材料科学
静电纺丝
表面改性
纳米纤维
化学工程
碳化
锂(药物)
阳极
纳米颗粒
纤维素
碳纳米纤维
碳纤维
木质素
纳米技术
锂离子电池
聚丙烯腈
纤维
电极
电池(电)
碳纳米管
复合材料
聚合物
化学
有机化学
扫描电子显微镜
医学
量子力学
内分泌学
复合数
功率(物理)
物理
工程类
物理化学
作者
Xiaojing Ma,Alevtina Smirnova,Hao Fong
标识
DOI:10.1016/j.mseb.2019.02.013
摘要
To develop high-performance flexible anodes has become an emerging technological demand for the next generation of lithium-ion batteries (LIBs). In this study, flexible substrates consisting of randomly overlaid electrospun carbon nanofibers (ECNFs) with fiber diameters of ∼200 nm and BET specific surface area of ∼583 m2∙g−1 were made from lignin and polyvinyl alcohol by electrospinning followed by stabilization in air and carbonization in argon. After surface-functionalization with Fe2O3 nanoparticles, the resulting flexible ECNF/Fe2O3 nanostructures/electrodes exhibited enhanced lithiation/delithiation performance. Specifically, in lithium-ion half-cells with ∼35 wt% Fe2O3 nanoparticles deposited on ECNF surfaces, the discharge capacities of ∼951 mA∙h∙g−1 in the first cycle and ∼715 mA∙h∙g−1 after 80 cycles were observed. This study presents a new approach for the fabrication of flexible LIB anodes by eliminating commonly used organic binders, metal substrates, and electrode slurries; furthermore, lignin that is a waste byproduct of cellulose industry has been successfully utilized in this approach.
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