02-jechem-2021-review

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Abstract chars: 988

Li and Mn rich (LMR) layered oxides, written as x Li2MnO3 
 (1  x )LiMO2 (M = Mn, Ni, Co, Fe, etc.), have been widely reported in recent years due to their high capacity and high energy density. The stable structure and superior performance of LMR oxides make them one of the most promising candidates for the next-generation cathode materials. However, the commercialization of these materials is hindered by several drawbacks, such as low initial Coulombic efficiency, the degradation of voltage and capacity during cycling, and poor rate performance. This review summarizes research progress in solving these concerns of LMR cathodes over the past decade by following three classes of strategies: morphology design, bulk design, and surface modification. We elaborate on the processing procedures, electrochemical performance, mechanisms, and limitations of each approach, and finally put forward the concerns left and the possible solutions for the commercialization of LMR cathodes.

Sections

• 1. Introduction (4019 chars)
• 2.1. Crystal structure of LMR oxides (3454 chars)
• 2.2. Electrochemical performance of LMR cathodes (9012 chars)
• 3. Recent progress on promoting the electrochemical performance of LMR cathodes (400 chars)
• 3.1. Morphology design (6302 chars)
• Li, Z. Li, C. Chen et al (651 chars)
• 3.2. Bulk design (199 chars)
• 3.2.1. Structure design (5508 chars)
• 3.2.2. Bulk doping (4041 chars)
• 3.3. Surface modification (172 chars)
• 3.3.1. Surface coating (8589 chars)
• 3.3.2. Surface doping (2840 chars)
• 3.3.3. Other surface treatments (2530 chars)
• 4. Conclusion and perspective (2127 chars)

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• p2 metadata coverage=0.0: Mingjian Zhang got his Ph.D. degree from Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences in 2013, then worked there as an assistant research fellow for one year. From 2014 to 2018, he was a postdoc at School of Advanced Mat
• p2 metadata coverage=0.0: Feng Pan, founding Dean of School of Advanced Mate- rials, Peking University Shenzhen Graduate School, got B.S. from Dept. Chemistry, Peking University in 1985 and Ph.D. from Dept. of P&A Chemistry, University of Strathclyde, Glasgow, UK, with ‘‘Patrick D. Rit
• p16 back_matter coverage=0.0: This work was financially supported by the National Key R&D Program of China (2016YFB0700600), the Soft Science Research Project of Guangdong Province (No. 2017B030301013), and the Shenzhen Science and Technology Research Grant (ZDSYS201707281026184).