Thermal stability of silicon negative electrode for Li-ion batteries

Zhao, Liwei; Han, Seung Heon; Okada, Shigeto; Na, Byung Ki; Takeno, Kazuhiko; Yamaki, Jun Ichi

doi:10.1016/j.jpowsour.2011.11.068

Cited by 20 publications

(12 citation statements)

References 31 publications

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“…Zhao and coworkers conducted systematic works (Zhao et al, 2012;Fan et al, 2016) on thermal stability of lithiated graphite and SiO. They found that the crosstalk between electrolyte and electrode had significant influence on the thermal behavior of anodes, not only on exothermic temperature, but also on the heat generation quantity as shown in Figure 5.…”

Section: Anode Materialsmentioning

confidence: 99%

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Safety Issues in Lithium Ion Batteries: Materials and Cell Design

et al. 2019

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As the most widely used energy storage device in consumer electronic and electric vehicle fields, lithium ion battery (LIB) is closely related to our daily lives, on which its safety is of paramount importance. LIB is a typical multidisciplinary product. A tiny single cell is composed of both organic and inorganic materials in multi scale. In addition, its relatively closure property made it difficult to be studied on line, let alone in the battery pack or system level. Safety, often manifested by stability on abuse, including mechanical, electrical, and thermal abuses, is a quite complicated issue of LIB. Safety has to be guaranteed in large scale application. Here, safety issues related to key materials and cell design techniques will be reviewed. Key materials, including cathode, anode, electrolyte, and separator, are the fundamental of the battery. Cell design and fabrication techniques also have significant influence on the cell's electrochemical and safety performances. Here, we will summarize the thermal runaway process in single cell level, and some recent advances on battery materials and cell design.

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Section: Anode Materialsmentioning

confidence: 99%

“…DSC curves of (a) 0.5µL, 1 M LiPF 6 /EC-DMC (1:1, v/v) electrolyte and a mixture of 0.5µL electrolyte and 0.5 mg of (b) pristine Si/C electrode, (c) delithiated Si/C electrode, and (d) lithiated Si/C electrode. Reprinted fromZhao et al (2012). Copyright (2012), with permission from Elsevier.…”

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confidence: 99%

Safety Issues in Lithium Ion Batteries: Materials and Cell Design

et al. 2019

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“…Silicon is one of the candidates replacing the graphite because of its high theoretical capacity of~4200 mAh g −1 (Li 4 · 4 Si) and low discharge potential (~0.5 V vs Li/Li + ) [3,4]. However, the large volume change (up to 300 %) of silicon during lithium alloying and lithium de-alloying results in pulverization, disconnection of electrical contacts, instability of the solid electrolyte interphase (SEI), and rapid capacity fade [5,6]. Besides, the low electronic conductivity greatly hinders its practical application [7].…”

Section: Introductionmentioning

confidence: 99%

Nano-silicon/polyaniline composites with an enhanced reversible capacity as anode materials for lithium ion batteries

Feng

Tian

Xie

et al. 2015

J Solid State Electrochem

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Silicon nanoparticles are coated with the conductive polyaniline (PANI) using in situ polymerization method as anode materials to improve the electrochemical performance for lithium ion batteries. At first, the physicochemical and electrochemical properties of the doped polyaniline in the lithium ion electrolyte are investigated. After that, the effect of different contents of PANI for preparing Si/PANI composites on the composition and structure and thus the electrochemical performance are investigated. The structure and morphology of asprepared materials are characterized systematically by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). It is demonstrated that the silicon/polyaniline composite presents the core/shell structure. The Si/PANI composite with 12.3 wt% PANI exhibits the optimum electrochemical performance. The electrode still maintains better reversible capacity of 766.6 mAh g −1 , and the capacity retention of 72 % is retained after 50 cycles at current density of 2 A g −1 . The good electrochemical properties can be attributed to the PANI-coating layer, which can improve the electrical conductivity of the Si-based anode materials for lithium ion batteries and accommodate the volume change of silicon during the charge-discharge processes.

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“…Figure 7 shows the variation of the heat value of peaks at above 250°C on the ). 29 Hence, the SiO electrode gave much less exothermic heat than the graphite electrode, indicating that the SiO can be thermally safer than graphite.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Properties and Thermal Stability of Silicon Monoxide Anode for Rechargeable Lithium-Ion Batteries

Fan

et al. 2016

Electrochemistry

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Silicon monoxide (SiO) is utilized as an anode material in Li-ion batteries. The electrochemical properties of the SiO anodes are investigated. The SiO exhibits a high initial capacity of~2083 mAh g −1 , while it has poor cycling stability. Thermal properties of SiO electrodes in mixing with or without the electrolyte are investigated by using DSC for the first time. Both lithiated and delithiated SiO electrodes show exothermic peaks in DSC curves, presumably due to the decomposition of electrodes. By changing the ratio between the cycled electrodes to the electrolytes, thermal behavior of the mixtures is studied in detail. The dominant exothermic peak at around 290°C is attributed to the reactions between lithiated electrode and electrolyte after the thermal breakdown of the SEI. Li in the electrodes and electrolytes should be responsible for the thermal risk in application of SiO batteries. The heat value of SiO based on capacity is estimated to be 1.85 J mAh ). Hence, the SiO can be thermally safer than graphite.

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Thermal stability of silicon negative electrode for Li-ion batteries

Cited by 20 publications

References 31 publications

Safety Issues in Lithium Ion Batteries: Materials and Cell Design

Safety Issues in Lithium Ion Batteries: Materials and Cell Design

Nano-silicon/polyaniline composites with an enhanced reversible capacity as anode materials for lithium ion batteries

Electrochemical Properties and Thermal Stability of Silicon Monoxide Anode for Rechargeable Lithium-Ion Batteries

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