近日，陈俊宇同学与王溦老师在锂离子电池领域取得了重大进展，他们采用超声喷雾热解技术成功制备了w掺杂MoSe₂/rGO纸状微球，为提升电池性能提供了崭新的思路。MoSe₂作为一种潜力巨大的锂离子电池阳极候选材料，长期以来受制于其电导率和体积效应等关键问题。为应对这一挑战，通过对其微观结构的精心优化，有效提升了材料的储锂性能。该研究首先充分利用了MoSe₂与还原氧化石墨烯相似的二维结构特点，利用喷雾热解实现了自组装，形成了明确的范德瓦尔斯异质结构，从而在微观界面上提升了复合材料的电子和离子转移能力。其次，纸状微球的中尺度形态为材料提供了额外的体积膨胀缓冲空间，进一步优化了材料的性能。此外，w掺杂不仅增加了MoSe₂的层间间距，降低了锂的扩散电阻，还能够调节材料的能带结构。密度泛函理论（DFT）计算证实，w掺杂的MoSe₂/rGO具有最窄的带隙，进一步验证了其在锂离子电池领域的潜力。

Two-dimensional MoSe₂ is a promising candidate for lithium-ion battery anodes. However, its conductivity and lithium storage volumetric effect still need to be optimized. In this work, W-doped MoSe₂/rGO paper-like microspheres are successfully prepared through ultrasonicspray pyrolysis, achieving optimization at both the microstructure and mesostructure to enhance the lithium storage performance of the material. Firstly, by utilizing the similar two-dimensional structure between MoSe₂ and rGO, self-assembly is achieved through spray pyrolysis, resulting in a well-defined van der Waals heterostructure at the interface on the microscale, enhancing the electron and ion transfer capability of the composite. Secondly, the mesoscale paper-like microsphere morphology provides additional volume expansion buffering space. Moreover,W-doping not only increases the interlayer spacing of MoSe₂ (0.73 nm), thereby reducing the diffusion resistance of Li?, but also allow for the modulation of the energy band structure of the material. Density functional theory (DFT) calculations confirm that W-doped MoSe₂/rGO exhibits the narrowest bandgap (0.892 eV). Therefore, the composite demonstrates excellent lithium storage performance, maintaining a specific capacity of 732.9 mAh g^-1 after 300 cycles at a current density of 1 A g^-1 .

论文题目：Spray pyrolysis-derived W-doped MoSe₂/rGO paper-like microspheres: optimization of microstructure and mesostructure for enhanced lithium storage.

论文作者：Wei Wang, JunYu Chen, Jie Ouyang, Hong Yin, AoJie Li, Liang Chen, JunLin Huang, YuCan Zhu , GangYong Li, ZhaoHui Hou.