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| 分层构建的Co9S8/MoS2空心异质结实现高效氢气析出 |
| Hierarchically Engineered Hollow Co9S8/MoS2 Heterostructures Enable Efficient Hydrogen Evolution |
| 投稿时间：2025-12-12 修订日期：2026-06-04 |
| DOI： |
| 中文关键词: 异质结 电催化剂 析氢反应 |
| 英文关键词:Heterostructure Electrocatalyst Hydrogen evolution reaction |
| 基金项目: |
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| 摘要点击次数: 43 |
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| 中文摘要: |
| 合理设计低成本、非贵金属的析氢反应（HER）电催化剂对于可持续制氢至关重要。本文报道了一种通过牺牲模板法构建的空心Co9S8/MoS2管状异质结构，该结构整合了丰富的催化位点，并加速了电荷和质量传输。层状MoS2纳米片在Co9S8纳米管上的原位生长抑制了纳米片的团聚，最大程度地暴露了边缘位点，并利用空心管状结构促进了电解液的渗透和氢气的释放。因此，该异质结构在0.5 M H2SO4溶液中，于-10 mA cm?2电流密度下仅实现了150 mV的过电位，并具有优异的耐久性，凸显了其作为酸性介质中高效HER电催化剂的潜力。 |
| 英文摘要: |
| The rational design of cost-effective, non-precious-metal electrocatalysts for the hydrogen evolution reaction (HER) is pivotal for sustainable hydrogen production. Here we report a hollow Co9S8/MoS2 tubular heterostructure, constructed via a sacrificial-template route, that integrates abundant catalytic sites with accelerated charge and mass transport. The in-situ growth of lamellar MoS2 nanosheets on Co9S8 nanotubes suppresses nanosheet aggregation, maximizes edge-site exposure, and leverages the hollow tubular framework to facilitate electrolyte penetration and hydrogen release. As a result, the heterostructure achieves an overpotential of only 150 mV at ?10 mA cm?2 in 0.5 M H2SO4, together with excellent durability, underscoring its promise as a robust HER electrocatalyst in acidic media. |
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