锂离子电池负极材料钛酸锂的研究进展

doi:10.12028/j.issn.2095-4239.2018.0008

摘要/Abstract

摘要： 锂离子电池凭借诸多优势广泛应用于便携式电子产品（3C）领域，在电动汽车及可穿戴设备方面具有巨大应用前景，是未来最具潜力的储能电池之一。作为一种锂离子电池负极材料，尖晶石型Li₄Ti₅O₁₂相比石墨负极具有较高嵌锂电位，且"零应变材料"的特性决定Li₄Ti₅O₁₂材料具有较好的循环稳定性及热稳定性，从而备受关注。本文简要介绍了钛酸锂（Li₄Ti₅O₁₂）的结构和性能，详细阐明了Li₄Ti₅O₁₂的嵌锂机制、制备及改性方法，总结了相应制备及改性方法对Li₄Ti₅O₁₂材料的充放电特性、循环性能等电化学性能的影响，针对Li₄Ti₅O₁₂的胀气产生原因、机制和胀气解决方法进行简单阐述，并对纯电动乘用车的应用前景提出了几点建议。

关键词: 锂离子电池, 负极材料, 钛酸锂, 零应变材料

Abstract: Lithium-ion battery, which has a great successful application in the portable electronics, is believed the most promising power source for electric vehicles and wearable devices. Moreover, it also has a great potential in application of mass energy storage. As the anode material of lithium-ion battery, spinel lithium titanate (Li₄Ti₅O₁₂) has been intensively studied as a promising alternative to graphite, given to its high potential during charging and discharging, excellent cycling stability, and high thermal stability and safety, which are associated with its zero-strain character. In this review, the structure and performance of Li₄Ti₅O₁₂ were introduced briefly. The mechanism of lithium inserting, synthetic and modification methods for Li₄Ti₅O₁₂as anode material for Lithium-ion battery were reviewed, and the effect of synthetic and modification methods on electrochemical performance such as charge and discharge capability, cycle performance of Li₄Ti₅O₁₂was analyzed. The influencing factors and possible mechanism for gassing behavior in battery working process and the suppressing methods are briefly described. Moreover, suggestions on the prospect of the application of electric vehicles (EVs) in China are also put forward in this review.

Key words: lithium ion battery, anode materials, lithium titanate, zero-strain materials

中图分类号:

TM911

刘鲁静, 贾志军, 王毅, 齐涛. 锂离子电池负极材料钛酸锂的研究进展[J]. 储能科学与技术, 2018, 7(S1): 17-25.

LIU Lujing, JIA Zhijun, WANG Yi, QI Tao. Recent research progress of Li₄Ti₅O₁₂ as anode materials for lithium-ion batteries[J]. Energy Storage Science and Technology, 2018, 7(S1): 17-25.

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