Recent advances in electrochemical 2e oxygen reduction reaction for on-site hydrogen peroxide production and beyond.
Recent advances in electrochemical 2e oxygen reduction reaction for on-site hydrogen peroxide production and beyond.
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DOI：
10.1039/d0cc05156j
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发表时间：
2020-09
影响因子：
4.9
通讯作者：
Kun Wang;Jianhao Huang;Haixin Chen;Yi Wang;Shuqin Song
中科院分区：
文献类型：
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作者：
Kun Wang;Jianhao Huang;Haixin Chen;Yi Wang;Shuqin Song
通过2e氧还原反应（ORR）电制备H2O2作为传统蒽醌法的替代策略具有高能效和环境友好性。近年来，各种具有高选择性、高活性和高稳定性的电催化剂相继被报道，它们是整个过氧化氢电制备过程的重要组成部分。本文阐述了氧化还原反应的机理，介绍了通过理论计算和实验验证筛选潜在电催化剂的方法。此外，最近的进展，反应器设计的大规模现场生产过氧化氢和集成系统的电力，过氧化氢联产提到。通过理想的电催化剂和合理的反应器设计，可以根据实际应用获得不同浓度的H2O2。利用太阳能或化学能，可以提高能源效率和过程的可持续性。最后，我们对电催化剂、器件设计以及集成系统的最新发展做了简要的总结，并对未来的研究挑战进行了展望，这对推进电化学现场生产H2O2通过2e ORR推向市场具有重要意义。
The electroproduction of H2O2 through 2e oxygen reduction reaction (ORR) as an alternative strategy for the conventional anthraquinone process is highly energy-efficient and environment-friendly. Different kinds of electrocatalysts with high selectivity, activity, and stability have been recently reported, and are an essential part of the whole electroproduction process of H2O2. In this review, we expound the ORR mechanism and introduce some methods to screen out potential electrocatalysts through theoretical calculations and experimental verifications. In addition, recent advances in reactor design for large-scale on-site production of H2O2 and integrated systems for electricity-H2O2 co-generation are mentioned. With ideal electrocatalysts and rational reactor design, different concentrations of H2O2 can be obtained depending on the practical applications. Utilizing the solar or chemical energy, it can promote energy efficiency and sustainability of the process. Finally, we make a brief conclusion about recent developments in electrocatalysts, device design, as well as integrated systems, and give an outlook for future research challenges, which are meaningful for advancing the electrochemical on-site production of H2O2 via 2e ORR to the marketplace.