【摘 要】
：
Designing non-noble metal electrocatalysts toward alkaline hydrogen evolution reaction (HER) with high performance at a large current density is urgent.Herein,a CoO/CoP heterostructure catalyst (termed POZ)was designed by a phosphating strategy.The strong
【机 构】
：
State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China;School of M
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Designing non-noble metal electrocatalysts toward alkaline hydrogen evolution reaction (HER) with high performance at a large current density is urgent.Herein,a CoO/CoP heterostructure catalyst (termed POZ)was designed by a phosphating strategy.The strong electron transfer on the interface of CoO/CoP was experimentally and theoretically proven.POZ showed a low overpotential of 236 mV at 400 mA/cm2,which was 249 mV lower than non-phosphated sample.It also exhibited a remarkable solar-to-hydrogen conversion efficiency of 10.5％.In this work,the construction of CoO/CoP interface realized by a simple phosphating strategy could provide an important reference to boost the HER performance on those materials not merely metal oxides.
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