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Unique Hierarchical Mo2C/C Nanosheet Hybrids as Active Electrocatalyst for Hydrogen Evolution Reaction
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-11-16 00:00:00 , DOI: 10.1021/acsami.7b13822 Can Wu 1 , Jinghong Li 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-11-16 00:00:00 , DOI: 10.1021/acsami.7b13822 Can Wu 1 , Jinghong Li 1
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A facile and effective pyrolysis stratagem is proposed for the synthesis of hierarchical Mo2C/C nanosheet hybrids with sodium chloride (NaCl) crystals as a template. Large numbers of well-dispersed sheet-like Mo2C nanoparticles with the thickness of about 20 nm were anchored on the surface of carbon nanosheets. Benefiting from the ideal synergistic catalytic effect between the highly active sheet-like Mo2C nanoparticles and the conductive graphitic carbon, and strong charge transfer ability, the unique hierarchical sheet-like structure of Mo2C/C hybrids demonstrated excellent hydrogen evolution reaction (HER) performance in both alkaline and acid medias with small overpotential (125 mV for 10 mA cm–2 in 1 M KOH and 180 mV for 10 mA cm–2 in 0.5 M H2SO4) and remarkable stability, which is comparable to most reported non-noble metal HER electrocatalysts. With the simplicity and low-cost of the synthetic approach, the strategy presented here can be extendable to the preparation of other transition metal-based/carbon nanosheet hybrids for versatile applications.
中文翻译：
独特的Mo 2 C / C分层纳米片杂化体作为活性氢分解反应的电催化剂
提出了一种简便有效的热解策略，以氯化钠（NaCl）晶体为模板，合成分级的Mo 2 C / C纳米片杂化体。大量具有约20nm厚度的良好分散的片状Mo 2 C纳米颗粒锚定在碳纳米片的表面上。得益于高活性片状Mo 2 C纳米颗粒与导电石墨碳之间的理想协同催化作用，以及强大的电荷转移能力，Mo 2 C / C杂化体独特的层状片状结构表现出出色的氢释放反应（ HER）在弱电势较小的碱性和酸性介质中的性能（10 mA cm –2时为125 mV在0.5 MH 2 SO 4中在1 M KOH和180 mV中对10 mA cm –2而言）和显着的稳定性，可与大多数报道的非贵金属HER电催化剂相媲美。凭借合成方法的简单性和低成本，此处介绍的策略可以扩展到制备其他基于通用金属的过渡金属/碳纳米片杂化物。
更新日期：2017-11-17
中文翻译：
独特的Mo 2 C / C分层纳米片杂化体作为活性氢分解反应的电催化剂
提出了一种简便有效的热解策略，以氯化钠（NaCl）晶体为模板，合成分级的Mo 2 C / C纳米片杂化体。大量具有约20nm厚度的良好分散的片状Mo 2 C纳米颗粒锚定在碳纳米片的表面上。得益于高活性片状Mo 2 C纳米颗粒与导电石墨碳之间的理想协同催化作用，以及强大的电荷转移能力，Mo 2 C / C杂化体独特的层状片状结构表现出出色的氢释放反应（ HER）在弱电势较小的碱性和酸性介质中的性能（10 mA cm –2时为125 mV在0.5 MH 2 SO 4中在1 M KOH和180 mV中对10 mA cm –2而言）和显着的稳定性，可与大多数报道的非贵金属HER电催化剂相媲美。凭借合成方法的简单性和低成本，此处介绍的策略可以扩展到制备其他基于通用金属的过渡金属/碳纳米片杂化物。
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