涂碳铝箔对磷酸铁锂电池性能影响研究

引用本文: 邓龙征, 吴锋, 高旭光, 谢海明, 杨智伟. 涂碳铝箔对磷酸铁锂电池性能影响研究[J]. 无机化学学报, 2014, 30(4): 770-778. doi: 10.11862/CJIC.2014.047 shu

Citation: DENG Long-Zheng, WU Feng, GAO Xu-Guang, XIE Hai-Ming, YANG Zhi-Wei. Effects of Coating Carbon Aluminum Foil on the Battery Performance[J]. Chinese Journal of Inorganic Chemistry, 2014, 30(4): 770-778. doi: 10.11862/CJIC.2014.047 shu

涂碳铝箔对磷酸铁锂电池性能影响研究

邓龙征 ^1, ,
吴锋 ^{1,
,} ,
高旭光 ^2, ,
谢海明 ^2, ,
杨智伟 ^3,

通讯作者: 吴锋 wufeng863@vip.sina.com

基金项目:
国家973项目(No.2009CB220100)；动力电池及化学能源材料北京市高等学校工程研究中心开放基金资助课题(2013)；高性能二次动力电池及关键材料；技术的合作研究(No.2010DFB63370)；面向中美清洁能源合作的电动汽车前沿技术研究(No.2010DFA72760) (No.2009CB220100)；动力电池及化学能源材料北京市高等学校工程研究中心开放基金资助课题(2013)；高性能二次动力电池及关键材料；技术的合作研究(No.2010DFB63370)；面向中美清洁能源合作的电动汽车前沿技术研究(No.2010DFA72760)

中央高校基本科研业务费(No.12QNJJ013)资助项目。 (No.12QNJJ013)

摘要: 本文研究了使用涂碳铝箔作为正极集流体磷酸铁锂电池的性能。研究对比了使用普通铝箔和涂层铝箔的10Ah软包磷酸铁锂电池的主要性能。研究表明：使用涂层铝箔不但可以提高磷酸铁锂材料的粘结性,而且使用导电涂层可以有效降低正极材料和集流体的接触内阻,从而减小电池内阻,提高电池倍率性能。与使用普通铝箔作为集流体相比,通过使用涂碳铝箔可以使得电池的内阻降低65%左右,但是,磷酸铁锂正极材料的克容量却偏低约5~10mAh·g^-1,首次效率也偏低4%左右；在快速放电15C倍率下,使用涂碳铝箔的电芯比使用普通铝箔容量提高约15%左右,10C放电倍率下,平台增加0.3~0.4V；使用涂碳铝箔电芯的常温自放电率较高,但容量恢复率也较高；550周循环下,使用涂碳铝箔可以使得电池的循环性能提高约1%。而在电池低温性能方面,使用涂碳铝箔对低温性能并无改善。

关键词:

磷酸铁锂电池;涂碳铝箔;集流体;倍率性能;循环性能

English

Effects of Coating Carbon Aluminum Foil on the Battery Performance

1.
1 School of Chemical Engineering and the Environment, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;

Corresponding author: 吴锋 wufeng863@vip.sina.com

Received Date: 12 July 2013
Fund Project:
国家973项目(No.2009CB220100)；动力电池及化学能源材料北京市高等学校工程研究中心开放基金资助课题(2013)；高性能二次动力电池及关键材料；技术的合作研究(No.2010DFB63370)；面向中美清洁能源合作的电动汽车前沿技术研究(No.2010DFA72760)

中央高校基本科研业务费(No.12QNJJ013)资助项目。

Abstract: The LiFePO₄-based battery properties were studied by using aluminum foil current collector coated with a conductive carbon film. The main properties of LiFePO₄ type battery with 10 Ah capacity were also compared by using common aluminum foil and coating carbon aluminum foil (CCAF) from different providers. The results showed that the using of CCAF current collector not only can improve the cohesiveness between the cathode powder and the current collector but can effectively reduce the contact resistance of the cathode material and the current collector, so as to reduce the direct current resistance (DCR) of the battery, and improve the rate performance of the battery. Compared with using common aluminum foil, the DCR is reduced by about 65% with using the CCAF as current collector. But the specific discharge capacity of cathode material is reduced by 5~10 mAh·g^-1. And the 1^st efficiency is also reduced by 4%; At large discharge rate of 15C rate, the discharge capacity of the cell with using CCAF is more than about 15% in contrast to the cell with common aluminum foil as a current collector. And at 10Cdischarge rate, the voltage plateau increased by 0.3~0.4 V with CCAF; But the self-discharge ratio of cell with CCAF is higher at room temperature, and its recovery rate of the capacity is also higher; After 500 cycles, the cyclic capability of the cell with using CCAFcan increase by about 2% in contrast to the cell with the common aluminum foil as current collector. But the discharge property at low temperature is not improved by the use of CCAF as current collector.

Key words:

LiFePO₄ battery;coating carbon aluminum foil;current collector;rate performance;cycle performance

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

涂碳铝箔对磷酸铁锂电池性能影响研究

通讯作者: 吴锋 wufeng863@vip.sina.com

English

Effects of Coating Carbon Aluminum Foil on the Battery Performance

Corresponding author: 吴锋 wufeng863@vip.sina.com

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

涂碳铝箔对磷酸铁锂电池性能影响研究

通讯作者: 吴锋 wufeng863@vip.sina.com

English

Effects of Coating Carbon Aluminum Foil on the Battery Performance

Corresponding author: 吴锋 wufeng863@vip.sina.com

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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