期刊
CERAMICS INTERNATIONAL
卷 47, 期 11, 页码 15464-15470出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.02.112
关键词
PEM water Electrolyser; Oxygen evolution reaction; Electrocatalyst support; Tantalum carbide
资金
- NSERC-CREATE Distributed Generation for Remote Communities program at University of Toronto
- CFI/ORF
Tantalum carbide (TaC) is investigated as a potential support for oxygen evolution reaction electrocatalysts, with ball milling resulting in smaller particle size and larger surface area. The ball milled TaC shows good long-term stability under oxygen evolution reaction conditions, with stability up to 5000 cycles and remaining stable over 70 hours of testing.
Tantalum carbide (TaC) is investigated as a potential support for oxygen evolution reaction electrocatalysts. It is ball milled with zirconia balls for 7 and 14 days. The particle size and surface area of the ball milled TaC are analyzed using scanning electron microscopy and nitrogen physisorption methods, respectively. After 14 days of ball milling, the TaC shows smaller particle size and larger surface area compared to after 7 days of ball milling and unmilled TaC. The long-term electrochemical stability of the ball milled TaC is evaluated under oxygen evolution reaction conditions using cyclic voltammetry and chronoamperometry. The ball milled support at a fixed voltage of 1.6 V is shown to be stable up to 5000 cycles. Chronoamperometric measurement also shows the ball milled TaC remains stable over the 70 h of the test.
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