One-dimensional N-doped carbon nanofibers produced by pre-oxide treatment for effective lithium storage,Dalton Transactions

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One-dimensional N-doped carbon nanofibers produced by pre-oxide treatment for effective lithium storage
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-06-13 , DOI: 10.1039/d2dt01307j
Wei Song _{1,

2} , Ruina Shi _{1,

2} , Lixin Zhang _{1,

2} , Tiantian Gao _{1,

2} , Wenhao Lian ₁ , Kankan Liu _{2,

3} , Xueting Niu ₁ , Yuqi Wu ₁ , Kangrui Nie ₁

Affiliation

Amorphous carbon materials have been confirmed as attractive anode materials for lithium-ion batteries. Herein, an effective strategy to fabricate amorphous carbon materials at low temperature under air atmosphere is proposed. As demonstrated, one-dimensional nitrogen-doping carbon nanofibers were obtained through simple electrospinning technology, following low-temperature heat treatment. Meanwhile, the nitrogen-doping concentration can be regulated by the heating temperature, which can further introduce different levels of adsorption sites on the surface of carbon and enhance the electronic conductivity. Based on experimental investigation, carbon nanofibers with a high nitrogen doping concentration of 18.1 at% achieved an outstanding cycling durability (194.0 mA h g⁻¹ at 2.0 A g⁻¹ after 2000 cycles).

中文翻译：

通过预氧化物处理生产的一维N掺杂碳纳米纤维用于有效的锂存储

非晶碳材料已被证实是锂离子电池的有吸引力的负极材料。在此，提出了一种在空气气氛下低温制备无定形碳材料的有效策略。如图所示，在低温热处理后，通过简单的静电纺丝技术获得了一维氮掺杂碳纳米纤维。同时，可以通过加热温度调节氮掺杂浓度，进一步在碳表面引入不同程度的吸附位点，提高电子导电性。根据实验研究，具有 18.1 at% 的高氮掺杂浓度的碳纳米纤维实现了出色的循环耐久性（194.0 mA hg ^-1 at 2.0 A g ^-12000 次循环后）。

更新日期：2022-06-13

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