DataVXACS Applied Materials & InterfacesPaper
journal article·2022-05-18

Interfacial Mn Vacancy for Li-Rich Mn-Based Oxide Cathodes

Youchen Hao, Xifei Li, Wen Liu, Jingjing Wang, Hui Shan, Wenbin Li, Xianyou Wang

ACS Applied Materials & Interfaces· Volume 14· Issue 19
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Source abstract

Abstract

Apart from the O releasing at a low rate, large polarization at a high rate is also a big challenge for Li-rich Mn-based oxide (LMO). Prussian blue (PB) with a specific redox potential is regarded as a suitable coating layer to overcome these drawbacks, while its stability is easily destroyed by the intrinsic Jahn–Teller effect after a long run. Herein, Mn vacancy (MV) is introduced into the PB coating layer to enhance its stability. Consequently, such an electrode (MV-PB@LMO) presents a prolonged lifespan compared to the electrode with a PB coating layer only. Furthermore, it is found that the electrode with Mn vacancy in LMO (MV@LMO) shows superior reversibility, which displays a boosted activity of LMO. This research exhibits the advanced merits of Mn vacancy for LMO, and further work may pay more attention to strengthening of the stability of MV@LMO.
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Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, Xi’an Key Laboratory of New Energy Materials and Devices, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China

Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Shaanxi Province · Natural science basic research plan in Shaanxi province · Xi?an Science and Technology Project

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