen anions on graphene. Based on the in-situ optical microscopy visualization and first-principles calculations, this graphene host design presents homogeneous Li-ion nucleation owing to its straight transport channels with ultrahigh lithiophilicity, resulting in greatly improved cycling stability. Also, the flat and compatible electrode–electrolyte interphase facilitates smooth Li growth, thereby suppressing the formation of dendrites. Notably, the symmetric cells using the new composite anodes exhibit superior electrochemical reversibility over 500 cycles, with the patternable LiFePO 4 //Li@graphene pouch cells displaying outstanding cycling performance. This graphene-hosted Li anode thus demonstrates great potential for Li batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Tian Liang,Zengxu Qian,Jingjing Liu,Zhipeng Wang,Heran Nie,Fengquan Liu,Yunlong Sun,Minjie Qu
High reactivity and dendrite issue of lithium anodes hinder the development of lithium metal batteries (LMBs). However, commercial polyolefin separators may accelerate Li dendrite growth due to insufficient electrolyte affinity and lack of ion transport induction. Herein, two novel phenolphthalein-based polyether sulfone (PES-C) separators with “multi-carbonyl sites” named as PES2K-C and PES4K-C, are designed to build Li + transport channel to achieve faster Li + transport and homogeneous Li deposition behavior. The separators are realized by a simple non-solvent induced phase separation method and exhibit excellent electrolyte storage capacity and permeability, which are attributed to the high porosity and interpenetrating pore structure. Meanwhile, the carbonyl groups as anchoring sites provide so high electronegativity for separators that effectively immobilize the anion in the ion channel and accelerate Li + desolvation. Due to the gelation of electrolyte within separator, PES2K-C deliver a high ionic conductivity (1.35 mS cm −1 ) and Li + transference number (0.79) for batteries, much higher than the polyolefin separator. This optimized Li transfer behavior effectively inhibits the growth of lithium dendrites, resulting in an extremely stable Li plating/stripping cycle capability over 2000 h. With satisfactory electrochemical properties and excellent Li + transport characteristics, this strategy is feasible to prepare advanced separator for high-performance LMBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Energy & Fuels
·
2025
·
IF 4.1
Chen Yang,Hongjian Zhang,Mingtao Zhu,Ping Li,Hao Wu,Qiushi Wang,Yong Zhang
Polyvinylidene fluoride (PVDF)-based electrolytes have attracted significant attention for their potential use in solid-state lithium batteries (SSLBs) due to their superior electrochemical performance and safety. However, their low ionic conductivity and uneven lithium deposition hinder the further application of PVDF-based electrolytes. Herein, this work focuses on incorporating Ba0.6Sr0.4TiO3 (BST) ferroelectric ceramics into PVDF to form composite solid-state electrolytes (CSEs). The BST ferroelectric ceramics can create an intrinsic electric field that facilitates lithium-ion transport and enables uniform Li deposition. In addition, benefiting from the high dielectric constant of BST and dipoles generated from the asymmetric structure, PVDF–BST CSEs achieve a high ionic conductivity (1.79 × 10−4 S cm−1) due to more free lithium ions, a wide electrochemical window of 4.8 V (vs. Li/Li+) and a high Li+ transference number (0.37). The assembled Li|PVDF–BST|Li symmetrical cells can steadily cycle for 1100 h at 0.1 mA cm−2 at 25 °C. The assembled Li|PVDF–BST|LiFePO4 cells show long-term cycling stability with a capacity retention of 85.6% after 100 cycles at 0.5C and a capacity retention of 81.4% after 200 cycles at 1C. This work provides a new strategy for improving the performance of the PVDF-based electrolytes by incorporating ferroelectric ceramics.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
Small
·
2021
·Vol. 17
·期 44
·2102347
·
IF 13.281
Shuai Zheng,HaiYan Zhang,JinChen Fan,QunJie Xu,YuLin Min
Achieving uniform Li deposition is vital for the construction of a safe but also efficient Li-metal anode for Li-metal batteries (LMBs). Herein, a facile coating strategy is used for forming an ultra-thin aramid nanofiber (ANF) membrane, with a network structure, on a Li anode (ANF-Li) as an artificial layer inhibiting Li dendrite's growth. The results show that under an ultra-high current density of 50 mA cm −2 , the ANF-Li|ANF-Li symmetric cells can be kept stably cycled for a period exceeding 300 h. The ANF-Li|LiFePO 4 full cells exhibit a high-capacity retention of 80.1% after 1200 cycles at 1 C, showing a promising potential for LMBs application. Combined experimental results with theoretical calculations, the excellent performance of the ANF-Li anode is explored. Lithiophilic polar functional groups (CO, N H) appear in the surface and structure of ANF membrane, which offer high-concentration functional sites for the Li ions to realize an effective adhesion at the molecular level. This work also finds fiber-shaped lithium deposition for the first time. Furthermore, the nanoscale porosity of the ANF membrane not only provides fast pathways and channels for the diffusion of the electrolyte and Li transportation, but also eliminates the “weak links” of micron-scale Li dendrites penetrating the membrane.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 14
·7564-7571
·
IF 11.9
Yechen Si,Yunhao Jiang,Jiayi Liu,Hongyu Guan,Xing-Long Wu,Changsheng Shan
It is a huge challenge to develop safe and stable lithium metal batteries with high energy density owing to the growth of Li dendrites. Herein, for the first time, an oxidized ZIF-8/polyacrylonitrile (OZPAN) fiber film is designed as a multifunctional interlayer for constructing a novel Li metal battery with superior performance. The excellent lithophilicity and uniform porous structure of the OZPAN interlayer could anchor and regulate Li-ion flux with high ionic conductivity (2.22 mS cm−1), high Li+ transference number (0.78) and homogeneous Li deposition. Therefore, the Li//Li symmetric cell exhibits ultralow overpotential (11 mV) with long-term cycling stability and dendrite-free Li deposition. Moreover, Li//LiFePO4 (LFP) full cell has an extremely high capacity (162 mA h g−1 at 1C, close to the theoretical specific capacity of LFP), outstanding rate performance and high coulombic efficiency (more than 94%) during 500 cycles. This study demonstrates a promising interlayer strategy for developing high-performance Li metal batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Qiujun Wang,Ya Su,Weiqi Zhu,Zhaojin Li,Di Zhang,Huan Wang,Huilan Sun,Bo Wang,Dan Zhou,Li-Zhen Fan
Composite polymer electrolytes (CPEs) with Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) ceramic oxide electrolytes are attracting significant interest because of the merits of LLZTO. However, inadequate solid-solid contact between electrolytes and electrodes invariably results in high interfacial impedance, which is harmful to CPEs' performance. Herein, fluoroethylene carbonate (FEC) additive which possesses excellent ability in guiding uniform Li + deposition and suppressing Li dendrite growth was introduced into the electrolyte, and novel CPEs were successfully prepared. It shows a broad electrochemical window of 5.2 V (vs. Li + /Li), low interface impedance, and a high lithium ion migration number of 0.62. As a result, the assembled symmetrical Li/PHTL-FEC-LLZTO/Li cells can run stably for over 500 h at 0.2 mA cm –2 . Moreover, the Li metal battery with LiFePO 4 (LFP) cathode shows superior cyclic stability with a high initial capacity of 132.9 mAh g –1 , and a large retention of 88.5% after 200 cycles at 0.5 C. This excellent electrochemical performance of the battery can be attributed to the employment of FEC additives, which endows promising potential in reducing the interface impedance, promoting lithium uniform deposition, and stabling interface performance in the electrolyte.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）