Volume 18, Issue 3 2103824
Review

Electronic Structure Regulation of Single-Atom Catalysts for Electrochemical Oxygen Reduction to H2O2

Jingjing Liu

Jingjing Liu

State Key Laboratory for Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Centre of the Ministry of Education and College of Chemistry, and Chemical Engineering, Hunan University, Changsha, 410082 China

Search for more papers by this author
Zhichao Gong

Zhichao Gong

State Key Laboratory for Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Centre of the Ministry of Education and College of Chemistry, and Chemical Engineering, Hunan University, Changsha, 410082 China

Search for more papers by this author
Minmin Yan

Minmin Yan

State Key Laboratory for Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Centre of the Ministry of Education and College of Chemistry, and Chemical Engineering, Hunan University, Changsha, 410082 China

Search for more papers by this author
Guanchao He

Guanchao He

State Key Laboratory for Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Centre of the Ministry of Education and College of Chemistry, and Chemical Engineering, Hunan University, Changsha, 410082 China

Search for more papers by this author
Haisheng Gong

Haisheng Gong

State Key Laboratory for Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Centre of the Ministry of Education and College of Chemistry, and Chemical Engineering, Hunan University, Changsha, 410082 China

Search for more papers by this author
Gonglan Ye

Corresponding Author

Gonglan Ye

State Key Laboratory for Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Centre of the Ministry of Education and College of Chemistry, and Chemical Engineering, Hunan University, Changsha, 410082 China

E-mail: [email protected]; [email protected]

Search for more papers by this author
Huilong Fei

Corresponding Author

Huilong Fei

State Key Laboratory for Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Centre of the Ministry of Education and College of Chemistry, and Chemical Engineering, Hunan University, Changsha, 410082 China

E-mail: [email protected]; [email protected]

Search for more papers by this author
First published: 02 November 2021
Citations: 60

Abstract

Electrochemical synthesis of hydrogen peroxide (H2O2) via the 2-electron oxygen reduction reaction (ORR) has emerged as a promising alternative to the energy-intensive anthraquinone process and catalysts combining high selectivity with superior activity are crucial for enhancing the efficiency of H2O2 electrosynthesis. In recent years, single-atom catalysts (SACs) with the merits of maximum atom utilization efficiency, tunable electronic structure, and high mass activity have attracted extensive attention for the selective reduction of O2 to H2O2. Although considerable improvements are made in the performance of SACs toward the 2-electron ORR process, the principles for modulating the catalytic properties of SACs by adjusting the electronic structure remain elusive. In this review, the regulation strategies for optimizing the 2-electron ORR activity and selectivity of SACs by different methods of electronic structure tuning, including the altering of the central metal atoms, the modulation of the coordinated atoms, the substrate effect, and alloy engineering are summarized. Finally, the challenges and future prospects of advanced SACs for H2O2 electrosynthesis via the 2-electron ORR process are proposed.

Conflict of Interest

The authors declare no conflict of interest.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.