Electrocatalyst design for promoting two-electron oxygen reduction reaction: Isolation of active site atoms
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- Electrocatalyst design for promoting two-electron oxygen reduction reaction: Isolation of active site atoms
- Kim, Jae Hyung; Kim, Yong-Tae; Joo, Sang Hoon
- Issue Date
- CURRENT OPINION IN ELECTROCHEMISTRY, v.21, pp.109 - 116
- Selective two-electron (2 e(-)) pathway oxygen reduction reaction (ORR) has gained prominence for enabling small-scale, on-site electrochemical H2O2 production and has emerged as a promising alternative to the conventional anthraquinone process. The rational design of catalysts that can suppress the competing four-electron pathway ORR is critical. This review highlights catalyst design strategies for promoting the selective 2 e(-) pathway ORR, including alloying with inert metals, partial surface poisoning, and generating atomically dispersed sites. The major results and advances, as well as unresolved challenges are summarized.
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