高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (4): 661.

• 研究论文 • 上一篇    下一篇

In-Situ Raman光谱研究MCFC中NiO阴极溶解破坏机理

陈丽江1, 程璇1, 林昌健1, 黄朝明2   

  1. 1. 厦门大学化学系, 材料科学与工程系, 固体表面物理化学国家重点实验室, 厦门 361005;
    2. 美国能源研究公司, Connecticut, 06813, USA
  • 收稿日期:2000-11-10 出版日期:2002-04-24 发布日期:2002-04-24
  • 通讯作者: 林昌健(1951年出生),男,博士,教授,博士生导师,主要从事材料电化学研究.E-mail:cjlin@xmu.edu.cn E-mail:cjlin@xmu.edu.cn
  • 基金资助:

    国家杰出青年科学基金(批准号:59525102)资助.

Investigations on Dissolution Mechanism of the NiO Cathode Materialsin MCFC by In-situ Raman Spectroscopy

CHEN Li-Jiang1, CHENG Xuan1, LIN Chang-Jian1, HUANG Chao-Ming2   

  1. 1. Department of Chemistry, Department of Materials Science and Engineering, State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China;
    2. Energy Research Corporation, Connecticut 06831, USA
  • Received:2000-11-10 Online:2002-04-24 Published:2002-04-24

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摘要： 采用一种新的原位Raman光谱技术对CO2在熔融碳酸盐燃料电池中的NiO阴极的溶解过程中的微观作用进行初步研究。结果表明,CO2气体极易吸附于NiO阴极的表面,在含氧气氛及熔融碳酸盐的条件下,吸附的CO2与活化态O2相互作用形成碳酸根,并进入熔盐电解质。NiO表面的脱附态CO2也可与NiO中的晶格氧作用,导致NiO的溶解破坏。

关键词: 熔融碳酸盐燃料电池, NiO阴极, 溶解破坏, 二氧化碳, 原位Raman光谱

Abstract: The investigation of dissolution and degradation mechanism of NiOcathode in Molten CarbonateFuel Cell (MCFC) has recently attracted considerable attention.In this work a novel in-situ Raman spec-troscopic technique were developed to study the CO2 microscopic action in the dissolution of NiO.The re-sults indicate that CO2 tend to adsorb on the surface of NiO, and the adsorbing CO2 is prone to being des-orbed in molten carbonate under O2 contained atmosphere, due to the strong reaction between the adsorded CO2 and active O2 on the NiOsurface.

Key words: MCFC, NiO cathode, Dissolution and degradation, CO2, In-situ Raman spectroscopy

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