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

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (4): 661.

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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. 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

Abstract

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

CLC Number:

O657.37

TrendMD:

CHEN Li-Jiang, CHENG Xuan, LIN Chang-Jian, HUANG Chao-Ming. Investigations on Dissolution Mechanism of the NiO Cathode Materialsin MCFC by In-situ Raman Spectroscopy[J]. Chem. J. Chinese Universities, 2002, 23(4): 661.

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

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