journal article·2023-03-27

Preparation of SOFC Anodes at Lower Temperature with Boosted Electrochemical Performance

Zhishan Li, Meilan Peng, Xiaoxin Zhang, Lizhong Zhang, Jianhui Li, Yifei Sun

ACS Applied Energy Materials· Volume 6· Issue 6
Publisher page

Abstract

Various perovskite-type materials have been developed and applied in the field of solid oxide fuel cells (SOFCs). The perovskite oxides prepared by the traditional solid-state method usually need to be calcined at a temperature higher than 1000 °C. Herein, a modified solvothermal synthesis is proposed to prepare the La 0.43 Ca 0.37 Ti 0.94 Ni 0.06 O 3−δ (LCTNi) anode at 800 °C. Compared to the material with identical composition synthesized by the solid-state method (denoted as LCTNi-ss), LCTNi synthesized at the lower temperature possesses smaller particle size, greater specific surface area, higher total conductivity, and better interfacial contact with the electrolyte. The single cell assembled with the LCTNi anode exhibits desirable electrochemical performance using wet H 2 as fuel. The maximum power density is as high as ∼425 mW cm –2 at 800 °C in 3% H 2 O/97% H 2 (∼2.5 times higher than that of the LCTNi-ss anode single cell). The boosted performance is mainly attributed to the facilitated gas diffusion process at the LCTNi anode side.
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Research context

OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Catalysis and Oxidation Reactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Energy, Xiamen University, Xiamen, Fujian 361102, China

Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, Fujian 361005, China

College of Chemistry and Chemical Engineering, Changji University, Changji, Xinjiang 831100, China

National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China

Shenzhen Research Institute of Xiamen University, Shenzhen, Guangdong 518057, China

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China

Funding

Central University Basic Research Fund of China · National Natural Science Foundation of China

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