| 利用碳纳米管增强Li/CFx一次电池的性能 |
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| 引用本文： | 陈珑,孙晓刚,邱治文,蔡满园,刘珍红,王杰,陈玮,李旭.利用碳纳米管增强Li/CFx一次电池的性能[J].材料导报,2017,31(Z1):6-10. |
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| 作者姓名： | 陈珑 孙晓刚 邱治文 蔡满园 刘珍红 王杰 陈玮 李旭 |
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| 作者单位： | 南昌大学机电工程学院, 南昌 330031,南昌大学机电工程学院, 南昌 330031,南昌大学机电工程学院, 南昌 330031,南昌大学机电工程学院, 南昌 330031,南昌大学机电工程学院, 南昌 330031,南昌大学机电工程学院, 南昌 330031,南昌大学机电工程学院, 南昌 330031,南昌大学机电工程学院, 南昌 330031 |
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| 基金项目： | 江西省科技厅科研项目(20142BBE50071)；江西省教育厅(KJLD13006) |
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| 摘 要： | 以碳纳米管(Multi-walled carbon nanotubes)为导电添加剂,对锂/氟化石墨(Li/CFx)一次电池正极活性材料氟化石墨进行改性。采用TGA、Raman、SEM、TEM对氟化石墨和碳纳米管进行表征分析。采用恒流放电和电化学阻抗频谱对电池进行检测。结果表明,添加碳纳米管能够有效改善电池的综合性能。碳纳米管添加量为5%(质量分数),在1C放电倍率时,电池的放电比容量达到900mAh/g,并具有2.2V放电电压平台,对比超级炭黑导电剂598.5mAh/g的放电比容量和2V的放电平台,电池放电比容量和电压平台分别提高50.2%和10%,电池的倍率性明显改善。电化学阻抗频谱也显示,添加碳纳米管能有效减小电池的内阻,改善放电性能。
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| 关 键 词： | 碳纳米管 氟化石墨 锂/氟化石墨电池 石墨化 |
Improving Performance of Primary Li/CFx Battery by Using Carbon Nanotubes |
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| CHEN Long,SUN Xiaogang,QIU Zhiwen,CAI Manyuan,LIU Zhenhong,WANG Jie,CHEN Wei and LI Xu.Improving Performance of Primary Li/CFx Battery by Using Carbon Nanotubes[J].Materials Review,2017,31(Z1):6-10. |
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| Authors: | CHEN Long SUN Xiaogang QIU Zhiwen CAI Manyuan LIU Zhenhong WANG Jie CHEN Wei and LI Xu |
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| Affiliation: | School of Mechantronics Engineering, Nanchang University, Nanchang 330031,School of Mechantronics Engineering, Nanchang University, Nanchang 330031,School of Mechantronics Engineering, Nanchang University, Nanchang 330031,School of Mechantronics Engineering, Nanchang University, Nanchang 330031,School of Mechantronics Engineering, Nanchang University, Nanchang 330031,School of Mechantronics Engineering, Nanchang University, Nanchang 330031,School of Mechantronics Engineering, Nanchang University, Nanchang 330031 and School of Mechantronics Engineering, Nanchang University, Nanchang 330031 |
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| Abstract: | The multiwalled carbon nanotubes (MWCNTs) were used as the conductive additive to improve the performance of the Li/CFx primary battery. The TGA, Raman, SEM and TEM were utilized to characterize the MWCNTs and electrodes. The cells were tested by constant current discharge and electrochemical impedance spectra (EIS). The results show that the specific capacity of batteries was greatly improved at 1C discharge with 5% addition of carbon nanotubes. The discharge capacity and discharge voltage platform increased to 900 mAh/g and 2.2 V from 598.5 mAh/g and 2 V with a 50.2% and 10% enhancement. The EIS also indicated the inter resistance of batteries obviouly decreased and the performance of dischage effectively enhanced with the addition of MWCNTs. |
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| Keywords: | carbon nanotubes carbon fluoride primary lithium/carbon monofluoride battery graphitization |
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