Hierarchical NiMo Phosphide Nanosheets Strongly Anchored on Carbon Nanotubes as Robust Electrocatalysts for Overall Water Splitting

• DOI: 10.1021/acsami.8b10314
• Publication Date: 2018-08-06T09:28:59Z
• Authors: Hui Xu; Jingjing Wei; Ke Zhang; Yukihide Shiraishi; Yukou Du
• Keywords: Phosphide; Oxygen evolution

Although a great achievement has been made in the field of electrochemistry, exploration high-efficiency catalysts for generation hydrogen and oxygen via overall water splitting is still grand challenge. We herein report successful construction new class hierarchical with defect-enriched nickel-molybdenum phosphide nanosheets anchored on surface carbon nanotubes efficient splitting. Via nanostructure, more electron mobility mass transfer occurrence were achieved, resulting substantial enhancement electrocatalytic performances. Interestingly, overpotentials only 255 135 mV are required optimized Ni1Mo1P NSs@MCNTs to afford current 10 mA cm–2 evolution reaction reaction, respectively. More significantly, introduction molybdenum phosphorus also significant exposing active sites modifying bonding energy between metals; all these advantages have endowed NSs@MCNTs//Ni1Mo1P couple display highly electrocatalysis property relatively low potential 1.601 V at cm–2, shedding bright light large-scale electrocatalysis.