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甘蔗渣制备的多孔碳材料的储锂性能研究 预览 被引量:1

Porous carbon materials derived from bagasse and their Li ions storage performances
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摘要 针对商业化石墨的理论容量及其他碳基材料昂贵的制备成本等问题,需要寻找1种低成本的新型碳材料。以甘蔗渣为碳源,采用水热碱活化的方法制备多孔活性炭材料,并与传统活化方法制备的活性炭作对比。通过XRD、SEM、BET及电化学性能测试对多孔活性炭材料的性能进行表征。研究结果表明:作为锂离子电池负极材料,水热活性炭(HAC)表现出比传统方法制备的活性炭(TAC)更高的比容量及更好的循环性能(100次循环后仍保持371.3mAh/g的比容量),其主要原因在于HAC独特的分层多孔结构和高比表面积。 Commercial graphite for lithium batteries can not meet the future demand due to their low theoritical capacity.Although carbon-based materials have improved the performance of lithium ion batteries to some extent,the high cost has prevented its development.Therefore,current studies are focusing on looking for low cost carbon-based materials.Here,porous activated carbon materials were prepared via hydrothermal alkali activation method using bassage as carbon source.The crystal structure,surface morphology,surface area,electrochemical performance of the porous carbons were characterized by X-ray diffraction,SEM,BET-surface area analyzer and electrochemical workstation,respectively.As anode material for lithium ion batteries,hydrothermal activated carbon(HAC)exhibits high specific capacity and better cyclic performance(371.3 mAh/g after 100cycles)than traditional activated carbon(TAC)prepared by conventional methods,which can be attributed to the unique hierarchical porous structures and high specific surface area.
作者 陈民生 颜东亮 赵昀云 张秀云 朱归胜 徐华蕊 CHEN Minsheng1,2, YAN Dongliang1,2, ZHAO Yunyun1,2, ZHANG Xiuyun1,2, ZHU Guisheng1,2, XU Huarui1,2(1. Guangxi Key Laboratory of Information Materials , Guilin University of Electronic Technology ,Guilin, Guangxi 541004, China; 2. Guangxi Experimental Center of Infor-mation Science , Guilin University of Electronic Technology, Guilin, Guangxi 541004, China)
出处 《中国科技论文》 北大核心 2017年第10期1193-1197,共5页
基金 国家自然科学基金资助项目(51564006) 广西自然科学基金资助项目(2016GXNSFAA380205)
关键词 锂离子电池 碳材料 甘蔗渣 负极材料 水热活化 lithium-ion battery carbon materials bagasse anode material hydrothermal activation
作者简介 第一作者:陈民生(1990-),男,硕士研究生,主要研究方向为锂离子电池电极材料 通信作者:颜东亮,教授,主要研究方向为储能材料,dlyan@guet.edu.cn
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