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Tailoring Interphase Structure to Enable High-rate, Durable Sodium-ion Battery Cathode by Na Li; Shaofei Wang; Enyue Zhao; Wen Yin; Zhigang Zhang; Kang Wu; Juping Xu; Yoshihiro Kuroiwa; Zhongbo Hu; Fangwei Wang; Jinkui Zhao; Xiaoling Xiao is a Engineering article available to read on EtoBox.
What is Tailoring Interphase Structure to Enable High-rate, Durable Sodium-ion Battery Cathode about?
Na-based layered transition metal oxides with O3-type structure have been considered to be promising cathodes for Na-ion batteries. However, the intrinsically limited Na-ion conductivity induced by the Otype Na-coordinate environment compromises their rate and cycle capability, hindering their practical application. Here, we report an interphase-structure tailoring strategy that improves the electrochemical properties of O3-type layered cathodes achieved through surface coating and doping processes. Specifically, a Zr-doped interphase structure is designed in the model compound NaNi 1/3 Mn 1/3 Fe 1/3 O 2 using the ionic conductor Na 3 Zr 2 Si 2 PO 12 as the surface coating material and Zr-dopant provider. We discover that the modified NaNi 1/3 Mn 1/3 Fe 1/3 O 2 cathode shows a stable Na-storage structure as well as an enhanced rate/cycle capability. Combined with theoretical calculations, it is suggested that the superior electrochemical performances originate from the Zr-doped interphase structure, which has an enlarged Na layer spacing that forms favorable Na-ion diffusion channels. This work highlights a general material interface optimization method which opens a new perspectiv
Who reads Tailoring Interphase Structure to Enable High-rate, Durable Sodium-ion Battery Cathode?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Na Li; Shaofei Wang; Enyue Zhao; Wen Yin; Zhigang Zhang; Kang Wu; Juping Xu; Yoshihiro Kuroiwa; Zhongbo Hu; Fangwei Wang; Jinkui Zhao; Xiaoling Xiao
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Engineering (Physical Sciences)