高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (9): 1949-1954.doi: 10.7503/cjcu20190097

• 物理化学 • 上一篇    下一篇

沉积法合成生物质碳磷锂离子负极材料及其高低温电化学性能

李向南1,2,3,王秋娴3,4,范涌1,于明明1,张会双1,2,3,杨书廷1,2,3,4,*()   

  1. 1. 河南师范大学物理学院, 化学化工学院, 新乡 453007
    2. 动力电源及关键材料国家-地方联合工程实验室, 新乡 453007
    3. 动力电源及关键材料河南省协同创新中心, 新乡 453007
    4. 河南电池研究院, 新乡 453007
  • 收稿日期:2019-02-13 出版日期:2019-09-10 发布日期:2019-07-16
  • 通讯作者: 杨书廷 E-mail:shutingyang@foxmail.com
  • 基金资助:
    河南省重点科技攻关项目(162102210070);新乡市科技发展计划项目(15GY03);河南师范大学大学生创新创业训练计划项目(20170202)

Deposition Method Synthesis of Nano-phosphorus/Biomass Carbon Composites and Their High- and Low-temperature Electrochemical Performances as Anode Material in Lithium-ion Batteries

LI Xiangnan1,2,3,WANG Qiuxian3,4,FAN Yong1,YU Mingming1,ZHANG Huishuang1,2,3,YANG Shuting1,2,3,4,*()   

  1. 1. School of Physics, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
    2. National and Local Joint Engineering Laboratory of Motive Power and Key Materials, Xinxiang 453007, China
    3. Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, Xinxiang 453007, China
    4. Henan Battery Research Institute, Xinxiang 453007, China
  • Received:2019-02-13 Online:2019-09-10 Published:2019-07-16
  • Contact: YANG Shuting E-mail:shutingyang@foxmail.com
  • Supported by:
    ? Supported by the Key Scientific and Technological Project of Henan Province, China(162102210070);the Science and Technology Project of Xinxiang City, China(15GY03);the Student Innovation and Career Exploring Project of Henan Normal University, China(20170202)

摘要:

使用玉米杆芯作为碳源, 通过沉积法原位合成生物质碳磷复合材料. 利用X射线衍射(XRD)、 扫描电子显微镜(SEM)和拉曼光谱(Raman)等对复合材料的形貌和结构进行表征, 通过恒电流充放电、 循环伏安(CV)和交流阻抗(EIS)等对复合材料的电化学性能进行了测试. 结果表明, 当碳/磷质量比为4.5∶5.5时, 复合材料具有最佳的电化学性能: 扣除非活性材料的贡献, 室温下首次充电容量为1215.5 mA·h/g, 循环100次后可以保持847.7 mA·h/g 的比容量. 该复合材料随着温度的升高充电比容量逐渐增加: -20 ℃时, 0.1C倍率下的充电比容量为425.6 mA·h/g; 55 ℃时, 首次充电比容量高达1812.3 mA·h/g. 说明适量纳米磷均匀分布在无定形碳导电基体的孔结构中, 可以使制备出的复合材料现出良好的电化学性能.

关键词: 生物质碳, 碳磷复合, 沉积法合成, 锂离子电池

Abstract:

Using cornstalk core as the carbon source, anode materials P/C with different micro-nano structures were directly synthesized by the deposition method synthesis method. The results show that the CP2[m(P)∶m(C)=4.5∶5.5] assembled lithium-ion battery performed well: the charge capacity of CP2 is 1215.5 mA·h/g at 0.1C(25 ℃), and the reversible capacity is 847.7 mA·h/g after 100 cycles. High- and low-temperature performances were discussed at 0.1C. The results show that the specific capacity of the sample reaches 425.6 mA·h/g at -20 ℃ and 1812.3 mA·h/g at 55 ℃, respectively. An appropriate amount of P distributes uniformly in pores of conductive carbon substrate, so that the lithium-ion battery assembled of this composite show excellent electrical performance.

Key words: Biomass carbon, Carbon/phosphorus composite, Deposition method synthesis, Lithium-ion battery

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