Journal
CELLULOSE
Volume 26, Issue 4, Pages 2557-2571Publisher
SPRINGER
DOI: 10.1007/s10570-019-02258-7
Keywords
Cellulose; Carbon fiber; Tin oxide nanoparticle; Electrospinning; Lithium ion battery
Funding
- National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2016R1A2B2012728, NRF-2018M3D1A1058744]
- R&D Center for Valuable Recycling(Global-Top R&BD Program) of the Ministry of Environment [R2-17-2016002250005]
- National Research Foundation of Korea [2016R1A2B2012728] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Cellulose has attracted attention as a biomass carbon precursor owing to its abundant reserves and unique properties such as a hierarchical fibrous structure and good mechanical properties. Here, we fabricate cellulose-derived carbon fibers via a facile electrospinning and carbonization process by using cellulose acetate precursor. The prepared carbon fibers are directly used as binder-free flexible anodes for Li ion batteries. They exhibit a high initial reversible specific capacity of 555mAhg(-1) with better cycling stability than carbonized commercial cellulose electrodes. To design extensive lithium storage electrodes, cellulose-derived carbon fiber/SnO2 composites are fabricated through electrospinning. In order to prevent the degradation of the active material, we encapsulate SnO2 nanoparticles in cellulose-derived carbon fibers with a large amount of SnO2 (46.4wt%), which is evenly dispersed in the fibrous carbon matrix. Cellulose-derived carbon fiber/SnO2 electrodes reveal a high reversible capacity of 667mAhg(-1) and stable cycling retention of 76% over 100 cycles at 200mAg(-1), which signify much better cycling performance than commercial SnO2 nanoparticles. These properties are reflected in the advantages of cellulose-derived carbon fiber/SnO2 composite electrodes such as high reactivity, good mechanical properties, and high electrical conductivity that originate from the cellulose-based fibril nanostructure. [GRAPHICS] .
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