Herein, we report a facile synthesis method that stabilizes atomic Pd species on the reduced graphene oxide/N-doped carbon hollow carbon nanospheres (Pd1/N-C). Pd1/N-C exhibited remarkable electrochemical H2O2 production rate with high faradaic efficiency, reaching 80%. The single-atom structure and its high H2O2 production rate were maintained even after 10,000 cycle stability test. The existence of single-atom Pd as well as its coordination with N species is responsible for its high activity, selectivity, and stability. The N coordination number and substrate doping around Pd atoms are found to be critical for an optimized adsorption energy of intermediate *OOH, resulting in efficient electrochemical H2O2 production.
Jiangbo Xi, Sungeun Yang, Luca Silvioli, Sufeng Cao, Pei Liu, Qiongyang Chen, Yanyan Zhao, Hongyu Sun, Johannes Novak Hansen, Jens-Peter B.Haraldsted, Jakob Kibsgaard. Jan, Rossmeisl, Sara Bals, Shuai Wang, Ib Chorkendorff
Journal of Catalysis, Volume 393, January 2021, Pages 313-323
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