RARE METALS
·
2023
·
IF 8.8
Zhang Lei,Meng Qian-Kun,Feng Xiang-Ping,Shen Ming,Zhang Yu-Qing,Zhuang Quan-Chao,Zheng Run-Guo,Wang Zhi-Yuan,Cui Yan-Hua,Sun Hong-Yu,Liu Yan-Guo
The high energy density and stability of solid-state lithium metal batteries (SSLMBs) have garnered great attention. Garnet-type oxides, especially Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO), with high ionic conductivity, wide electrochemical window, and stability to Li metal anode, are promising solid-state electrolyte (SSEs) materials for SSLMBs. However, Li/LLZTO interface issues including high interface resistance, inhomogeneous Li deposition, and Li dendrite growth have hindered the practical application of SSLMBs. Herein, a multi-functional Li–SnF 2 composite anode with Li, LiF, and Li-Sn alloy was specifically designed and prepared. The composite anode improves the wettability to LLZTO, constructing an intimate contact interface between it and LLZTO. Meanwhile, ionic/electronic conductive paths in situ formed at the interface can effectively uniform Li deposition and suppress Li dendrite. The solid-state symmetric cell exhibits low interface resistance (11 Ω·cm 2 ) and high critical current density (1.3 mA·cm −2 ) at 25 °C. The full SSLMB based on LiFePO 4 or LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode also shows stable cycling performance and high rate capability. This work provides a new composite anode strategy for achieving high-energy density and high-safety SSLMBs. Graphical abstract
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jun Cong,Shao-hua Luo,Qi Sun,Xin Liu,Yi-Kai Wang,Sheng-xue Yan,Peng-wei Li
Efficient leaching and recovery of LiFePO 4 (LFP) in spent lithium-ion batteries (LIBs) is a key step to realize the recycling of lithium resources. Herein, H 2 SO 4 -H 2 O 2 is selected as the leaching agent to achieve selective leaching of lithium from spent LFP cathode materials, and the response surface method (RSM) serves to define the optimal leaching process. The experimental findings signify that when the concentration of H 2 SO 4 is 0.315 mol·L -1 , H 2 O 2 /Li molar ratio of 2.13, H 2 SO 4 /Li molar ratio of 0.62 (solid–liquid ratio of 96.87 g·L -1 ), leaching temperature of 62 °C and leaching time of 90 min, the leaching rate of Li + can reach as high as 95.23 %. Thermodynamic analysis, infrared spectroscopy and Mössbauer spectrum are used to clarify the reaction mechanism, that is, Fe 2+ in LiFePO 4 is oxidized to Fe 3+ by H 2 O 2 in situ to form FePO 4 , and Li + is released into the solution. Moreover, chemical precipitation method is used to efficiently recover the lithium resources in the form of lithium carbonate. By applying Box-Behnken design (BBD) and RSM to optimize the recovery technology to reach the global optimal solution to achieve the highest recovery rate of Li + in spent LFP. The experimental results show that under the optimal conditions of a Na 2 CO 3 /Li molar ratio of 0.6, a reaction temperature of 90 °C, and a C (Li + ) of 20.28 g·L -1 , the precipitation rate of Li + reaches 89.22 %. Moreover, the physical properties of the recovered Li 2 CO 3 are analyzed, and the content of Li 2 CO 3 in the recovered product is as high as 99.62 %. Additionally, the economic analysis and environmental impact analysis of the whole process of hydrometallurgical recovery of cathode materials are carried out by EverBatt 2023 model, which confirmed that hydrometallurgy is the extremely satisfactory method for recovering spent LFP cathode materials.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
产品关联
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
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Along Zhao,Faping Zhong,Xiangming Feng,Weihua Chen,Xinping Ai,Hanxi Yang,Yuliang Cao
The global consumption for lithium hexafluorophosphate (LiPF6) has increased dramatically with the rapid growth of Li-ion batteries (LIBs) for large-scale electric energy storage applications. Conventional LiPF6 production has a high cost and high energy consumption due to complicated separation and purification processes. Here, based on the electrode materials of LiMn2O4 and polyaniline (PANI), we propose a facile electrochemical extraction/release process for LiPF6 electrolyte production. This new technology consists of two independent steps: a PF6–- and Li+-extracting step using a PANI/LixMn2O4 cell in aqueous solution (an ion extraction step) and a LiPF6 electrolyte production step from the charged LiMn2O4/PANI+PF6– cell in an organic electrolyte (an ion release step). This new process can effectively avoid the contamination of HF residue in the final product, providing a great possibility to create a facile, energy-efficient, and low-cost LiPF6 electrolyte production.
研究领域:
电化学
·
能源材料
·
锂离子电池
·
电解质工程
·
功能材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Liping Wu,Chuyue Cai,Xi Yu,Zihe Chen,Yuxin Hu,Fang Yu,Shengjun Zhai,Tao Mei,Li Yu,Xianbao Wang
Lithium sulfur batteries (LSBs) are regarded as one of the most promising energy storage devices due to the high theoretical capacity and energy density. However, the shuttling lithium polysulfides (LiPSs) from the cathode and the growing lithium dendrites on the anode limit the practical application of LSBs. To overcome these challenges, a novel three-dimensional (3D) honeycombed architecture consisting of a local interconnected Co3O4 successfully assembled into a scalable modified layer through mutual support, which is coated on commercial separators for high-performance LSBs. On the basis of the 3D honeycombed architecture, the modified separators not only suppress effectively the “shuttle effects” but also allow for fast lithium-ions transportation. Moreover, the theoretical calculations results exhibit that the collaboration of the exposed (111) and (220) crystal planes of Co3O4 is able to effectively anchor LiPSs. As expected, LSBs with 3D honeycombed Co3O4 modified separators present a reversible specific capacity with 1007 mAh g–1 over 100 cycles at 0.1 C. More importantly, a high reversible capacity of 808 mAh g–1 over 300 cycles even at 1 C is also acquired with the modified separators. Therefore, this proposed strategy of 3D honeycombed architecture Co3O4 modified separators will give a new route to rationally devise durable and efficient LSBs.
研究领域:
能量存储
·
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Xiao Huang,Cai Liu,Yang Lu,Tongping Xiu,Jun Jin,Michael E. Badding,Zhaoyin Wen
A high strength Li-Garnet solid electrolyte composite ceramic is successfully prepared via conventional solid state method with Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 and nano MgO powders. Well sintered ceramic pellets and bars are obtained with 0–9 wt.% MgO. Fracture strength is approximately 135 MPa for composite ceramics with 5–9 wt.% MgO, which is ∼50% higher than that of pure Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (90 MPa). Lithium-ion conductivity of the composite is above 5 × 10 −4 S cm −1 at room temperature ; comparable to the pure Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 material. SEM cross-sections of the composite ceramic shows a much more uniform microstructure comparing with pure ones, owing to the grain growth inhibition effect of the MgO second phase. A battery cell consisting of Li/composite ceramics/Sulfur-Carbon at 25 °C exhibits a capacity of 685 mAh g −1 at 0.2 C at the 200 th cycle, while maintaining a coulombic efficiency of 100%. These results indicate that the composite ceramic Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 -MgO is promising for the production of electrolyte membrane and fabrication of Li-Sulfur batteries.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 45
·23844-23850
·
IF 11.301
Mengmin Jia,Yawei Guo,Haiyan Bian,Qipeng Zhang,Lan Zhang,Suojiang Zhang
Lithium metal batteries (LMB) are one of the most attractive candidates for next generation high energy density devices owing to the high specific capacity (3860 mA h g−1) and low electrochemical potential (−3.04 V vs. standard hydrogen electrode) of the lithium metal anode. However, a series of problems, especially lithium dendrite growth, hinder its commercial application and these issues are more prominent under extreme conditions. In this work, a novel nanostructured macromolecular lithium salt (LiMS) electrolyte additive, polyethylene glycol (PEG) tethered to partially lithiated SiO2 nanoparticles, is designed and synthesized. This organic–inorganic hybrid nanosized additive can not only serve as a flexible physical barrier between the Li/electrolyte interphase and provide extra Li+, but also absorb HF through some of its functional groups, thereby reducing the parasitic reactions that take place at high temperatures. Facilitated by the nanoscale protective layer formed by the LiMS additive, the Li‖Li4Ti5O12 battery demonstrates outstanding electrochemical performance within the wide temperature range of −20 to 60 °C. More than 70% of its theoretical capacity is delivered at −20 °C and 0.5C rate; 80.23% capacity is retained after 200 cycles under a critical condition of 5C and 60 °C. Moreover, the LiMS additive also improves the compatibility between the electrolyte and LiNi0.8Co0.1Mn0.1O2, thus demonstrating its potential for wide applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2019
·Vol. 10
·期 1
·1-11
·
IF 11.878
Zhou Fei,Li Zheng,Lu Yu-Yang,Shen Bao,Guan Yong,Wang Xiu-Xia,Yin Yi-Chen,Zhu Bai-Sheng,Lu Lei-Lei,Ni Yong,Cui Yi,Yao Hong-Bin,Yu Shu-Hong
Lithium metal based anode with hierarchical structure to enable high rate capability, volume change accommodation, and dendritic suppression is highly desirable for all-solid-state lithium metal battery. However, the fabrication of hierarchical lithium metal based anode is challenging due to the volatility of lithium. Here, we report that natural diatomite can act as an excellent template for constructing hierarchical silicon-lithium based hybrid anode for high performance all-solid-state lithium metal battery. This hybrid anode exhibits stable lithium stripping/plating performance over 1000 h with average overpotential lower than 100 mV without any short circuit. Moreover, all-solid-state full cell using this lithium metal composite anode to couple with lithium iron phosphate cathode shows excellent cycling stability (0.04% capacity decay rate for 500 cycles at 0.5C) and high rate capability (65 mAh g −1 at 5C). The present natural diatomite derived hybrid anode could further promote the fabrication of high performance all-solid-state lithium batteries from sustainable natural resources.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
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 Physical Chemistry C
·
2023
·
IF 3.7
Wei-Wei Wang,Yu Gu,Chen-Xi Liu,Jiawei Yan,Bing-Wei Mao
The morphology of Li deposition has a profound effect on the cycling performance of a Li-metal battery. However, in situ research studies on the targeted regulation of Li deposition behavior and exploration of the thermodynamic and kinetic factors affecting Li deposition morphology are quite limited. Herein, we employ in situ atomic force microscopy (AFM) to investigate the effects of lithium iodide (LiI) additive on the evolution of Li deposition morphology in propylene carbonate (PC)-based electrolyte. The spherical Li deposits formed via three-dimensional (3D) nucleation and growth partially transform into planar morphology after the addition of 10 mM LiI, leading to a combined 3D nucleation and quasi-two-dimensional (2D) growth behavior. Complemented by X-ray photoelectron spectroscopy (XPS) profiling analysis and AFM nanomechanical characterization, the composition, structure, and properties of solid electrolyte interphases (SEIs) are comprehensively inspected. The SEI formed in the LiI-containing electrolyte bears an inorganic–organic hybrid structure with improved mechanical flexibility, compared with the rigid and thick SEI formed in the basic electrolyte. Meanwhile, the possible interfacial adsorption of Ĩ– contributes to the uniform distribution of Li+ and rapid diffusion of the Li atom. This work reveals the importance of an additive in regulating the Li deposition behavior, which is helpful in improving the Li-metal battery performance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Fengxing Long,Yanjia Zhou,Xiaodong Tang,Zheng Wang,Zhedan Yang,Liping Feng
For lithium extraction processes from liquid lithium resources, surmounting the interference of coexisting ions on the selective extraction of Li + − especially the selective separation of Mg 2+ and Li + − presents a challenging task. UIO-66 and HKUST-1, both metal-organic frameworks (MOFs), are synthesized using organic ligands with benzene ring groups. To boost the Li + adsorption and recognition capabilities of these two materials, LiNO 3 was introduced as a template, which not only constructs a Li + -size-adapted microenvironment within the adsorbent framework but also functions as a mineralizer, facilitating the formation of more uniformly sized crystals. The modified Li/UIO-66 and Li/HKUST-1 achieved maximum Li + adsorption capacities ( Q ) of 35.57 and 26.33 mg/g, respectively, reaching adsorption equilibrium within approximately 3 h. Li/UIO-66 showcases excellent Mg 2+ /Li + separation performance and maintains certain separation factor even in mixed solutions containing multiple interfering ions. Although Li/HKUST-1 demonstrates a stronger tendency for selective adsorption of higher-valent ions, it holds promise for the removal of interfering ions from solutions, thereby contributing to the overall optimization of lithium extraction processes.
研究领域:
材料科学
·
化学工程
·
分离技术
·
无机化学
·
吸附
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2025
·
IF 20.2
Siyu Fang,Tiansheng Bai,Jialin Liao,Shuai Zhang,Jiaxian Wang,Funian Mo,Wei Zhai,Zhenglin Hu,Jingyu Lu,Kwun Nam Hui,Lijie Ci,Deping Li
Lithium metal anodes hold the potential for high-energy-density batteries due to their substantial theoretical capacity, but their practical application is hindered by issues such as dendrite growth, poor cycling stability, and safety concerns. This study presents the development of a three-dimensional Li-Si composite alloy anode (Ag@Cu@Li-Si), combining a porous copper scaffold with a lithiophilic silver (Ag) layer and a lithium-silicon (Li-Si) alloy. The Ag@Cu@Li-Si composite demonstrates significant improvements in dendrite suppression, cycling stability, and electrochemical performance. The composite anode exhibits a critical current density of 15 mA cm −2 and over 900 hours of stable operation at 1.0 mA cm −2 in symmetric cells. When integrated into a full cell with a commercial LiFePO 4 cathode, it maintains excellent cycling stability, delivering over 600 cycles with a rate capability of 1.0 C. This study provides valuable insights into the design of lithium metal anodes, highlighting the importance of lithiophilic materials and 3D frameworks for high-performance lithium-metal batteries.
研究领域:
储能
·
材料科学
·
电化学
·
纳米技术
·
电池技术
✓ 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）