Developing effective bifunctional electrocatalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) has a pivotal role in large-scale application of hydrogen energy. Herein, a facile and scalable strategy is developed to prepare in situ supported MoS₂ coupled with CoB with Se doping on carbon cloth (MoS₂/CoB–Se/CC) via a solvothermal process and subsequent selenylation treatment. For the HER, MoS₂/CoB–Se/CC delivers the smallest overpotential (93 mV) to reach 10 mA cm⁻² compared to MoS₂/CoB/CC (158 mV), MoS₂/CC (234 mV), and CoB/CC (410 mV) in 1 M KOH, indicating that the coupling effects of MoS₂ and CoB with Se doping are responsible for boosting the catalytic performance. Impressively, the designed MoS₂/CoB–Se/CC also presents outstanding catalytic activity for the OER, with only a small overpotential of 270 mV needed to drive 10 mA cm⁻². Moreover, the developed MoS₂/CoB–Se/CC used as both anode and cathode also shows remarkable catalytic performance for overall water-splitting, with a small cell voltage of 1.58 V needed to drive 10 mA cm⁻². This work provides an efficient and promising protocol to design bifunctional electrocatalysts for overall water-splitting.

中文翻译：

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MoS2 / CoB，Se掺杂在碳布上，可驱动碱性电解液中的总水分解

开发用于氢释放反应（HER）和氧释放反应（OER）的有效双功能电催化剂在大规模应用氢能中具有举足轻重的作用。在本文中，开发了一种简便且可扩展的策略，以通过溶剂热工艺和随后的硒化处理，在碳布上（MoS ₂ / CoB–Se / CC）制备原位负载的MoS ₂与CoB以及掺Se的CoB 。对于HER，与MoS ₂ / CoB / CC（158 mV），MoS ₂ / CC（234 mV）和MoS ₂ / CoB / Se（CC m）相比，MoS ₂ / CoB-Se / CC具有最小的过电势（93 mV），可达到10 mA cm ^-2。 1 M KOH中的CoB / CC（410 mV），表明MoS的耦合效应₂和CoB掺杂Se有助于提高催化性能。令人印象深刻的是，设计的MoS ₂ / CoB-Se / CC还具有出色的OER催化活性，仅需270 mV的小过电位即可驱动10 mA cm ^-2。此外，发达的MoS ₂ / CoB-Se / CC既用作阳极又用作阴极，在整个水分解中也显示出显着的催化性能，驱动10 mA cm ^-2所需的小电池电压为1.58V。这项工作为设计用于整体水分解的双功能电催化剂提供了有效而有前途的方案。