钴氰化钠/氯化钠固体溶液微晶体的电化学制备及其特性

doi:10.13208/j.electrochem.140320

电化学（中英文） ›› 2014, Vol. 20 ›› Issue (3): 197-200. doi: 10.13208/j.electrochem.140320

• 研究快讯 • 下一篇

钴氰化钠/氯化钠固体溶液微晶体的电化学制备及其特性

朱益亮，杨德志，苏亚琼，吴德印，田中群，詹东平^*

厦门大学固体表面物理化学国家重点实验室，化学化工学院化学系，福建厦门 361005

收稿日期:2014-03-20 修回日期:2014-03-28 出版日期:2014-06-28 发布日期:2014-04-05
通讯作者: 詹东平 E-mail:dpzhan@xmu.edu.cn
基金资助:
国家自然科学基金项目（Nos. 21327002，91323303，21321062，20973142，21061120456）资助

Microfabrication and Redox Properties of the Single Microcrystal of Na₃Co(CN)₆/NaCl Solid Solution

ZHU Yi-liang, YANG De-zhi, SU Ya-qiong, WU De-yin, TIAN Zhong-qun, ZHAN Dong-ping^*

State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China

Received:2014-03-20 Revised:2014-03-28 Published:2014-06-28 Online:2014-04-05
Contact: ZHAN Dong-ping E-mail:dpzhan@xmu.edu.cn

摘要/Abstract

摘要： 钴氰化钠与铁氰化钠结构类似，而其在固/液界面上的电子转移特性却并不显著. 使用扫描电化学显微镜（SECM）构建了fL~pL体积的电化学微体系. 在微体系中溶剂蒸发，电解质则会浓缩结晶. 当电活性物质与支持电解质的晶格参数匹配时，二者可发生共结晶形成固体溶液. 本文采用该方法制得钴氰化钠/氯化钠固体溶液微晶体，结合微加工技术构建了固体电极/固体溶液界面，该钴氰化钠在固体溶液中即有很好的电子转移特性.

关键词: 固体溶液, 固/固界面, 电化学微体系, 扫描电化学显微镜

Abstract: Although the molecular structures are similar to each other, the redox property of Co(CN)₆^3- at solid/liquid interface is not so good as Fe(CN)₆^3-. In this paper, scanning electrochemical microscopy (SECM) was adopted to construct an electrochemical microsystem with a volume of fL~pL, in which a micropipette with micrometer-sized orifice was employed as the scanning tip. Due to the evaporation of water, the NaCl electrolyte is concentrated to form a microcrystal. During the crystallization, the redox species Co(CN)₆^3- replaced the sites of NaCl₆^5- unit due to their matching lattice parameters, i.e., the solid solution. Single Na₃Co(CN)₆/NaCl microcrystal was assembled in-situ between a pair of gold microelectrodes on a microchip to construct the solid/solid interface, which was found to have good voltammetric behavior.

Key words: solid solution, solid/solid interface, electrochemical microsystem, scanning electrochemical microscopy

中图分类号:

O646

朱益亮，杨德志，苏亚琼，吴德印，田中群，詹东平*. 钴氰化钠/氯化钠固体溶液微晶体的电化学制备及其特性[J]. 电化学（中英文）, 2014, 20(3): 197-200.

ZHU Yi-liang, YANG De-zhi, SU Ya-qiong, WU De-yin, TIAN Zhong-qun, ZHAN Dong-ping*. Microfabrication and Redox Properties of the Single Microcrystal of Na₃Co(CN)₆/NaCl Solid Solution[J]. Journal of Electrochemistry, 2014, 20(3): 197-200.

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https://electrochem.xmu.edu.cn/CN/Y2014/V20/I3/197

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