Structure and electrochemical properties of layered sodium manganese oxide NaxMnO2

被引：7

作者：

Lin, Zhiping ^{[1
]}

Zhao, Siliang ^{[2
]}

Wu, Fugen ^{[2
]}

机构：

[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510090, Guangdong, Peoples R China

[2] Guangdong Univ Technol, Sch Mat & Energy, Guangzhou 510090, Guangdong, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 09期

关键词：

Na-ion batteries; Na0.808MnO2-delta; electrochemical properties; defect structure; INITIO MOLECULAR-DYNAMICS; CATHODE MATERIAL; PERFORMANCE; DEINTERCALATION; TRANSITION;

D O I：

10.1088/2053-1591/ab2e4e

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Layered Na0.808MnO2-delta were prepared by solid state method under oxygen environment. The Rietveld refinement result showed that lattice parameters are a = 2.8653 angstrom, c = 11.0987 angstrom with space group P63/mmc. There were some vacancies in Na site and O site, and the Na vacancy is more easily formed in the Nal(2b) site by first-principles calculation. The electrochemical measurement shows reversible de/intercalation of about 0.4Na ion so as to deliver a discharge capacity of 103 mAhg(-1) in the potential range of 2.0-3.6 V. By comparison of theory and experiment, some Na vacancies is favor to improving the cycle performance of sodium ion battery.

引用

页数：6

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