Ni-doped A-site-deficient La0.7Sr0.3Cr0.5Mn0.5O3-δ perovskite as anode of direct carbon solid oxide fuel cells

Weizi Cai, Mingyang Zhou, Dan Cao, Xiaomin Yan, Qing Li, Shengping Lü, Caiyun Mao, Yuzhi Li, Yongmin Xie, Caiwen Zhao, Jialing Yu, Meng Ni, Jiang Liu, Hailin Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

A Ni-doped A-site-deficient La0.7Sr0.3Cr0.5Mn0.5O3-δ perovskite (N-LSCM) was synthesized and systematically characterized towards the application as the anode electrode for direct carbon solid oxide fuel cells (DC-SOFCs). The microstructure and electrochemical properties of N-LSCM under the operation conditions of DC-SOFCs have been evaluated. An in-situ exsolution of Ni nanoparticles on the N-LSCM perovskite matrix is found, revealing a maximum power density of 153 mW cm−2 for the corresponding DC-SOFC at 850 °C, compared to 114 mW cm−2 of the cell with stoichiometric LSCM. The introduction of Ni nanoparticles exsolution and A-site deficient is believed to boost the formation of highly mobile oxygen vacancies and electrochemical catalytic activity, and further improves the output performance of the DC-SOFC. It thus promises as a suitable anode candidate for DC-SOFCs with whole-solid-state configuration.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • Anode catalyst
  • Direct carbon solid oxide fuel cell
  • In situ exsolution
  • Strontium and manganese co-doped lanthanum chromites

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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