Boosting the oxygen evolution electrocatalysis of high-entropy hydroxides by high-valence nickel species regulation
2022
Zhang, Tao | Meng, Yu-Lan | Zhao, Yu-Hang | Ni, Jing-Chang | Pan, Yu | Dai, Yan | Tan, Zhenquan | Wang, Xiao-Feng | Song, Xue-Zhi
The addition of an extra metal source induces the transformation from crystalline α-Ni(OH)₂ to an amorphous NiCoFeCrMo-based high-entropy hydroxide (HEH) and maximizes the high-valence Ni³⁺ content in HEH. For OER electrocatalysis, the quinary HEH possesses an overpotential of 292 mV at 10 mA cm⁻², a Tafel slope of 54.31 mV dec⁻¹ and the boosted intrinsic activity, surpassing other subsystems.
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Эту запись предоставил National Agricultural Library