Hard carbons derived from pine nut shells as anode materials for Na-ion batteries

作     者：Hao Guo Kai Sun Yaxiang Lu Hongliang Wang Xiaobai Ma Zhengyao Li Yong-Sheng Hu Dongfeng Chen 郭浩;孙凯;陆雅翔;王洪亮;马小柏;李正耀;胡勇胜;陈东风

作者机构：China Institute of Atomic EnergyBeijing 102413China Key Laboratory for Renewable EnergyBeijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100190China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2019年第28卷第6期

页      面：32-37页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：Project supported by the President Fund Project of China Institute of Atomic Energy 

主　　题：Na-ion battery anode hard carbon pine nut shells 

摘      要：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 ***, 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.