DataVXACS Energy LettersPaper
journal article·2023-03-10

In Situ Plastic-Crystal-Coated Cathode toward High-Performance Na-Ion Batteries

Haibo Wang, Feixiang Ding, Yuqi Wang, Zhen Han, Rongbin Dang, Hao Yu, Yang Yang, Zhao Chen, Yuqi Li, Fei Xie, Shiguang Zhang, Hongzhou Zhang, Dawei Song, Xiaohui Rong, Lianqi Zhang, Juping Xu, Wen Yin, Yaxiang Lu, Ruijuan Xiao, Dong Su, Liquan Chen, Yong-Sheng Hu

ACS Energy Letters· Volume 8· Issue 3
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Source abstract

Abstract

Cathode materials are critical for Na-ion batteries while facing challenges due to the instability of the structure and interfaces. In this work, we propose a strategy to achieve an in situ plastic-crystal Na 3–3 x Al x PO 4 coating and bulk Al doping for an O3-NaNi 0.4 Fe 0.2 Mn 0.4 O 2 cathode through a simple one-step method. Na 3–3 x Al x PO 4 exhibits high ion transport performance due to its unique “paddle-wheel” mechanism. The in situ formed Na 3–3 x Al x PO 4 could consume the residual alkali compounds and induce the formation of a Na-deficient phase, thus leading to enhanced Na + transport kinetics. Furthermore, strong Al–O bonds formed in the bulk further enhance the crystal structure stability. In a full cell, the capacity retention rate reached 70% after 500 cycles, making its commercial operation possible. Altogether, these results suggest that the in situ plastic-crystal-coating strategy can significantly improve the surface and bulk structure stability of NaNi 0.4 Fe 0.2 Mn 0.4 O 2, thus leading to improved electrochemical performance.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Extraction and Separation Processes

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

Affiliations

School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, People’s Republic of China

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China

Huairou Division, Institute of Physics, Chinese Academy of Sciences, Beijing 101400, People’s Republic of China

College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China

Yangtze River Delta Physics Research Center Co. Ltd, Liyang 213300, People’s Republic of China

Spallation Neutron Source Science Center, Dongguan 523808, People’s Republic of China

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China

Funding

Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Beijing Municipality · Youth Innovation Promotion Association of the Chinese Academy of Sciences · National Natural Science Foundation of China

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