Two-step pyrolysis of ZIF-8 functionalized with ammonium ferric citrate for efficient oxygen reduction reaction |
| |
| Institution: | 1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China |
| |
| Abstract: | Zeolitic imidazolate frameworks(ZIFs) are widely employed in catalyst synthesis as parental materials for electrochemical energy storage and conversion. Herein, we have demonstrated a facile synthesis of highly efficient catalyst for oxygen reduction reaction in both alkaline and acidic medium, which is derived from ZIF-8 functionalized with ammonium ferric citrate via two-step pyrolysis in Ar and NH_3 atmosphere.The results reveal that the catalytic activity improvement after NH3 pyrolysis benefits from mesoporedominated morphology and high utilization of Fe-containing active sites. The optimum catalyst shows excellent performance in zinc-air battery and polymer electrolyte membrane fuel cell tests. |
| |
| Keywords: | |
| 本文献已被 CNKI ScienceDirect 等数据库收录！ |
|
