沉积温度对等离子喷涂金属支撑型固体氧化物燃料电池结构及电化学性能的影响

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Abstract This research aims to improve the output performance of the metal-supported solid oxide fuel cell prepared by atmospheric plasma spraying (APS). Specifically, solid oxide fuel cells based on scandia doped zirconia (ScSZ) electrolytes were deposited on stainless-steel substrates by APS. The deposition temperature during spraying was controlled to be 100 ℃, 300 ℃ and 600 ℃, respectively. The deposition states of individual ScSZ particle and the microstructures of ScSZ coatings were characterized by a scanning electron microscopy (SEM). The output performance and AC impedance spectrum of the single-cell were tested by an electrochemical workstation. The results show that with the increase of deposition temperature, ScSZ particles changed from sputtering to disc-shaped spread. The density of cracks in a single particle gradually decreased, and the area ratio of cracks reduced from 9.75% to 5.73%. After assembling into single cells, the electrolytes were well combined with the anode and cathode. In addition, the interlamellar bonding in the ScSZ coating was improved with the increasing deposition temperature. Both sizes of cracks and pores were reduced, and the porosity of the coating decreased from 12.29% to 7.72%. The electrochemical test results showed that as the deposition temperature increased from 100 ℃ to 600 ℃, the ohmic resistance of the electrolyte was reduced by half, and the output performance of the cell was significantly improved. The maximum power density and the ohmic impedance of the single-cell prepared on the substrate at 600 ℃ were 0.998 W/cm² and 0.076 Ω·cm² at 800 ℃, respectively.

Key words： metal-supported solid oxide fuel cell atmospheric plasma spraying deposition temperature scandia doped zirconia electrolyte coating

Published: 05 June 2022 Online: 2022-06-08

CLC number:

TK91

Fund:Guangdong Basic and Applied Basic Research Foundation (2022A1515010682, 2021A1515110260), Guangzhou Science and Technology Project (202007020008), and Guangdong Special Support Program (2019BT02C629).

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	Articles by authors
	CHEN Dan
	SONG Chen
	DU Ke
	GUO Yu
	LIU Zhiyi
	LIU Taikai
	LIU Min

Cite this article:

CHEN Dan,SONG Chen,DU Ke, et al. Influence of Deposition Temperature on Structural and Electrochemical Performance of Plasma-sprayed Metal-supported Solid Oxide Fuel Cell[J]. Materials Reports, 2022, 36(Z1): 22030119-5.

URL:

http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2022/V36/IZ1/22030119

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