双功能
材料科学
析氧
分解水
电解
纳米颗粒
电催化剂
电解水
化学工程
合金
油胺
催化作用
电化学
电解质
贵金属
可逆氢电极
碱性水电解
无机化学
纳米技术
电极
冶金
金属
工作电极
光催化
化学
物理化学
有机化学
工程类
作者
Taotao Zhang,Xiaowang Liu,Xin Cui,Jia‐Liang Zhu,Shoujie Liu,Baoyou Geng
标识
DOI:10.1002/admi.201800359
摘要
Abstract The practical use of overall water electrolysis is largely hindered by the need for precious noble metal‐based catalysts. Here, the colloidal synthesis of earth‐abundant electrocatalysts of Mo–Ni nanoparticles for efficient water splitting by thermal decomposition of Ni(acac) 2 and Mo(CO) 6 in the presence of 1‐octadecene and oleylamine at 320 °C is reported. It is shown that the optimized catalysts (Mo 0.6 Ni 0.4 ) only require low overpotentials of 0.065 V for the hydrogen evolution reaction (HER) and of 290 mV for the oxygen evolution reaction (OER) to deliver a current density of 10 mA cm −2 in KOH (1.0 m ). The as‐prepared Mo–Ni alloy nanoparticles also show extraordinary durability for both the HER and OER. A low potential of ≈1.62 V is required to yield a current density of 10 mA cm −2 when utilizing the alloy nanoparticles as bifunctional catalysts in a two‐electrode electrolyzer system. The ease of preparing either rigid or flexible high‐performance electrodes by making use of the alloy nanoparticle electrocatalysts without the need for binder further suggests the attractive application of colloidally stable nanoparticles in the field of electrochemical water splitting.
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