首页|Enhancing hydrogen evolution through urea electrolysis over Co-doped Ni-P-O film on nickel foam
Enhancing hydrogen evolution through urea electrolysis over Co-doped Ni-P-O film on nickel foam
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2022 Elsevier B.V.A Co-doped Ni-P-O film supported on nickel foam is successfully prepared. It exhibits high activity toward urea oxidation reaction (UOR) and hydrogen evolution reaction (HER). Regarding UOR, the onset potential of Ni-P-O is reduced by the introduction of Co and gradually decreases with the incremental of Co content in the film ascribed to the reduction of conversion potential of Ni2+/Ni3+. Concerning HER, the incorporated Co in Ni-P-O film not only increases the amounts of active sites, but also boost the synergetic effect on water dissociation and hydrogen desorption. Particularly, the optimum activity of Ni-P-O is achieved by the introduction of an 8% cobalt source (8% Co:Ni-P-O/NF), which offers the highest activity with the lowest overpotential of 94 mV and Tafel slope of 46.2 mV·dec?1. Furthermore, the efficiency of hydrogen generation is further improved by urea-assistance over the electrolyzer coupled with 8% Co:Ni-P-O/NF electrode. Only 1.481 V is needed to afford 20 mA·cm?2 in urea-mediated electrolysis cell, much lower than that for urea-free electrolyte with 1.689 V.
Cao J.、Zheng Y.、Pan J.、Wang J.、Li C.、Jiao Z.、Zhu R.、Luo F.、Wei Q.、Long H.
展开 >
Key Laboratory of Optical Field Manipulation of Zhejiang Province and Key Laboratory of ATMMT ministry of Education Department of Physics Zhejiang Sci-Tech University
School of Materials Science and Engineering State Key Laboratory of Powder Metallurgy Central South University
School of Materials Science and Hydrogen Energy Foshan University
NSTL
Elsevier
