Thermal runaway caused fire and explosion of lithium ion battery

Thermal runaway mechanism of lithium ion battery for electric vehicles: A review

This is the first targeted review of the synthesis – microstructure – electrochemical performance relations of MoS2 – based anodes and cathodes for secondary lithium ion batteries (LIBs). Molybdenum disulfide is a highly promising material for LIBs that compensates for its intermediate insertion voltage (∼2 V vs. Li/Li+) with a high reversible capacity (up to 1290 mA h g−1) and an excellent rate capability (e.g. 554 mA h g−1 after 20 cycles at 50 C). Several themes emerge when surveying the scientific literature on the subject: first, we argue that there is excellent data to show that truly nanoscale structures, which often contain a nanodispersed carbon phase, consistently possess superior charge storage capacity and cycling performance. We provide several hypotheses regarding why the measured capacities in such architectures are well above the theoretical predictions of the known MoS2 intercalation and conversion reactions. Second, we highlight the growing microstructural and electrochemical evidence that the layered MoS2 structure does not survive past the initial lithiation cycle, and that subsequently the electrochemically active material is actually elemental sulfur. Third, we show that certain synthesis techniques are consistently demonstrated to be the most promising for battery applications, and describe these in detail. Fourth, we present our selection of synthesis methods that we believe to have a high potential for creating improved MoS2 LIB electrodes, but are yet to be tried.

Lithium ion battery applications of molybdenum disulfide (MoS2) nanocomposites

In this paper, the recent developments and the characteristics of membrane separators for lithium-ion batteries are reviewed. In recent years, there have been intensive efforts to develop advanced battery separators for rechargeable lithium-ion batteries for different applications such as portable electronics, electric vehicles, and energy storage for power grids. The separator is a critical component of lithium-ion batteries since it provides a physical barrier between the positive and negative electrodes in order to prevent electrical short circuits. The separator also serves as the electrolyte reservoir for the transport of ions during the charging and discharging cycles of a battery. The performance of lithium-ion batteries is greatly affected by the materials and structure of the separators. This paper introduces the requirements of battery separators and the structure and properties of five important types of membrane separators which are microporous membranes, modified microporous membranes, non-woven mats, composite membranes and electrolyte membranes. Each separator type has inherent advantages and disadvantages which influence the performance of lithium-ion batteries. The structures, characteristics, manufacturing, modification, and performance of separators are described in this review paper. The outlook and future directions in this research field are also given.

A review of recent developments in membrane separators for rechargeable lithium-ion batteries

Lithium-ion batteries (LIBs) are considered to be one of the most important energy storage technologies. As the energy density of batteries increases, battery safety becomes even more critical if the energy is released unintentionally. Accidents related to fires and explosions of LIBs occur frequently worldwide. Some have caused serious threats to human life and health and have led to numerous product recalls by manufacturers. These incidents are reminders that safety is a prerequisite for batteries, and serious issues need to be resolved before the future application of high-energy battery systems. This Review aims to summarize the fundamentals of the origins of LIB safety issues and highlight recent key progress in materials design to improve LIB safety. We anticipate that this Review will inspire further improvement in battery safety, especially for emerging LIBs with high-energy density.

Materials for lithium-ion battery safety

A novel temperature-sensitive cathode material, LiCoO2@P3DT, exhibits not only improved cycling performance at ambient temperature, but also a thermal shutdown action at an elevated temperature of 110 °C, providing a self-activating thermal protection for lithium ion batteries.

Temperature-sensitive cathode materials for safer lithium-ion batteries

A poly(3-decyl thiophene)-modified separator with self-actuating overcharge protection mechanism for LiFePO4-based lithium ion battery

A polytriphenylamine-modified separator with reversible overcharge protection for 3.6 V-class lithium-ion battery

http://ma.ecsdl.org/content/MA2010-03/1/141.full.pdf

Suli Li

Papers

Temperature-sensitive cathode materials for safer lithium-ion batteries

A poly(3-decyl thiophene)-modified separator with self-actuating overcharge protection mechanism for LiFePO4-based lithium ion battery

A polytriphenylamine-modified separator with reversible overcharge protection for 3.6 V-class lithium-ion battery

A Poly (3-decyl thiophene)-Modified Separator with Self-Actuating Overcharge Protection Mechanism for LiFePO4 -Based Lithium-Ion Battery

Diphenylamine: A safety electrolyte additive for reversible overcharge protection of 3.6 V-class lithium ion batteries