单层
材料科学
离子
范德瓦尔斯力
阳极
锂(药物)
化学物理
离子运输机
纳米技术
兴奋剂
电导率
各向同性
各向异性
光电子学
化学
电极
分子
物理化学
有机化学
光学
医学
物理
内分泌学
作者
Meisheng Han,Yongbiao Mu,Jincong Guo,Lei Wei,Lin Zeng,Tianshou Zhao
标识
DOI:10.1007/s40820-023-01042-4
摘要
High theoretical capacity and unique layered structures make MoS2 a promising lithium-ion battery anode material. However, the anisotropic ion transport in layered structures and the poor intrinsic conductivity of MoS2 lead to unacceptable ion transport capability. Here, we propose in-situ construction of interlayer electrostatic repulsion caused by Co2+ substituting Mo4+ between MoS2 layers, which can break the limitation of interlayer van der Waals forces to fabricate monolayer MoS2, thus establishing isotropic ion transport paths. Simultaneously, the doped Co atoms change the electronic structure of monolayer MoS2, thus improving its intrinsic conductivity. Importantly, the doped Co atoms can be converted into Co nanoparticles to create a space charge region to accelerate ion transport. Hence, the Co-doped monolayer MoS2 shows ultrafast lithium ion transport capability in half/full cells. This work presents a novel route for the preparation of monolayer MoS2 and demonstrates its potential for application in fast-charging lithium-ion batteries.
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