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研究快讯

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
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  • 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

  网络出版日期: 2014-04-05

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
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  • 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 date: 2014-03-20

  Revised date: 2014-03-28

  Online published: 2014-04-05

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.

本文引用格式

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, 2014 , 20(3) : 197 -200 . DOI: 10.13208/j.electrochem.140320

Abstract

Although the molecular structures are similar to each other, the redox property of Co(CN)63- at solid/liquid interface is not so good as Fe(CN)63-. 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)63- replaced the sites of NaCl65- 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.
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