【摘要】 性能优异、价格低廉的催化剂对电解水制氢十分重要。通过电化学脱合金法制备了具有自支撑结构的纳米多孔CoCuP催化剂，纳米多孔结构具有大的比表面积，提供了更多的活性位点。Cu原子的引入调整了Co和P的电子结构，优化了氢原子的解吸，提升了催化剂的催化性能。np-Co₇₅Cu₅P₂₀在碱性溶液中的过电位为60.6 mV,塔菲尔斜率为33.1 mV dec^-1。在中性溶液中的过电位为132.3 mV,塔菲尔斜率127 mV dec^-1。该催化剂在大的pH范围内具有良好的电解水析氢性能。更多还原

【Abstract】 The catalysts with good performance are very important to the hydrogen production. In this paper, nanoporous CoCuP catalysts with self-supported structure were prepared by electrochemical dealloying. The nanoporous structure exhibits the larger specific surface area and provides more active sites. The introduction of Cu atoms adjust the electronic structure of Co and P and improve the catalytic performance of the catalyst. The overpotential of np-Co₇₅Cu₅P₂₀ in alkaline solution is 60.6 mV, and the Tafel slope is 33.1 mV/dec. In neutral solution, the overpotential of np-Co₇₅Cu₅P₂₀ is 132.3 mV and the Tafel slope is 127 mV/dec. The catalysts can be well used in the solutions with large pH range.更多还原