Gassing in Li4Ti5O12-based batteries and its remedy

Yan Bing He; Baohua Li; Ming Liu; Chen Zhang; Wei Lv; Cheng Yang; Jia Li; Hongda Du; Biao Zhang; Quan Hong Yang; Jang Kyo Kim; Feiyu Kang

doi:10.1038/srep00913

Gassing in Li₄Ti₅O₁₂-based batteries and its remedy

Yan Bing He, Baohua Li, Ming Liu, Chen Zhang, Wei Lv, Cheng Yang, Jia Li, Hongda Du, Biao Zhang, Quan Hong Yang, Jang Kyo Kim, Feiyu Kang

Research output: Journal article publication › Journal article › Academic research › peer-review

308 Citations (Scopus)

Abstract

Destructive gas generation with associated swelling has been a major challenge to the large-scale application of lithium ion batteries (LIBs) made from Li4Ti5O12(LTO) anodes. Here we report root causes of the gassing behavior, and suggest remedy to suppress it. The generated gases mainly contain H 2, CO 2 and CO, which originate from interfacial reactions between LTO and surrounding alkyl carbonate solvents. The reactions occur at the very thin outermost surface of LTO (111) plane, which result in transformation from (111) to (222) plane and formation of (101) plane of anatase TiO2. A nanoscale carbon coating along with a stable solid electrolyte interface (SEI) film around LTO is seen most effective as a barrier layer in suppressing the interfacial reaction and resulting gassing from the LTO surface. Such an ability to tune the interface nanostructure of electrodes has practical implications in the design of next-generation high power LIBs.

Original language	English
Article number	913
Journal	Scientific Reports
Volume	2
DOIs	https://doi.org/10.1038/srep00913
Publication status	Published - 14 Dec 2012
Externally published	Yes

ASJC Scopus subject areas

General

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

More information

10.1038/srep00913

Cite this

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title = "Gassing in Li4Ti5O12-based batteries and its remedy",

abstract = "Destructive gas generation with associated swelling has been a major challenge to the large-scale application of lithium ion batteries (LIBs) made from Li4Ti5O12(LTO) anodes. Here we report root causes of the gassing behavior, and suggest remedy to suppress it. The generated gases mainly contain H 2, CO 2 and CO, which originate from interfacial reactions between LTO and surrounding alkyl carbonate solvents. The reactions occur at the very thin outermost surface of LTO (111) plane, which result in transformation from (111) to (222) plane and formation of (101) plane of anatase TiO2. A nanoscale carbon coating along with a stable solid electrolyte interface (SEI) film around LTO is seen most effective as a barrier layer in suppressing the interfacial reaction and resulting gassing from the LTO surface. Such an ability to tune the interface nanostructure of electrodes has practical implications in the design of next-generation high power LIBs.",

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AU - He, Yan Bing

AU - Li, Baohua

AU - Liu, Ming

AU - Zhang, Chen

AU - Lv, Wei

AU - Yang, Cheng

AU - Li, Jia

AU - Du, Hongda

AU - Zhang, Biao

AU - Yang, Quan Hong

AU - Kim, Jang Kyo

AU - Kang, Feiyu

PY - 2012/12/14

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AB - Destructive gas generation with associated swelling has been a major challenge to the large-scale application of lithium ion batteries (LIBs) made from Li4Ti5O12(LTO) anodes. Here we report root causes of the gassing behavior, and suggest remedy to suppress it. The generated gases mainly contain H 2, CO 2 and CO, which originate from interfacial reactions between LTO and surrounding alkyl carbonate solvents. The reactions occur at the very thin outermost surface of LTO (111) plane, which result in transformation from (111) to (222) plane and formation of (101) plane of anatase TiO2. A nanoscale carbon coating along with a stable solid electrolyte interface (SEI) film around LTO is seen most effective as a barrier layer in suppressing the interfacial reaction and resulting gassing from the LTO surface. Such an ability to tune the interface nanostructure of electrodes has practical implications in the design of next-generation high power LIBs.

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