A bulky and flexible electrocatalyst for efficient hydrogen evolution based on the growth of MoS2 nanoparticles on carbon nanofiber foam

作者：Guo, Xin; Cao, Guo-lin; Ding, Fei; Li, Xinyuan; Zhen, Shuyu; Xue, Yi-fei; Yan, Yi-ming^*; Liu, Ting; Sun, Ke-ning

来源：Journal of Materials Chemistry A, 2015, 3(9): 5041-5046.

DOI：10.1039/c5ta00087d

• HIGHLY-ACTIVE CATALYST
• BACTERIAL-CELLULOSE
• EDGE SITES
• GRAPHENE
• NANOSHEETS
• SUPERCAPACITOR
• DESIGN
• HYBRID
• ENERGY

An advanced hydrogen evolution reaction (HER) electrocatalyst is highly desired for the development of solar water-splitting devices. In this work, we describe the preparation of a flexible, three-dimensional (3D) and durable electrode, which is composed of MoS2 nanoparticles grown on bacteria-cellulose-derived carbon fiber foam (MoS2/CNF). The MoS2/CNF foam was used as a bulky and flexible HER electrocatalyst, exhibiting excellent catalytic activity for a hydrogen evolution reaction in an acidic electrolyte (16 mA cm(-2) at an overpotential of 230 mV). Remarkably, this novel HER electrocatalyst shows a low onset overpotential of 120 mV, a small Tafel slope of 44 mV dec(-1), a high exchange current density of 0.09 mA cm(-2), and a Faradaic efficiency of nearly 100%. This work offers an attractive strategy of preparing bulky and flexible electrocatalyst for large-scale water splitting technology.

• 出版日期2015
• 单位中国电子科技集团公司第十八研究所; 北京理工大学