Activating a Multielectron Reaction of NASICON-Structured Cathodes toward High Energy Density for Sodium-Ion Batteries

Mingzhe Chen, Weibo Hua, Jin Xiao, Jiliang Zhang, Vincent Wing Hei Lau, Mihui Park, Gi Hyeok Lee, Suwon Lee, Wanlin Wang, Jian Peng, Liang Fang, Limin Zhou, Chung Kai Chang, Yusuke Yamauchi, Shulei Chou, Yong Mook Kang

研究成果: Article同行評審

29 引文 斯高帕斯(Scopus)

摘要

The increasing demand to efficiently store and utilize the electricity from renewable energy resources in a sustainable way has boosted the request for sodium-ion battery technology due to the high abundance of sodium sources worldwide. Na superionic conductor (NASICON) structured cathodes with a robust polyanionic framework have been intriguing because of their open 3D structure and superior thermal stability. The ever-increasing demand for higher energy densities with NASICON-structured cathodes motivates us to activate multielectron reactions, thus utilizing the third sodium ion toward higher voltage and larger capacity, both of which have been the bottlenecks for commercializing sodium-ion batteries. A doping strategy with Cr inspired by first-principles calculations enables the activation of multielectron redox reactions of the redox couples V2+/V3+, V3+/V4+, and V4+/V5+, resulting in remarkably improved energy density even in comparison to the layer structured oxides and Prussian blue analogues. This work also comprehensively clarifies the role of the Cr dopant during sodium storage and the valence electron transition process of both V and Cr. Our findings highlight the importance of a broadly applicable doping strategy for achieving multielectron reactions of NASICON-type cathodes with higher energy densities in sodium-ion batteries.

原文English
頁(從 - 到)18091-18102
頁數12
期刊Journal of the American Chemical Society
143
發行號43
DOIs
出版狀態Published - 2021 11月 3

All Science Journal Classification (ASJC) codes

  • 催化
  • 化學 (全部)
  • 生物化學
  • 膠體和表面化學

指紋

深入研究「Activating a Multielectron Reaction of NASICON-Structured Cathodes toward High Energy Density for Sodium-Ion Batteries」主題。共同形成了獨特的指紋。

引用此