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Salen-Based Conjugated Microporous Polymers for Efficient Oxygen Evolution Reaction |
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| Authors: | Wei Zhou Li Yang Fu-Yu Zhou Qi-Wen Deng Xiao Wang Dr. Dong Zhai Dr. Guo-Qing Ren Prof. Dr. Ke-Li Han Prof. Dr. Wei-Qiao Deng Dr. Lei Sun |
| Affiliation: | 1. Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China These authors contributed equally to this work.;2. State Key Laboratory of Molecular Reaction Dynamics, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China University of the Chinese Academy of Sciences, Beijing, 100049 P. R. China These authors contributed equally to this work.;3. Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China;4. Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237 P. R. China State Key Laboratory of Molecular Reaction Dynamics, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China |
| Abstract: | Exploring high-performance electrocatalysts, especially non-noble metal electrocatalysts, for the oxygen evolution reaction (OER) is critical to energy storage and conversion. Herein, we report for the first time that conjugated microporous polymers (CMPs) incorporating salen can be used as OER electrocatalysts with outstanding performances. The best OER electrocatalyst (salen-CMP-Fe-3) exhibits a low Tafel slope of 63 mV dec−1 and an overpotential of 238 mV at 10 mA cm−2. DFT and Grand Canonical Monte Carlo calculations confirmed that the significantly improved electrocatalytic properties can be attributed to the intrinsic catalytic activity of the salen moiety and the enrichment effect of the pore structures. This work demonstrates that salen-based conjugated polymers are a type of metal-coordinated porous polymer that show excellent catalyst performance. |
| Keywords: | electrocatalysis iron ligand effects oxygen evolution reaction polymers |