阴启昊,高波,尹俊太,付海洋,胡亮.锂离子电池正极材料改性研究进展[J].表面技术,2022,51(11):99-112, 195.
YIN Qi-hao,GAO Bo,YIN Jun-tai,FU Hai-yang,HU Liang.Research Progress on Modification of Cathode Materials for Lithium-ion Batteries[J].Surface Technology,2022,51(11):99-112, 195
锂离子电池正极材料改性研究进展
Research Progress on Modification of Cathode Materials for Lithium-ion Batteries
  
DOI:10.16490/j.cnki.issn.1001-3660.2022.11.009
中文关键词:  锂离子电池  正极材料  电化学  能量密度  存在问题  改性方法
英文关键词::The Influence of Oxygen Variation on the Crystal Structure and Phase Composition of the Superconductor YBa2Cu3O7-x[J]. ChemInform, 1988, 19(4):589.
基金项目:国家自然科学基金(51671052);中央高校基本科研业务费专项资金(N182502042);辽宁省兴辽英才(XLYC1902105)
作者单位
阴启昊 东北大学 冶金学院,沈阳 110819 
高波 东北大学 冶金学院,沈阳 110819 
尹俊太 东北大学 冶金学院,沈阳 110819 
付海洋 东北大学 冶金学院,沈阳 110819 
胡亮 东北大学 冶金学院,沈阳 110819 
AuthorInstitution
YIN Qi-hao School of Metallurgy, Northeastern University, Shenyang 110819, China 
GAO Bo School of Metallurgy, Northeastern University, Shenyang 110819, China 
YIN Jun-tai School of Metallurgy, Northeastern University, Shenyang 110819, China 
FU Hai-yang School of Metallurgy, Northeastern University, Shenyang 110819, China 
HU Liang School of Metallurgy, Northeastern University, Shenyang 110819, China 
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中文摘要:
      在高里程新能源动力汽车、电网储能以及5G通信的大背景下,高能量密度的锂离子电池成为了当下研究的热点。而正极材料的比容量大小将直接影响电池的能量密度,因此亟需对正极材料进行改性以改善其性能指标。综述了层状、尖晶石状、橄榄石状正极材料的结构特点及电化学性能,包括晶体结构、电子结构、循环稳定性、离子迁移速率及倍率能力等,比较了各类正极材料的优劣,并对常用的改性手段进行了相应总结。归纳了各类典型的正极材料存在的问题及其发展瓶颈,其中包括晶型变化、导电性能差、电压衰减、电解液侵蚀等,并分析了引起容量损失的因素,如高开路电压引起的电化学极化、材料组成元素的配比、电极/电解液界面的表面活性等。在此基础上,重点综述了近年来针对不同类型正极材料的改性研究进展,其中阴、阳离子掺杂,表面包覆有机物或无机物,特殊形貌设计,选择合适的电解液和黏结剂等手段能有效改善正极材料的比容量及结构稳定性。最后以现有的改性方法及电池体系为理论基础,对今后改性手段的发展趋势以及将正极材料应用于其他电池体系的可能性进行了展望。
英文摘要:
      Since Yoshino first invented the C/LiCoO2 battery system in 1983, rechargeable lithium-ion secondary batteries have undergone nearly 40 years of development. They are widely used in mobile electronic devices, new energy vehicles and other fields due to their portability, safety and long cycle life. In recent years, cathode materials such as binary and ternary layered oxides and LiFePO4 have gradually become prevalent for research in the field of energy storage. However, the disadvantages of the above cathode materials are also obvious, such as poor reversibility, degradation during the reaction process, low energy density and low electrical conductivity, which have become problems that cannot be ignored. The modification methods of three types of commonly used cathode materials are introduced, the main problems faced by each type of cathode materials are discussed, and the research progress of the corresponding modification methods are summarized.
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