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Strategies and challenges on selective electrochemical hydrogen peroxide production: Catalyst and reaction medium design
Chem Catalysis ( IF 11.5 ) Pub Date : 2022-06-22 , DOI: 10.1016/j.checat.2022.06.002
Meng Dan , Ruyi Zhong , Shangyu Hu , Huixiang Wu , Ying Zhou , Zhao-Qing Liu

Hydrogen peroxide (H2O2), as a valuable fuel and oxidant, has attracted increasing attention in the energy and environmental-related areas. The electrochemical oxygen reduction reaction (ORR) with a prominent 2-electron (2e) pathway has been recognized as a “green” route for the direct synthesis of H2O2 and its on-site utilization. A systematic summary on rational design of catalyst systems (i.e., the catalyst and the reaction medium) for selective electrochemical H2O2 production is still lacking, which is critical for advancing this burgeoning field. Here, fundamental knowledge of electrochemical H2O2-related reactions including the reaction mechanism and the performance (activity, selectivity, and stability) descriptors is introduced in the beginning of this review. Afterward, the cutting-edge electrocatalyst and reaction medium (i.e., electrolyte) design strategies for H2O2 generation via 2e ORR pathway are reviewed, with a special emphasis on selectivity regulation. Finally, critical perspectives are presented on the challenges and opportunities on the selective electrochemical H2O2 production.



中文翻译:

选择性电化学过氧化氢生产的策略和挑战:催化剂和反应介质设计

过氧化氢(H 2 O 2)作为一种有价值的燃料和氧化剂,在能源和环境相关领域引起了越来越多的关注。具有突出的 2 电子 (2e - ) 途径的电化学氧还原反应 (ORR) 已被认为是直接合成 H 2 O 2及其现场利用的“绿色”途径。仍然缺乏对选择性电化学 H 2 O 2生产的催化剂系统(即催化剂和反应介质)的合理设计的系统总结,这对于推进这一新兴领域至关重要。这里,电化学H 2 O 2的基础知识相关反应,包括反应机理和性能(活性、选择性和稳定性)描述符在本综述的开头进行了介绍。随后,回顾了通过 2e - ORR 途径产生 H 2 O 2的尖端电催化剂和反应介质(即电解质)设计策略,特别强调选择性调节。最后,对选择性电化学 H 2 O 2生产的挑战和机遇提出了批判性观点。

更新日期:2022-06-22
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