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Advanced fuel cell based on Perovskite La-SrTiO3 semiconductor as the electrolyte with superoxide-ion conduction

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journal contribution
posted on 07.09.2018, 13:10 by Gang Chen, Bin Zhu, Hui Deng, Yadan Luo, Wenkang Sun, Hailiang Liu, Wei [Hubei University] Zhang, Xunying Wang, Yumin Qian, Xianwei Hu, Shujiang Geng, Jung-Sik Kim
A solid oxide fuel cell’s (SOFC) performance is largely determined by the ionic-conducting electrolyte. A novel approach is presented for using the semiconductor perovskite LaR0.25RSrR0.75RTiOR3R (LST) as the electrolyte by creating surface superionic conduction, and the authors show that the LST electrolyte can deliver superior power density, 908.2 mW·cmP-2P at just 550 °C. The prepared LST materials formed a heterostructure including an insulating core and a super ionic conducting surface layer. The rapid ion transport along the surfaces or grain boundaries was identified as the primary means of oxygen ion conduction. The fuel cell-induced phase transition was observed from the insulating LST to a super OP2-P conductivity of 0.221 S·cmP-1P at 550 °C, leading to excellent current and power outputs.

Funding

The authors thank the National Natural Science Foundation of China (No. 51302033), the Fundamental Research Funds for the Central Universities (No. N172504025), the Natural Science Foundation of Liaoning and Hubei Province (No. 2015020637 and 2015CFA120), the Swedish Research Council (Grant No. 621-2011-4983), and the European Commission FP7 TriSOFC-project (Grant No. 303454) for the financial support.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

ACS Applied Materials and Interfaces

Citation

CHEN, G. ... et al., 2018. Advanced fuel cell based on Perovskite La-SrTiO3 semiconductor as the electrolyte with superoxide-ion conduction. ACS Applied Materials and Interfaces, 10 (39), pp.33179–33186.

Publisher

© American Chemical Society

Version

AM (Accepted Manuscript)

Publisher statement

This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsami.8b10087.

Acceptance date

21/08/2018

Publication date

2018-09-10

ISSN

1944-8252

Language

en

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