Potential Use of Gas Sensors for Battery Protection Against Thermal Runaway: A Mini Review

Improvements in lithium-ion (Li-ion) battery technology have already begun to open doors to the headway of this which has so broadened the applicability of the batteries to portable electronic, electric automobiles and large capacity energy storage systems. The enduring quality of these batteries enables them to remain widely used in applications that expect high technological requirements with many differentiating factors such as high energy density, long cycle life and low self-discharge rate. Nonetheless, such a wide use also creates a risk that can be managed, and measures are taken to reliably prevent these complex failures or malfunctions like thermal runaway. Thermal runaway is the uncontrolled increase in temperature that leads to the creation of a fire or explosion in Li-ion batteries is an area of major concern and poses serious hazards to property and human life. To overcome these problems, the present work proposes an innovative design of incorporating gas sensors into battery packs as an ancillary feature to address possible damage to the battery. Gas sensors are advantageous because they not only give out warnings but also identify gases emanating in the early age of the battery deterioration phase or rather depletion with respect to the main function of the battery. Carbon dioxide, hydrogen, carbon monoxide and volatile organic compounds are gases released from corrosion or gas evolution which means that the battery is not in its normal state. The technique enables the system to keep track of specific gas emissions and autonomously trigger the Battery Management System (BMS) so that preventative actions can be taken before the accumulation of the gas grids. Incorporating gas sensors increases safety measures in such a way that problems are identified well ahead of the possibility of traditional measures such as voltage and temperature measurements revealing that something is wrong. This not only averts disasters, but also enhances the lifespan of Li-ion batteries due to effective controlling and preserving measures. This investigation highlights the possibility of gas sensors vesting batteries with new safety standards vital for the Li-ion battery reliability in many challenging environments.