层状二氧化锰的离子注入改性及其电化学性能的研究

电化学（中英文） ›› 2007, Vol. 13 ›› Issue (4): 436-440.

层状二氧化锰的离子注入改性及其电化学性能的研究

黄河宁;吕东平;黄行康;张启卫;杨勇;

三明学院化学与生物工程系,厦门大学固体表面物理化学国家重点实验室厦门大学化学系,厦门大学固体表面物理化学国家重点实验室厦门大学化学系,三明学院化学与生物工程系,厦门大学固体表面物理化学国家重点实验室厦门大学化学系福建三明365004,厦门大学固体表面物理化学国家重点实验室,厦门大学化学系,福建厦门361005,福建厦门361005,福建厦门361005,福建三明365004,福建厦门361005

收稿日期:2007-11-28 修回日期:2007-11-28 出版日期:2007-11-28 发布日期:2007-11-28

Ion-implanting Modification of Layered Manganese Dioxide and Its Electrochemical Performance

HUANG He-ning1,2,Lü Dong-ping2,HUANG Xing-kang2,ZHANG Qi-wei1,YANG Yong2

(1.Department of Chemical and Biological Engineering,Collage of Sanming,Sanming 365004,Fujian,China,2.State Key Lab for Physical Chemistry of solid Surface,Department of Chemistry,Xiamen University,Xiamen 361005,Fujian,China

Received:2007-11-28 Revised:2007-11-28 Published:2007-11-28 Online:2007-11-28

摘要/Abstract

摘要： 应用高温热解法合成层状二氧化锰(δ-MnO2),借助离子注入技术在其表层注入钛离子,形成复合材料(δ-MnO2-Ti).材料结构及形貌由XRD、SEM及XPS表征,用恒电流充电仪测定其电化学性能.结果表明:注入钛离子后形成新的复合材料,其MnO2的层状结构没有被破坏,钛离子主要以Ti(Ⅳ)态嵌入MnO2结构.与δ-MnO2相比,改性后的δ-MnO2-Ti首次放电比容量和最大放电比容量均有明显提升.

关键词: 层状二氧化锰, 离子注入改性, 表层结构, 电化学性能

Abstract: Layered MnO2(δ-MnO2) was prepared by thermal decomposition of potassium permanganate.Ti was ion-implanted into such δ-MnO2 by physical techniques,forming a composite(δ-MnO2-Ti).These materials were characterized by XRD,SEM,XPS techniques and their electrochemical proprieties were investigated.The results showed that the layered structure of δ-MnO2 did not been destroyed after Ti ion implantation,and the implanted Ti element was mainly Ti4+ as indicated by XPS.Both of the first and the highest discharge specific capacities of the ion-implanted layered MnO2(δ-MnO2-Ti),compared to those of δ-MnO2,were improved significantly.

Key words: layered MnO2, ion implantation, surface structure, electrochemical performance

中图分类号:

O614.711

黄河宁, 吕东平, 黄行康, 张启卫, 杨勇, . 层状二氧化锰的离子注入改性及其电化学性能的研究[J]. 电化学（中英文）, 2007, 13(4): 436-440.

HUANG He-ning, LV Dong-ping, HUANG Xing-kang, ZHANG Qi-wei, YANG Yong. Ion-implanting Modification of Layered Manganese Dioxide and Its Electrochemical Performance[J]. Journal of Electrochemistry, 2007, 13(4): 436-440.

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链接本文: https://electrochem.xmu.edu.cn/CN/

https://electrochem.xmu.edu.cn/CN/Y2007/V13/I4/436

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