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首页> 外文期刊>RSC Advances >Towards free-standing MoS2 nanosheet electrocatalysts supported and enhanced by N-doped CNT-graphene foam for hydrogen evolution reaction
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Towards free-standing MoS2 nanosheet electrocatalysts supported and enhanced by N-doped CNT-graphene foam for hydrogen evolution reaction

机译：N掺杂的CNT-石墨烯泡沫支撑和增强的自立MoS2纳米片状电催化剂用于析氢反应

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摘要

Large-scale free-standing porous carbon-based catalyst supports are critically needed for the hydrogen evolution reaction (HER) in view of their practical application. In this work, MoS2 nanosheets were uniformly deposited onto N-doped carbon nanotube-graphene (N-CNT-G) hybrids, forming a three-dimensional (3D) free-standing architecture. The designed 3D hybrid materials exposed the MoS2 nanosheet catalyst on the one-dimensional CNTs and there was facilitated ion transportation because of the porous graphene foam, and these 3D hybrid materials were used as electrocatalysts for HER directly without any transferring process. Moreover, N doping decreased the overpotential to 0.08 V, which increased the stability and promoted the catalytic activity, providing a facile route to design advanced high-performance HER catalysts towards a free-standing configuration.
机译：鉴于其实际应用，迫切需要大规模的自立式多孔碳基多孔催化剂载体，以进行放氢反应（HER）。在这项工作中，MoS2纳米片均匀地沉积在N掺杂的碳纳米管-石墨烯（N-CNT-G）杂化物上，形成三维（3D）独立式结构。设计的3D杂化材料将MoS2纳米片催化剂暴露于一维CNT上，并且由于多孔石墨烯泡沫而促进了离子迁移，并且这些3D杂化材料无需任何转移过程即可直接用作HER的电催化剂。此外，N掺杂将过电势降低至0.08 V，这增加了稳定性并提高了催化活性，为设计先进的高性能HER催化剂实现独立构型提供了简便的途径。

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