Hyperporous-Carbon-Supported Nonprecious Metal Electrocatalysts for the Oxygen Reduction Reaction
Hyperporous-Carbon-Supported Nonprecious Metal Electrocatalysts for the Oxygen Reduction Reaction
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用于氧还原反应的超多孔碳负载非贵金属电催化剂
DOI：
10.1002/asia.201800747
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发表时间：
2018
影响因子：
4.1
通讯作者：
Chun Zhang
中科院分区：
文献类型：
--
作者：
Tian Long Zhai;Cuijuan Xuan;Jincheng Xu;Li Ban;Zhiming Cheng;Shaolei Wang;Deli Wang;Bien Tan;Chun Zhang
用于氧还原反应的高度多孔碳质非贵金属催化剂通过低成本金属卟啉基超交联聚合物（MPH-X）的碳化来制备。所获得的超多孔碳MPH-Fe/C催化剂具有高表面积（2768 m2 g-1）、分级多孔结构和高金属负载量（9.97重量%），表现出高氧还原反应（ORR）活性，半波电位（0.816 V）与商业Pt/C的0.819 V相当。 稳定性测试表明，MPH-Fe/C还具有出色的长期耐久性和甲醇耐受性。我们的研究结果可能提供一种替代方法来大规模生产非贵金属ORR催化剂，因为具有不同金属类型的低成本MPH-X前体。
Highly porous carbonaceous nonprecious metal catalysts for the oxygen reduction reaction are prepared by carbonization of low‐cost metalloporphyrin‐based hyper‐crosslinked polymers (MPH‐X). With high surface area (2768 m2g−1), hierarchical porous structure, and high metal loading (9.97 wt %), the obtained hyperporous carbon MPH‐Fe/C catalyst exhibits high oxygen reduction reaction (ORR) activity with a half‐wave potential (0.816 V) that is comparable to the 0.819 V of commercial Pt/C. Stability tests reveal that MPH‐Fe/C also exhibits outstanding long‐term durability and methanol tolerance. Our findings may offer an alternative approach to produce nonprecious metal ORR catalysts on a large scale owing to the low‐cost MPH‐X precursors with diverse metal types.