Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7705398 | International Journal of Hydrogen Energy | 2018 | 10 Pages |
Abstract
Design of inexpensive and highly efficient bifunctional electrocatalyst is paramount for overall water splitting. In this study, amorphous Ni-Fe-P alloy was successfully synthesized by one-step direct-current electrodeposition method. The performance of Ni-Fe-P alloy as a bifunctional electrocatalyst toward both hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) was evaluated in 30Â wt% KOH solution. It was found that Ni-Fe-P alloy exhibits excellent HER and OER performances, which delivers a current density of 10Â mAÂ cmâ2 at overpotential of â¼335Â mV for HER and â¼309Â mV for OER with Tafel slopes of 63.7 and 79.4Â mVÂ decâ1, respectively. Moreover, the electrolyzer only needs a cell voltage of â¼1.62Â V to achieve 10Â mAÂ cmâ2 for overall water splitting. The excellent electrocatalytic performance of Ni-Fe-P alloy is attributed to its electrochemically active constituents, amorphous structure, and the conductive Cu Foil.
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Physical Sciences and Engineering
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Authors
Jiqiong Lian, Yihui Wu, Houan Zhang, Siyong Gu, Zhiwei Zeng, Xiaoyun Ye,