摘要
电解水制氢是解决环境和能源危机的一种有效策略.本文采用简便的一步油浴法合成分级双核壳架构(HCSA)铱基多金属合金催化剂,并将其应用于酸性环境中的全解水.所制备的IrNiCu HCSA表现出可以与Pt/C相媲美的氢析出(HER)性能和优于IrO2的氧析出(OER)性能. IrNiCu HCSA作为一种双功能催化剂也显示出卓越的全解水性能,在酸性环境中当电流密度为10 mA cm^-2时电压仅为1.53 V,并且在持续催化20 h后性能基本不变,具有很好的稳定性.本研究为新型铱基多金属合金结构的设计与合成奠定了基础,有望应用于电化学催化水分解领域.
The overall water splitting for hydrogen production is an effective strategy to resolve the environmental and energy crisis. Here, we report a facile approach to synthesize the Ir-based multimetallic, hierarchical, double-coreshelled architecture(HCSA) assisted by oil bath reaction for boosting overall water splitting in acidic environment. The Ir Ni Cu HCSA shows superior electrocatalytic activity for hydrogen evolution reaction(HER) and oxygen evolution reaction(OER), which are comparable to commercial Pt/C and better than IrO2. The Ir Ni Cu HCSA exhibits remarkably catalytic efficiency as bifunctional catalyst for overall water splitting where a low cell voltage of 1.53 V is enough to drive a current density of 10 mA cm^-2 and maintains stable for at least 20 h. The presented work for the design and synthesis of novel Ir-based multimetallic architecture paves the way for highperformance overall water splitting catalysis.
作者
张洁
陈泽霖
刘畅
赵君
刘思靓
饶德伟
聂安民
陈亚楠
邓意达
胡文彬
Jie Zhang;Zelin Chen;Chang Liu;Jun Zhao;Siliang Liu;Dewei Rao;Anmin Nie;Yanan Chen;Yida Deng;Wenbin Hu(School of Materials Science and Engineering,Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education,Tianjin Key Laboratory of Composite and Functional Materials,Tianjin University,Tianjin 300072,China;School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China;State Key Lab of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,China;Joint School of National University of Singapore and Tianjin University,Internatioal Campus of Tianjin University,Fuzhou 350207,China)
基金
supported by the National Natural Science Foundation of China (51571151, 51701139, 51671143 and U1601216)
