电催化剂
双功能
纳米片
化学工程
阳极
材料科学
阴极
分解水
制氢
氢燃料
催化作用
氢
电化学
无机化学
纳米技术
化学
电极
物理化学
有机化学
工程类
光催化
作者
Shijin Li,Wenfu Xie,Yiheng Song,Yang Li,Yingjie Song,Jinze Li,Mingfei Shao
标识
DOI:10.1016/j.cej.2022.135473
摘要
Exploiting highly effective and low-cost electrocatalyst for water splitting is an instant challenge for the development of sustainable hydrogen energy. In this work, we report an integrated bifunctional electrocatalyst composed of CoPt nanoparticles uniformly distributed on the carbon nanosheet array ([email protected]), which exhibits excellent activity for both cathodic hydrogen evolution in a wide range of pH conditions and anodic glycerol oxidation reaction. Based on this novel electrocatalyst, a hydrogen evolution coupled with glycerol oxidation system was constructed, exhibiting dramatically enhanced hydrogen production rate (48 L h−1 m−2) in cathode, larger than traditional water splitting system (27 L h−1 m−2), and gaining high-valuable product (formate, 113 g h−1 m−2) in anode. Moreover, a quite high utilization degree of Pt (35.1%) is achieved on [email protected] owing to this hierarchical and alloy structure, 3.3 times higher than that of commercial Pt/C (10.6 %). We believe that the strategy demonstrated in this work can be extended to fabricate other multifunctional integrated electrocatalysts with high performance for hydrogen production.
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