关键字：WATER; ELECTROCATALYSTS; EFFICIENT
摘要：The preparation of low-cost and high -activated catalysts is an important challenge in the development of hydrogen production industry. Here we reported a novel core -shell triangular cone electrocatalyst Ni3S2@- Ni3N@Co2N0.67 grown on nickel foam (Ni3S2@NiCoN/NF) obtained by a self-templated method. The obtained Ni3S2@NiCoN/NF consists of Ni3S2 triangular cone core and Ni3N@Co2N0.67 particles shell, which has rich heterogeneous interface and synergistic effect. The strong electronic interaction at the newly bonded heterojunction regulates the electronic structure of active Ni, which is conducive to the transfer of charge to the active site. In addition, NiCoN particles are coated on the surface of Ni3S2 triangular pyramidal nucleus to form a coreshell structure, which can make sure the exposure of active sites. It is found that the self-templated conversion of Co(OH)2 coated Ni3S2 into NiCoN/Ni3S2 enhances the activity for hydrogen evolution reaction (HER). The hybrid material has excellent HER catalytic performance under alkaline conditions, which only needs to overcome the overpotential of 63 and 174 mV to reach the current density of 10 and 100 mA cm -2, respectively. This study provides a new idea for the preparation of efficient and stable catalysts with core -shell structure for HER.
卷号：59
期号：
是否译文：否