Details

Autor(en) / Beteiligte

• Xu, Yeqing
• Jiang, Xingxing
• Shao, Gonglei
• Xiang, Haiyan
• Si, Sisi
• Li, Xing
• Hu, Travis Shihao
• Hong, Guo
• Dong, Shengyi
• Li, Huimin
• Feng, Yexin
• Liu, Song

Titel

Interface Effect of Ru‐MoS2 Nanoflowers on Lignin Substrate for Enhanced Hydrogen Evolution Activity

Ist Teil von

• Energy & environmental materials (Hoboken, N.J.), 2021-01, Vol.4 (1), p.117-125

Ort / Verlag

Hoboken: Wiley Subscription Services, Inc

Erscheinungsjahr

2021

Quelle

Wiley Online Library

Beschreibungen/Notizen

• The catalytic performance of Molybdenum disulfide (MoS2) has been still far from that of Pt‐based catalysts for inadequate active sites and sluggish electron transfer kinetics. Through engineering the interface between MoS2‐based materials and supported substrates, hybrid Ru‐doped MoS2 on carbonized lignin (CL) is designed and prepared as efficient catalyst for hydrogen evolution reaction (HER). The CL substrate not only facilitates the growth of MoS2 nanoflowers, but also promotes the electron transfer. Ru doping increases active sites greatly for HER. The hybrid catalyst achieves a low onset overpotential of 25 mV and a low Tafel slope of 46 mV dec−1. The favorable HER activity ascribes to the interfacial interaction between MoS2 and CL. Density functional theory calculations further confirm the improved HER performance with doped Ru atoms. This study presents a prototype application to design electrocatalysts with enhanced carrier mobility and high‐density active sites based on interface effect. Ru‐MoS2/CL nanoflowers are synthesized by MoS2 growing on the surface of CL substrate. The unique 3D nanoflower shape of Ru‐MoS2/CL exposes more active sites, and the interface effect between MoS2 and CL can accelarate the electron transfer.