DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 11
·3526-3536
·
IF 4
Junxiang Zhou,Yudeng Wang,Bo Feng,Yong Sun,Jiafu Wang
Ternary transition metal oxides (TMOs) are potentially promising anode materials for lithium storage with high power and energy density. Designing appropriate electrode structures is an effective strategy to sufficiently exhibit the advantages of TMOs for lithium storage. Here, we present the synthetic process and electrochemical properties of carbon-coated mesoporous Ni–Mn–Co–O (NMCO) nanowire arrays (NWAs) grown on Ni foam as an integrated electrode for lithium-ion batteries (LIBs). The electrochemical measurements show that the carbon-coated NMCO integrated electrode exhibits high capacity and cycling properties. In addition, we have also developed an all one-dimensional (1D) structural full cell using an LiMn2O4 nanorod cathode and an NMCO/Ni NWAs@C-550 anode, which exhibits relatively outstanding cycling properties.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Hong-Yu Wang,Shi-Lin Mei,Xiao-Lan Tan,Bao-Hua Lu,Nan Li,Zhen-Bo Wang
The commercialized lithium nickel manganese cobalt oxides have been extensively applied for high-rate lithium-ion batteries due to its collective merits of fast kinetics, high specific capacity, and reasonable cost. The optimization on lithium nickel manganese cobalt oxide particles is crucial for high-rate batteries since the rate capability, storage and cycling stability are highly dependent on the chemical and physical properties of the cathode materials. Herein, the particle-feature influence on the high-rate performances is investigated to unveil the structure-property relationship. Through systematic electrochemical analysis and material characterizations, a direct comparison among commercial lithium nickel manganese cobalt oxide cathode materials with different particle size, doping, and crystalline structures has been performed. It is found that for polycrystalline lithium nickel manganese cobalt oxide materials, appropriate Al and Zr doping and small particle size are beneficial to superior rate performance and cycling stability up to 30 C. While single-crystalline particles show outstanding storage properties compared to polycrystalline particles with similar size and ion doping. Morphological and structural evolution of the lithium nickel manganese cobalt oxide particles after cycling has been revealed including the changed mixing degree of Li + /Ni 2+ , collapsing of primary particles and different parasitic reactions between the electrolyte and the particle surface. This work can provide direct guidance for the subtle design of efficient cathodes for high-rate lithium-ion 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
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Xinmei Wang,Junqiang Han,Jianing Ni,Jianan Li,Chang Gao,Changlei Qin
Spent lithium-ion batteries (LIBs) are expected to be discarded in huge amounts due to their limited service life, causing severe environmental problems if not properly handled. It is a promising route to obtain cheap CO2 separation materials of Li-based CO2 sorbents and Ni/Mn/Co-based oxygen carriers from spent ternary LIBs, realizing a win-win outcome in terms of waste recycling and CO2 reduction. However, the migration of key impurities during the recycling of spent LIBs and the approach to synthesizing CO2 separation materials may affect their physical and chemical characteristics. Herein, the work aims to develop CO2 separation materials from spent ternary LIBs, elaborating the migration and influence of impurities, and optimizing the performance of CO2 separation materials. Results show that Ni, Co, and Mn in spent LIB cathode enter oxygen carriers with a minor amount of Li, Al, etc., while Li mainly enters Li4SiO4 sorbents with some Na and Si. After optimization, the obtained oxygen carrier of CO–OC-0.3Al possesses a stable oxygen transport capacity of 16.3% during 30 cycles of reduction and oxidation, and the sorbent of CO-Li4SiO4-0.1Na could attain an excellent CO2 capacity of 0.26 g/g within 100 cycles of adsorption and desorption. We believe that the work could lay a foundation for the efficient construction of CO2 separation materials from spent LIBs, which is of great significance for environmental protection and low-carbon energy development.
研究领域:
能源工程
·
环境科学
·
材料科学
·
化学工程
·
可持续技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2020
·
IF 4.652
Weiguo Mao,Xiaoxue Zhu,Zhouqing Zhang,Huiyu Huang,Cuiying Dai,Junan Pan,Yong Pan,Xi Chen,Daining Fang
The multi-walled carbon nanotubes (MWCNTs) modified LiNi 0.5 Mn 0.3 Co 0.2 O 2 (NMC532) electrodes were prepared by using blade-coated method. The corresponding microstructure morphology were observed by scanning microscopy electron. The impedance spectroscopy and cycle performances of the electrodes with different MWCNTs contents were measured and discussed. Tensile fracture measurements of the electrodes were performed with the aid of digital image correlation technique . The cracking nucleation and propagation on the active layer surface were in situ monitored. A modified shear lag model was developed to analyze the fracture strength , fracture energy and fracture toughness of the active layer during tensions. The effect of MWCNTs on tensile failure mechanisms of two-layered NMC532 electrodes was discussed. The proposed method is useful for appraising the mechanical properties of other advanced active layers in lithium ion batteries .
研究领域:
材料科学
·
电化学
·
能源存储
·
锂离子电池
·
复合电极
·
力学性能
·
纳米材料
✓ 已验证
DOI
高影响因子
Advanced Energy Materials
·
2021
·Vol. 12
·期 2
·2102932
·
IF 29.368
Jing Yu,Xidong Lin,Jiapeng Liu,Jacky T. T. Yu,Matthew J. Robson,Guodong Zhou,Ho M. Law,Haoran Wang,Ben Zhong Tang,Francesco Ciucci
Solid-state batteries (SSBs) are an emerging technology for safe and high-energy-density electrochemical energy storage. Unfortunately, SSBs suffer from inadequate ionic conductivity and sluggish interfacial transport at subzero temperatures, which limit their widespread application. Herein, a flexible, stable, and highly conductive quasi-solid polymer electrolyte (QSPE) for SSBs is developed that allows low-temperature (LT) operation. The in situ polymerized QSPE has an integrated battery structure, outstanding ionic conductivity (e.g., 1.0 mS cm −1 at −30 °C), and exhibits favorable compatibility with Li metal (>2000 h in Li|QSPE|Li). Li|QSPE|LiFePO 4 and high-voltage Li|QSPE|LiNi 0.8 Mn 0.1 Co 0.1 O 2 batteries demonstrate excellent long-term stability (>2000 cycles at room temperature) and can operate effectively at LT (e.g., −30 °C). Furthermore, pouch cells with a LiNi 0.8 Mn 0.1 Co 0.1 O 2 (14.5 mg cm −2 ) cathode show flexibility, safety, and high capacity. The high performance of this QSPE is ascribed to its unique multilayer solvation structure that provides fast Li + transport and excellent interfacial stability. Thus, the newly developed electrolyte chemistry enables practical high-voltage, LT solid-state Li batteries.
研究领域:
材料科学
·
电化学
·
储能技术
·
高分子化学
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）