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Composite of nanocrystalline cellulose with tin dioxide as Lightweight Substrates for high-performance Lithium-ion battery
Korean Journal of Chemical Engineering ( IF 2.9 ) Pub Date : 2020-04-29 , DOI: 10.1007/s11814-020-0506-5
Quang Nhat Tran , Il Tae Kim , Jaehyun Hur , Ji Hyeon Kim , Hyung Wook Choi , Sang Joon Park

Nanocrystalline Cellulose (CNC) has smoother surfaces, better optical transparency and higher mechanical strength in comparison with various cellulose fibers. These properties combined with their low cost, light weight, and flexiblility indicate CNC’s great potential as an attractive candidate for preparation of carbon materials, which can be promising electrode for Lithium-ion batteries. However, CNC cannot be directly used in battery fabrication because of its electrically non-conductive property. Wherefore, using pyrolysis to convert CNC into conductive materials is extensively investigated. In our study, high temperature range is used to convert nanocrystalline cellulose into highly conductive carbon material and used in Lithium-ion batteries. The nanocellulose powder after pyrolysis from 800 °C and 1,600 °C is used as active material in Lithium-ion battery electrodes, and the results obtained show a good electrochemical performance with stable cycling capacity. Following, the carbon network obtained through the pyrolysis (800 °C and 1,600 °C) of nanocrystalline cellulose incorporation with tin dioxide (SnO 2 ) was also used as electrode material in Lithium-ion batteries, resulting in stability, outstanding capacity and better performance in comparison with other carbon-based materials.

中文翻译:

纳米晶纤维素与二氧化锡复合作为高性能锂离子电池的轻质基材

与各种纤维素纤维相比,纳米晶纤维素 (CNC) 具有更光滑的表面、更好的光学透明度和更高的机械强度。这些特性结合其低成本、轻量和柔韧性,表明 CNC 作为制备碳材料的有吸引力的候选者的巨大潜力,碳材料可能是锂离子电池的有前途的电极。然而,CNC 不能直接用于电池制造,因为它不导电。因此,广泛研究了使用热解将 CNC 转化为导电材料。在我们的研究中,高温范围用于将纳米晶纤维素转化为高导电性碳材料并用于锂离子电池。从 800 °C 和 1 热解后的纳米纤维素粉末,600°C用作锂离子电池电极的活性材料,所得结果显示出良好的电化学性能和稳定的循环容量。随后,通过纳米晶纤维素与二氧化锡(SnO 2 )的热解(800°C 和 1,600°C)获得的碳网络也被用作锂离子电池的电极材料,从而获得稳定性、出色的容量和更好的性能与其他碳基材料相比。
更新日期:2020-04-29
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