A green route to synthesize low-cost and high-performance hard carbon as promising sodium-ion battery anodes from sorghum stalk waste

作     者：Xiaoming Zhu Xiaoyu Jiang Xiaoling Liu Lifen Xiao Yuliang Cao 

作者机构：Hubei Collaboration Innovation Center of Non-power Nuclear Technology School of Nuclear Technology & Chemistry and Biology Hubei University of Science and Technology Hubei Key Lab.of Electrochemical Power Sources College of Chemistry and Molecular Sciences Wuhan University College of Chemistry Central China Normal University 

出 版 物：《Green Energy & Environment》 (绿色能源与环境（英文版）)

年 卷 期：2017年第2卷第3期

页      面：310-315页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0808[工学-电气工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：financial support by the 2011 Program of Hubei Province National Key R&D Program of China (No.2015CB251100) National Science Foundation of China (No. 21673165, 21373155 and 21333007) Natural Science Foundation of Hubei Province, China (Grant No. 2015CFC774) Program for New Century Excellent Talents in University (NCET-12-0419) Hubei National Funds for Distinguished Young Scholars (2014CFA038) 

主　　题：Sorghum stalk Hard carbon Anode Sodium-ion battery Carbonization 

摘      要：Sodium-ion batteries(SIBs) have been considered to be potential candidates for next-generation low-cost energy storage systems due to the low-cost and abundance of Na resources. However, it is a big challenge to find suitable anode materials with low-cost and good performance for the application of SIBs. Hard carbon could be a promising anode material due to high capacity and expectable low-cost if originating from biomass. Herein, we report a hard carbon material derived from abundant and abandoned biomass of sorghum stalk through a simple carbonization method. The effects of carbonization temperature on microstructure and electrochemical performance are investigated. The hard carbon carbonized at 1300 ℃ delivers the best rate capability(172 mAh g^(-1) at 200 mA g^(-1)) and good cycling performance(245 mAh g^(-1) after 50 cycles at 20 mA g^(-1),96% capacity retention). This contribution provides a green route for transforming sorghum stalk waste into treasureof promising low-cost anode material for SIBs.