Concentration Gradient Pd-Ir-Ni/C Electrocatalyst with Enhanced Activity and Methanol Tolerance for Oxygen Reduction Reaction in Acidic Medium
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- 作者：Esubalew Meku ; Chunyu Du ; cydu@hit.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Yajing Wang ; Lei Du ; Yongrong Sun ; Fanpeng Kong ; Geping Yin
- 关键词：Electrocatalyst ; oxygen reduction reaction ; concentration gradient core-shell ; palladium-iridium-nickel ; methanol tolerance
- 刊名：Electrochimica Acta
- 出版年：2016
- 出版时间：20 February 2016
- 年：2016
- 卷：192
- 期：Complete
- 页码：177-187
- 全文大小：2518 K
文摘
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A concentration gradient core-shell Pd-Ir-Ni/C electrocatalyst is facilely synthesized.
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The Pd-Ir-Ni/C catalyst exhibits high activity for oxygen reduction reaction (ORR).
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This catalyst possesses excellent ORR selectivity in the presence of methanol.
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The enhanced ORR activity is ascribed to the optimal compressive lattice strain.
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The underlying alloy core induces the lattice strain on the outer surface.