Regulated Ion Transport Dynamics and Electrochemical Applications of Nanofiber Composites
Nanofiber composites have been widely used in new energy storage systems like lithium-metal batteries(LMBs,including lithium-sulfur batteries,lithium-air batteries,etc.)due to their high porosity,high specific surface area,diversified compositions and structural designability.The electrochemical performance of the batteries largely depends on the ion transfer process during charging and discharging,while the structural morphology and surface/interface properties of nanofiber composites have an important influence on the ion transport kinetics in batteries.Therefore,focusing on the key scientific and technical issues of sluggish ion transport dynamics and the shuttling of intermediate lithium polysulfides faced by LMBs,this review firstly introduces different new designs and preparation methods of nanofiber composites.Then,the effects of composition and structure of nanofiber composites on the regulation and optimization of ion transport kinetics in lithium batteries are discussed in detail by combining the recent works of our team.Following,the applications of nanofiber composites in different fields of lithium batteries are summarized,such as anodes,cathodes,separators,and solid-state electrolytes,etc.The challenges and prospects of nanofiber composites are finally proposed in future applications of high-performance energy storage equipment.
NanofibersNanocompositesElectrospinningIon transport dynamicsElectrochemical performance
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