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Waste Sawdust-Derived Nanoporous Carbon as a Positive Electrode for Lithium-Ion Storage
Macromolecular Research ( IF 2.8 ) Pub Date : 2021-01-09 , DOI: 10.1007/s13233-020-8169-y
Jin Hwan Kwak , Jong Chan Hyun , Seong Bak Moon , Hyoung-Joon Jin , Hee-Dae Lim , Young Soo Yun

Sustainable resources, particularly those induced from bio-derived waste materials, can be transformed into useful nanocarbon materials with high functionality. In this study, nanoporous carbon materials (N-CMs) were fabricated from waste sawdust using a simple heating process and a carefully controlled activation process. The waste-induced N-CMs had a high specific surface area of ∼3044.6 m2 g−1, a nanoporous structure, and > 6 at.% heteroatoms. These properties led to high electrochemical performance with a specific capacity of ∼298 mAh g−1 and excellent cycling stability over 2,000 cycles as a cathode in lithium-ion storage. Moreover, when the N-CMs were assembled with a nanostructured carbon-based anode, all full carbon-based cells could deliver high specific energy and specific power of ∼377 Wh kg−1 and ∼20,247 W kg−1, respectively, with a long-term cycle life of more than 1,000 cycles.



中文翻译:

废锯末衍生的纳米多孔碳作为锂离子存储的正极

可持续资源,特别是由生物废料引起的资源,可以转化为具有高功能性的有用纳米碳材料。在这项研究中,使用简单的加热过程和精心控制的活化过程,由废木屑制成了纳米多孔碳材料(N-CM)。废物诱导的N-CM具有约3044.6 m 2 g -1的高比表面积,纳米孔结构和> 6 at。%的杂原子。这些性能带来了较高的电化学性能,比容量约为298 mAh g -1作为锂离子存储中的阴极,具有超过2,000个循环的出色循环稳定性。此外,当N的CM用一个纳米结构的碳基阳极组装时,所有的全碳系细胞可以递送~377瓦公斤的高比能量和比功率-1和~20,247W¯¯千克-1,分别用一长期循环寿命超过1,000次循环。

更新日期:2021-01-10
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