天津力神电池股份有限公司
纸质出版:2022
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薛有宝, 万柳, 张凯博, 等. 温度对磷酸铁锂电池化成效果的影响[J]. 能源研究与管理, 2022,(4):104-109.
薛有宝, 万柳, 张凯博, et al. Effect of Temperature on the Formation Result of Lithium Iron Phosphate Battery[J]. 2022, (4): 104-109.
薛有宝, 万柳, 张凯博, 等. 温度对磷酸铁锂电池化成效果的影响[J]. 能源研究与管理, 2022,(4):104-109. DOI: 10.16056/j.2096-7705.2022.04.017.
薛有宝, 万柳, 张凯博, et al. Effect of Temperature on the Formation Result of Lithium Iron Phosphate Battery[J]. 2022, (4): 104-109. DOI: 10.16056/j.2096-7705.2022.04.017.
为优化磷酸铁锂电池化成工艺参数,对比了25℃和20℃2个温度对化成效果的影响,从电解液黏度及电导率、容量-电压微分曲线、电极片和卷芯厚度、负极形貌及元素成分、负极粉料热稳定性方面进行了对比。结果表明:化成温度降低,化成效果较差,电解液黏度增大35.2%,电导率降低7.1%,容量-电压微分曲线峰位1降低,峰位2升高,负极片厚度增加12.9%,卷芯厚度增加3.4%,负极片表面有明显的颗粒凸起,出现大量的氧元素,且从箔材侧到隔膜侧含量递增,出现明显的放热峰,初步认为是受负极成膜时电解液去溶剂化困难导致锂离子与溶剂共嵌入石墨的影响。采用对卷芯施加力的方法可改善化成温度降低引起的化成不良。该结果对于商业生产中化成工艺参数的设定、过程控制、失效分析等方面具有重要指导意义。
In order to optimize the formation process parameters of lithium iron phosphate battery
the effects of 25 ℃ and20 ℃ on the formation result were compared
the viscosity and conductivity of electrolyte
capacity-voltage differential curve
thickness of negative electrode and jelly roll
morphology and element composition of negative electrode
thermal stability of negative powders were analyzed. The results showed that the viscosity and conductivity of electrolyte increased by 35.2% and decreased by 7.1%
respectively
the peak 1 of capacity-voltage differential curve decreased
the peak 2 increased
and the thickness of negative electrode increased by 12.9%
the thickness of the jelly roll increased by 3.4%
the surface of the negative electrode had obvious particle bulge
a large amount of oxygen element appeared
and the content of oxygen increased from the foil side to the separator side
and an obvious exothermic peak appeared
it is believed preliminarily that the co-intercalation of lithium ion and solvents into graphite is caused by the difficulty of electrolyte desolvation during the formation. The formation defect caused by low formation temperature could be improved by applying force on the jelly roll.The results have important guiding significance for the setting of process parameters
process control and failure analysis in commercial production.
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束缚力对磷酸铁锂电池安全性影响[J]. 刘伯峥;曹六阳;曾涛;殷雅侠;郭玉国.储能科学与技术,2022(08)
锂金属电池固态电解质材料研究进展[J]. 赵彬涛.能源研究与管理,2022(02)
化成充电SOC对软包磷酸铁锂电池性能的影响[J]. 魏佳骏;弓梦丽.广东化工,2022(03)
LiFePO_4涂覆量对锂离子电池性能的影响[J]. 刘伯峥;李海婷;曾涛;伍绍中.电池,2021(05)
磷酸铁锂正极材料改性研究进展[J]. 冯晓晗;孙杰;何健豪;魏义华;周成冈;孙睿敏.储能科学与技术,2022(02)
金属有机骨架及其衍生结构在锂硫电池中的应用[J]. 崔肖;张正富;王劲松;万润东;赵微微.能源研究与管理,2021(01)
机械压力对锂电池性能影响的研究进展[J]. 崔锦;石川;赵金保.化工学报,2021(07)
磷酸铁锂锂离子电池化成产气的机理[J]. 夏玉佳;朱振东.电池,2020(06)
锂离子电池负极满嵌锂石墨的热稳定性[J]. 吴欢欢;代娟;朱振东;彭文.电池,2020(05)
磷酸铁锂动力电池电解液改善及过程参数优化[J]. 刁志中;刘恋;王永武;张娜.电源技术,2019(03)
预处理流程对磷酸铁锂动力电池性能的影响[J]. 刁志中;刘恋;王永武;高飞;张娜.电源技术,2018(05)
化成工艺对磷酸铁锂锂离子电池性能的影响[J]. 闻人红雁;毛松科;田德祥.材料科学与工程学报,2016(03)
两种不同化成工艺对锂离子电池性能的影响[J]. 张沿江;武行兵;臧强;王双双;姜雨恒.电源技术,2015(07)
锂离子电池电解液添加剂的研究进展[J]. 陈高明;胡立新;王超.能源研究与管理,2011(02)
Potentiometric Measurement to Probe Solvation Energy and Its Correlation to Lithium Battery Cyclability.[J]. Kim Sang Cheol;Kong Xian;Vilá Rafael A;Huang William;Chen Yuelang;Boyle David T;Yu Zhiao;Wang Hansen;Bao Zhenan;Qin Jian;Cui Yi.Journal of the American Chemical Society,2021
Tailoring Electrolyte Solvation for Li Metal Batteries Cycled at Ultra-Low Temperature.[J]. Holoubek John;Liu Haodong;Wu Zhaohui;Yin Yijie;Xing Xing;Cai Guorui;Yu Sicen;Zhou Hongyao;Pascal Tod A;Chen Zheng;Liu Ping.Nature energy,2021
A review on energy chemistry of fast-charging anodes.[J]. Cai Wenlong;Yao Yu-Xing;Zhu Gao-Long;Yan Chong;Jiang Li-Li;He Chuanxin;Huang Jia-Qi;Zhang Qiang.Chemical Society reviews,2020(12)
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