3D ordered mesoporous cobalt ferrite phosphides for overall water splitting
3D ordered mesoporous cobalt ferrite phosphides for overall water splitting
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用于整体水分解的 3D 有序介孔钴铁氧体磷化物
DOI：
10.1007/s40843-019-1171-3
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发表时间：
2020-02-01
影响因子：
8.1
通讯作者：
Hao, Sue
中科院分区：
文献类型：
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作者：
Huang, Yarong;Li, Menggang;Hao, Sue
开发低成本、地球资源丰富、高性能的电化学水分解电催化剂是一个具有挑战性的问题。在此，我们报道了一种简单有效的方法来制备三维（3D）有序介孔Co 1-xFexp（x=0，0.25，0.5，0.75）电催化剂。得益于三维有序介孔孔道和组成优化，Co 0. 75 Fe 0. 25 P在碱性电解液中表现出优异的电催化活性，沿着具有持久的电化学稳定性，在10 mA cm（-2）下，其析氧反应（OER）和析氢反应（HER）的过电位分别为270和209 mV.此外，Co 0.75 Fe 0.25 P作为阴极和阳极，在1.63 V电压下，电流密度为10 mA cm（-2），电解18 h后无明显衰减，表现出良好的上级电解水性能，是一种高效的电解水催化剂。
Developing low-cost and earth-abundant electrocatalysts with high performance for electrochemical water splitting is a challenging issue. Herein, we report a facile and effective way to fabricate three-dimension (3D) ordered mesoporous Co1-xFexP (x=0, 0.25, 0.5, 0.75) electrocatalyst. Benefiting from 3D ordered mesoporous pore channels and composition optimization, the Co0.75Fe0.25P exhibits excellent electrocatalytic activities with low overpotentials of 270 and 209 mV at 10 mA cm(-2) for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively, in the alkaline electrolyte along with a durable electrochemical stability. In addition, as both the cathode and anode, the Co0.75Fe0.25P also exhibits superior electrolysis water splitting performance with only an applied voltage of 1.63 V to attain a current density of 10 mA cm(-2) without obvious decay for 18 h, indicating that the Co0.75Fe0.25P is an efficient electrocatalyst for overall water splitting.