Amorphous MoSxCly electrocatalyst supported by vertical graphene for efficient electrochemical and photoelectrochemical hydrogen generation

作者：Zhang, Xingwang^*; Meng, Fei; Mao, Shun; Ding, Qi; Shearer, Melinda J.; Faber, Matthew S.; Chen, Junhong; Hamers, Robert J.; Jin, Song

来源：Energy & Environmental Science, 2015, 8(3): 862-868.

DOI：10.1039/c4ee03240c

• CHEMICAL-VAPOR-DEPOSITION
• MOS2 ULTRATHIN NANOSHEETS
• ACTIVE EDGE SITES
• MOLYBDENUM SULFIDES
• CATALYTIC-ACTIVITY
• ORIENTED GRAPHENE
• EVOLUTION
• HYBRID
• GROWTH
• HETEROSTRUCTURES

We report amorphous MoSxCly as a high-performance electrocatalyst for both electrochemical and photoelectrochemical hydrogen generation. This novel ternary electrocatalyst is synthesized via chemical vapour deposition at temperatures lower than those typically used to grow crystalline MoS2 nanostructures and structurally characterized. The MoSxCly electrocatalysts exhibit stable and high catalytic activity toward the hydrogen evolution reaction, as evidenced by large cathodic current densities at low overpotentials and low Tafel slopes (ca. 50 mV decade(-1)). The electrocatalytic performance can be further enhanced through depositing MoSxCly on conducting vertical graphenes. Furthermore, MoSxCly can be directly deposited on p-type silicon photocathodes to enable efficient photoelectrochemical hydrogen evolution.

• 出版日期2015
• 单位浙江大学