Cobalt-free nanofiber cathodes for proton conducting solid oxide fuel cells

Haidi Tang; Zongzi Jin; Yusen Wu; Wei Liu; Lei Bi

Electrochemistry Communications (Mar 2019)

Cobalt-free nanofiber cathodes for proton conducting solid oxide fuel cells

Haidi Tang,
Zongzi Jin,
Yusen Wu,
Wei Liu,
Lei Bi

Affiliations

Haidi Tang: CAS Key Laboratory of Materials for Energy Conversion & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei 230026, China
Zongzi Jin: CAS Key Laboratory of Materials for Energy Conversion & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei 230026, China
Yusen Wu: CAS Key Laboratory of Materials for Energy Conversion & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei 230026, China
Wei Liu: CAS Key Laboratory of Materials for Energy Conversion & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China; Correspondence to: W. Liu, CAS Key Laboratory of Materials for Energy Conversion & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei 230026, China.
Lei Bi: Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Ningxia Road No.308, Qingdao 266071, China; Corresponding author.

Journal volume & issue: Vol. 100
pp. 108 – 112

Abstract

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Nanofiber-structured La2NiO4+δ (LNO) and LaNi0.6Fe0.4O3-δ (LNF) cathodes, which were fabricated by an electrospinning technique, were used for proton-conducting solid oxide fuel cells (H-SOFCs) for the first time, aiming to develop high-performance cobalt-free cathodes for H-SOFCs. High porosity and large specific surface area of LNO, LNF nanofiber-structured cathodes were beneficial for the cathode reactions, resulting in an encouraging peak power density of 508 mWcm−2 and 551 mWcm−2 for LNO and LNF cathode cell at 700 °C, respectively. The nanofiber-structured cathodes showed a higher fuel cell performance and lower polarization resistance compared with that of the cell using corresponding powder cathode, suggesting the construction of nanofiber-structured cathode provided an alternative and promising route to prepare high performance cathodes for H-SOFCs. Keywords: Proton conductor, Cobalt-free cathode, Nanofiber, Solid oxide fuel cells

Published in Electrochemistry Communications

ISSN: 1388-2481 (Print); 1873-1902 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Industrial electrochemistry; Science: Chemistry
Website: https://www.journals.elsevier.com/electrochemistry-communications

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