| Title | Antiperovskite Intermetallic Nanoparticles for Enhanced Oxygen Reduction |
| Authors | Zhang, Hao Xia, Wei Shen, Haoming Guo, Wenhan Liang, Zibin Zhang, Kexin Wu, Yingxiao Zhu, Bingjun Zou, Ruqiang |
| Affiliation | Peking Univ, Beijing Key Lab Theory & Technol Adv Battery Mat, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China |
| Keywords | PEROVSKITE OXIDE BIFUNCTIONAL CATALYST ELECTROCATALYTIC ACTIVITY HIGHLY EFFICIENT POROUS CARBON CO2 REDUCTION ELECTROCHEMISTRY NANOCRYSTALS PERFORMANCE NANOTUBES |
| Issue Date | 27-Jan-2020 |
| Publisher | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION |
| Abstract | Antiperovskite Co3InC0.7N0.3 nanomaterials with highly enhanced oxygen reduction reaction (ORR) performance were prepared by tuning nitrogen contents through a metal-organic framework (MOF)-derived strategy. The nanomaterial surpasses all reported noble-metal-free antiperovskites and even most perovskites in terms of onset potential (0.957 V at J=0.1 mA cm(-2)) and half-wave potential (0.854 V). The OER and zinc-air battery performance demonstrate its multifunctional oxygen catalytic activities. DFT calculation was performed and for the first time, a 4 e(-) dissociative ORR pathway on (200) facets of antiperovskite was revealed. Free energy studies showed that nitrogen substitution could strengthen the OH desorption as well as hydrogenation that accounts for the enhanced ORR performance. This work expands the scope for material design via tailoring the nitrogen contents for optimal reaction free energy and hence performance of the antiperovskite system. |
| URI | http://hdl.handle.net/20.500.11897/584960 |
| ISSN | 1433-7851 |
| DOI | 10.1002/anie.201911943 |
| Indexed | SCI(E) Scopus EI |
| Appears in Collections: | 工学院 先进电池材料料理论与技术北京市重点实验室 |
