| Literature DB >> 27305627 |
Shouding Li, Jianghuai Guo, Zhuo Ye1, Xin Zhao1, Shunqing Wu, Jin-Xiao Mi, Cai-Zhuang Wang1, Zhengliang Gong, Matthew J McDonald, Zizhong Zhu, Kai-Ming Ho1,2, Yong Yang.
Abstract
A new cubic polymorph of sodium iron silicate, Na2FeSiO4, is reported for the first time as a cathode material for Na-ion batteries. It adopts an unprecedented cubic rigid tetrahedral open framework structure, i.e., F4̅3m, leading to a polyanion cathode material without apparent cell volume change during the charge/discharge processes. This cathode shows a reversible capacity of 106 mAh g(-1) and a capacity retention of 96% at 5 mA g(-1) after 20 cycles.Entities:
Keywords: Na2FeSiO4; cathode; nanocrystallites; sodium ion batteries; zero-strain
Year: 2016 PMID： 27305627 DOI： 10.1021/acsami.6b03969
Source DB: PubMed Journal: ACS Appl Mater Interfaces ISSN： 1944-8244 Impact factor: 9.229