Electrochemical and structural studies of LiCo(1/3)Mn(1/3)Fe(1/3)PO(4) as a cathode material for lithium ion batteries

文化大學機構典藏 CCUR > 理工學院 > 工學院 > 化學工程與材料工程學系暨碩士班 > 期刊論文 > Item 987654321/20900

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/20900

题名:	Electrochemical and structural studies of LiCo(1/3)Mn(1/3)Fe(1/3)PO(4) as a cathode material for lithium ion batteries
作者:	Chen, YC (Chen, Yi-Chun) Chen, JM (Chen, Jin-Ming) Hsu, CH (Hsu, Chia-Haw) Lee, JJ (Lee, Jey-Jau) Lin, TC (Lin, Tsung-Chi) Yeh, JW (Yeh, Jien-Wei) Shih, HC (Shih, Han C.)
贡献者:	化材所
关键词:	Olivine structure Synchrotron X-ray diffusivity Lithium multi-transition metal phosphate
日期:	2010-10
上传时间:	2011-12-09 10:30:38 (UTC+8)
摘要:	A solid-state reaction to synthesize a lithium multi-transition metal phosphate LiCo(1/3)Mn(1/3)Fe(1/3)PO(4) is used in this work, which has a high voltage of 3.72 V and capacity of 140 mAh g(-1) at a 0.05 C rate. From the in-situ XRD analysis, LiCo(1/3)Mn(1/3)Fe(1/3)PO(4) has shown a high stability during cell charge/discharge, even operating at 5 V, which is due to the stable olivine structure. Although all the transition metals Co(2+), Mn(2+) and Fe(2+) are at the same 4c site of the LiCo(1/3)Mn(1/3)Fe(1/3)PO(4) structure, they seem to have different chemical activities and reflect on the electrochemical performance. The capacity contributed by the Co(2+)/Co(3+) redox couple is only 20 mAh g(-1), which is less than that of the Fe(2+)/Fe(3+) and Mn(2+)/Mn(3+) redox couples. This is because of the fact that the diffusivity of lithium ion for the Co(2+)/Co(3+) redox couple is 10(-16) cm(2) s(-1) which is one order less than that of the Fe(2+)/Fe(3+) and Mn(2+)/Mn(3+) redox couples in LiCo(1/3)Mn(1/3)Fe(1/3)PO(4). Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
显示于类别:	[化學工程與材料工程學系暨碩士班] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	717	检视/开启

在CCUR中所有的数据项都受到原著作权保护.

数据加载中.....