In this work, globular WS₂/Co₉S₈ nanoflowers coated with nitrogen-doped carbon (NC) and anchored on nitrogen-doped porous graphene (NPG) foam (NPG@WS₂/Co₉S₈@NC) were successfully fabricated via solvothermal and chemical vapor deposition methods. The WS₂/Co₉S₈ heterostructure has the ability to generate an internal electric field that acts as a powerful driving factor for charge transport. The NC layer and three-dimensional NPG foam provide a special structure for the stabilization of WS₂ nanosheets and Co₉S₈ nanoparticles, which not only increases its conductivity and expands the layer spacing, but also mitigates structural changes in electrode materials during charge and discharge. When NPG@WS₂/Co₉S₈@NC is treated as the anode in a lithium-ion battery (LIB), a capacity of 952 mA h g⁻¹ at 1 A g⁻¹ can be achieved even after 600 cycles. The combined effect of self-supported electrodes and heterostructures has given us some new opportunities for improving the capability of anode components in LIBs.

中文翻译：

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WS2/Co9S8 异质结构，其碳层固定在氮掺杂石墨烯泡沫中，作为增强锂存储的阳极


在这项工作中，球状 WS ₂ /Co ₉ S ₈ 纳米花涂有氮掺杂碳（NC）并锚定在氮掺杂多孔石墨烯（NPG）上）泡沫（NPG@WS ₂ /Co ₉ S ₈ @NC）通过溶剂热和化学气相沉积方法成功制备。 WS ₂ /Co ₉ S ₈ 异质结构能够产生内部电场，作为电荷传输的强大驱动因素。 NC层和三维NPG泡沫为WS ₂ 纳米片和Co ₉ S ₈ 纳米粒子的稳定性提供了特殊的结构，这不仅提高了其稳定性导电性并扩大了层间距，而且还减轻了充电和放电过程中电极材料的结构变化。当NPG@WS ₂ /Co ₉ S ₈ @NC作为锂离子电池（LIB）负极时，容量为952 mA即使在 600 个循环后也可以达到 1 A g ⁻¹ 的 h g ⁻¹ 。自支撑电极和异质结构的综合作用为我们提高锂离子电池阳极组件的性能提供了一些新的机会。