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N-doped Porous Hard-Carbon Derived from Recycled Separators for Efficient Lithium-Ion and Sodium-Ion Batteries

Abstract

Minimizing life-cycle environmental impacts of rechargeble batteries is attacting trenmendous recent interests. Of a number of key components for lithium-ion and sodium-ion batteries, hard carbon represents a promising material for battery anodes due to advantages such as high and fast rate capability , no intercalation-induced exfoliation, and easy to form molecularly doped anodes. While there are several methods to make hard carbon, here we demonstrate that the waste polyimide separator could serve as an ideal precursor to synthesize hard carbon with in situ nitrogen doping. By inheriting the unique net-like structure of the polyimide fiber separator, the resultant material exhibits a three-dimensional macro-porous structure consisting of an interconnected network of nitrogen-doped carbon fibres. The porous architecture of the material achieved at a carbonization temperature of 900 ℃ yields a high capacity anode with a long cycling life for the rechargeable Li-ion and Na-ion battery.

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Publication details

The article was accepted on 23 Dec 2018 and first published on 07 Jan 2019


Article type: Paper
DOI: 10.1039/C8SE00590G
Citation: Sustainable Energy Fuels, 2019, Accepted Manuscript
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    N-doped Porous Hard-Carbon Derived from Recycled Separators for Efficient Lithium-Ion and Sodium-Ion Batteries

    Y. Wang, Y. Li, S. S. Mao, D. Ye, W. Liu, R. Guo, Z. Feng, J. Kong and J. Xie, Sustainable Energy Fuels, 2019, Accepted Manuscript , DOI: 10.1039/C8SE00590G

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