Electronic Structure Engineering of NiCoP Sites via N, Ru Dual Doping for Bifunctional Water Electrolysis

作者：Meng Zhou, Wenzhi Jia, Tian Tian, Yuhan Ye, JiaYe Zhou, Jiping Tian, Guoxiang Pan, Bin He · 发表于：Inorganic Chemistry · 年份：2024 · DOI：10.1021/acs.inorgchem.4c03879 · 被引用次数：27 · 研究领域：Electrocatalysts for Energy Conversion、Advanced battery technologies research、Advanced Photocatalysis Techniques

Exploiting highly effective electrocatalysts is a challenge for boosting the overall efficiency of water splitting. Herein, we present a nitrogen and ruthenium dual-doping strategy to tailor the electronic structures of NiCoP(N, Ru–NiCoP), creating high-performance bifunctional electrodes for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The dual-doping approach is favorable for electronic interactions within the NiCoP and CoP, yielding a near-zero Gibbs free energy for H adsorption. Consequently, the optimized N, Ru–NiCoP electrodes exhibit exceptional bifunctional activities, with overpotentials of 53 and 405 mV at 100 mA cm –2 for the HER and OER, respectively. Notably, their performance surpasses that of commercial Pt/C and RuO 2 catalysts at large current densities, demonstrating their potential for industrial water splitting applications. Moreover, the overall water-splitting device achieves a current density of 10 mA cm –2 with a driving voltage of only 1.54 V. This work provides an effective heteroatom doping strategy to develop low-cost and highly active electrocatalysts.