Rational Design of Efficient Electrocatalysts for Hydrogen Evolution Reaction: Single Layers of WS2 Nanoplates Anchored to Hollow Nitrogen-Doped Carbon Nanofibers

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• 作者：Sunmoon Yu ; Jaehoon Kim ; Ki Ro Yoon ; Ji-Won Jung ; Jihun Oh ; Il-Doo Kim
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：December 30, 2015
• 年：2015
• 卷：7
• 期：51
• 页码：28116-28121
• 全文大小：428K
• ISSN：1944-8252

文摘

To exploit the benefits of nanostructuring for enhanced hydrogen evolution reaction (HER), we employed coaxial electrospinning to synthesize single-layered WS₂ nanoplates anchored to hollow nitrogen-doped carbon nanofibers (WS₂@HNCNFs) as efficient electrocatalysts. For comparison, bulk WS₂ powder and single layers of WS₂ embedded in nitrogen-doped carbon nanofibers (WS₂@NCNFs) were synthesized and electrochemically tested. The distinctive design of the WS₂@HNCNFs enables remarkable electrochemical performances showing a low overpotential with reduced charge transfer resistance, a small Tafel slope, and excellent durability. The experimental results highlight the importance of nanostructure engineering in electrocatalysts for enhanced HER.