中国物理学会期刊网
Chin.Phys.B  2019, Vol.28 Issue (6): 068203  DOI:10.1088/1674-1056/28/6/068203
Hard carbons derived from pine nut shells as anode materials for Na-ion batteries
1 China Institute of Atomic Energy, Beijing 102413, China;2 Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;3 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China>

Abstract

Hard carbons as promising anode materials for Na-ion batteries (NIBs) have captured extensive attention because of their low operation voltage, easy synthesis process, and competitive specific capacity. However, there are still several disadvantages, such as high cost and low initial coulombic efficiency, which limit their large-scale commercial applications. Herein, pine nut shells (PNSs), a low-cost biomass waste, are used as precursors to prepare hard carbon materials. Via a series of washing and heat treatment procedures, a pine nut shell hard carbon (PNSHC)-1400 sample has been obtained and delivers a reversible capacity of around 300 mAh/g, a high initial coulombic efficiency of 84%, and good cycling performance. These excellent Na storage properties indicate that PNSHC is one of the most promising candidates of hard carbon anodes for NIBs.
收稿日期:2019-03-27

基金资助

Project supported by the President Fund Project of China Institute of Atomic Energy.

引用本文

[英文]
Hao Guo, Kai Sun, Yaxiang Lu, Hongliang Wang, Xiaobai Ma, Zhengyao Li, Yong-Sheng Hu, Dongfeng Chen. Hard carbons derived from pine nut shells as anode materials for Na-ion batteries[J]. Chin. Phys. B, 2019, 28(6): 068203.
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中国物理学会期刊网