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N-doped three-dimensional porous carbon materials derived from bagasse biomass as an anode material for K-ion batteries
Journal of Electroanalytical Chemistry ( IF 4.5 ) Pub Date : 2021-09-02 , DOI: 10.1016/j.jelechem.2021.115668
Qijiu Deng 1, 2 , Haixuan Liu 1 , Yangyang Zhou 1 , Zongbin Luo 1 , Yumeng Wang 3 , Zhiyun Zhao 1 , Rong Yang 1
Affiliation  

To realize the sustainability of potassium-ion (K-ion) batteries for large-scale energy storage applications, a resource-abundant and cost-effective anode material is the key to design. Herein, we develop nitrogen-doped three-dimensional biomass porous activated carbon materials using bagasse biomass waste by carbonization and further activation with NiCl2 and urea as an advanced anode material for K-ion batteries. The results demonstrate that NiCl2 is an important factor in the formation of porous structure and nitrogen doping also promotes the change of morphology, enabling fast transport of K+ and electrons. More importantly, the as-synthesized carbon material could exhibit a superior K-storage property with a reversible capacity of 100.4 mAh g−1 at a current density of 200 mA g−1 over 400 cycles without any obvious capacity fading in K-ion batteries. This work provides significant guideline for structural design in large-scale application.



中文翻译:

源自甘蔗渣生物质的N掺杂三维多孔碳材料作为钾离子电池的负极材料

为了实现钾离子(K-ion)电池在大规模储能应用中的可持续性,资源丰富且具有成本效益的负极材料是设计的关键。在此,我们利用甘蔗渣生物质废物通过碳化并进一步用 NiCl 2和尿素活化来开发氮掺杂的三维生物质多孔活性炭材料,作为 K 离子电池的先进负极材料。结果表明,NiCl 2是形成多孔结构的重要因素,氮掺杂也促进了形貌的变化,实现了 K +和电子的快速传输。更重要的是,合成的碳材料可以表现出优异的储钾性能,可逆 容量为 100.4 mAh g-1在 200 mA g -1的电流密度下经过 400 次循环,K 离子电池没有任何明显的容量衰减。这项工作为大规模应用中的结构设计提供了重要的指导。

更新日期:2021-09-06
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