Herein, we reported a new strategy to grow N‐doped carbon nanotubes encapsulating Ni/MoN heterostructures on carbon cloth (Ni/MoN@NCNT/CC). The high intrinsic activity in the interface engineering of the Ni/MoN heterostructures, the high conductivity and protection of NCNT, and the three‐dimensional structure of the Ni/MoN@NCNT/CC contribute to its outstanding activity and stability for HER (overpotential of 207 mV at 10 mA cm ‐2 ) and OER (overpotential of 252 mV at 10 mA cm ‐2 ). Particularly, for HER, it can maintain a consistent potential at 100 mA cm ‐2 for 100 h. Besides, for OER the generated surface roughness and larger surface area can enhance OER activity of the catalyst. When used as a bifunctional electrocatalyst for overall water splitting, it can achieve a current density of 10 mA cm ‐2 at a cell voltage of 1.699 V with excellent durability. This work provides a new strategy to fabricate three‐dimensional heterostructured water‐splitting electrocatalysts with large surface area.

中文翻译：

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N掺杂碳纳米管，封装在碳布上生长的Ni / MoN异质结构，用于总水分解

在本文中，我们报道了一种新的策略，用于生长在碳布（Ni / MoN @ NCNT / CC）上包裹Ni / MoN异质结构的N掺杂碳纳米管。Ni / MoN异质结构的界面工程中的高固有活性，NCNT的高电导率和保护以及Ni / MoN @ NCNT / CC的三维结构有助于其对HER的出色活性和稳定性（ 10 mA cm ‐2时为207 mV）和OER（10 mA cm ‐2时为252 mV的过电势）特别是对于HER，它可以在100 mA cm -2下保持100 h的恒定电位。此外，对于OER，所产生的表面粗糙度和较大的表面积可以增强催化剂的OER活性。当用作整体水分解的双功能电催化剂时，它在电池电压为1时可以达到10 mA cm -2的电流密度。699 V具有出色的耐用性。这项工作为制备具有大表面积的三维异质结构水分解电催化剂提供了新的策略。