Challenges and Modification Strategies of Ni-Rich Cathode Materials Operating at High-Voltage

Challenges and Modification Strategies of Ni-Rich Cathode Materials Operating at High-Voltage

作者:

Liao, CJ (Liao, Caijian) [1] ; Li, FK (Li, Fangkun) [1] ; Liu, J (Liu, Jun) [1]

查看 Web of Science ResearcherID 和 ORCID (由 Clarivate 提供) NANOMATERIALS

卷12

期11

文献号1888

DOI10.3390/nano12111888

出版时间JUN 2022

已索引2022-06-17

文献类型Review

摘要

Ni-rich cathode materials have become promising candidates for lithium-based automotive batteries due to the obvious advantage of electrochemical performance. Increasing the operating voltage is an effective means to obtain a higher specific capacity, which also helps to achieve the goal of high energy density (capacity x voltage) of power lithium-ion batteries (LIBs). However, under high operating voltage, surface degradation will occur between Ni-rich cathode materials and the electrolytes, forming a solid interface film with high resistance, releasing O-2, CO2 and other gases. Ni-rich cathode materials have serious cation mixing, resulting in an adverse phase transition. In addition, the high working voltage will cause microcracks, leading to contact failure and repeated surface reactions. In order to solve the above problems, researchers have proposed many modification methods to deal with the decline of electrochemical performance for Ni-rich cathode materials under high voltage such as element doping, surface coating, single-crystal fabrication, structural design and multifunctional electrolyte additives. This review mainly introduces the challenges and modification strategies for Ni-rich cathode materials under high voltage operation. The future application and development trend of Ni-rich cathode materials for high specific energy LIBs are projected.

关键词

作者关键词Ni-rich cathode materialshigh voltagesurface degradationmicrocrackmodification

Keywords PlusLITHIUM-ION BATTERIESPOSITIVE-ELECTRODE MATERIALSTRANSITION-METAL OXIDEHIGH-ENERGYLAYERED CATHODEELECTROCHEMICAL PERFORMANCECYCLING PERFORMANCETHERMAL-STABILITYCHEMOMECHANICAL INTERPLAYRATE CAPABILITY

作者信息

通讯作者地址

Liu, Jun

(通讯作者)

South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China

地址

1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China

电子邮件地址202120121261@mail.scut.edu.cn202110184208@mail.scut.edu.cnmsjliu@scut.edu.cn

类别/分类

研究方向ChemistryScience & Technology - Other TopicsMaterials SciencePhysics