锂离子电池浆料的制备技术及其影响因素
Fabricating technology and influence factors of slurries in Li-ion batteries
查看参考文献72篇
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文摘
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新能源汽车行业的蓬勃发展对高性能锂离子电池需求越来越迫切。作为锂离子电池的重要组成部分,电极性能对于锂离子电池整体性能的影响十分显著。而在电极中,作为多组分混合物浆料的均匀性和稳定性对于电极片性能的影响巨大。但是目前研究者们的重点通常都是放在电极特性和电池组装工艺上,对决定电池性能浆料的特性研究较少。电极组分的均匀性是由浆料组分的均匀性和稳定性决定,而浆料是一种多组分悬浮颗粒组成的复杂体系,其均匀性和稳定性难以直接观测,浆料的流变性能是当前能反映浆料均匀性和稳定性的最有效的指标参数。本文阐述了近年来锂离子电池电极浆料制造过程中活性物质、黏结剂、导电剂、溶剂、分散添加剂、pH值、温度、混合步骤对浆料流变性能的影响,总结了这些因素对浆料流变性能的影响规律,为研制出更加均匀和稳定的浆料体系及高性能锂离子电池提供一定的指导作用。 |
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其他语种文摘
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The rapid development of new energy vehicles places a more and more urgent demand for high-performance lithium-ion batteries.As an important part of lithium-ion battery,the electrode performance has a significant impact on the overall performance of lithium-ion battery.In the electrode,the uniformity and stability of the slurry,which is a multi-component mixture,own a great influence on the performance of the electrode sheet.However,most of the current researchers' interests are usually placed after the slurry process,that is,only focus on the performance of the electrode,but ignore the slurry which is the preconditions of the performance of the electrode.Uniformity of the electrode is determined by the uniformity and stability of slurries.However,as a complicated mixture of multicomponent suspended particles,it's hard to measure the uniformity and stability of the slurry directly.At present,the rheological property test of the slurry is the most effective method to characterize the uniformity and stability of the slurry.In this paper,the effects of active materials,binders,conductive agents,solvents,dispersing additives,pH value,temperature,mixing steps on the rheological properties of the slurry during the manufacturing of lithium ion battery electrode pastes were reviewed.The influence of these factors on the rheological properties of the slurry was summarized,which provides a certain guiding role for fabricating slurries with higher uniformity and stability and developing high performance Li-ion batteries. |
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来源
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材料工程
,2021,49(7):21-34 【核心库】
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DOI
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10.11868/j.issn.1001-4381.2020.000088
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关键词
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锂离子电池
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电极浆料
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流变特性
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均匀性
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稳定性
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地址
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有研科技集团有限公司, 国家动力电池创新中心, 北京, 100088
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国联汽车动力电池研究院有限责任公司, 北京, 100088
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北京有色金属研究总院, 北京, 100088
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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1001-4381 |
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学科
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化学;电工技术 |
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基金
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北京市自然科学基金-海淀原始创新联合基金资助项目
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怀柔区科技计划
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国家重点研发计划
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文献收藏号
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CSCD:7010944
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