High Response and Selectivity of the SnO₂ Nanobox Gas Sensor for Ethyl Methyl Carbonate Leakage Detection in a Lithium-Ion battery

Abstract

It is well-known that metal-oxide semiconductors (MOS) have significant gas sensing activity and are widely used in harmful gas monitoring in various environments. With the rapid development of new energy vehicles, the monitoring of the gas composition and concentration in LIB has become an effective way to avoid safety problems. However, the study of typical electrolyte solvent detection, such as EMC and DMC detection by the MOS sensor, is still in its infancy. Here, the SnO 2 nanoboxes are synthesized by coordination dissolution using cubic Cu 2 O as the template, and its sensor shows high sensitivity (0.27 to 10 ppb EMC), excellent response (32.46 to 20 ppm EMC), and superior selectivity. Additionally, the sensor possesses fast and clear response to lithium-ion battery (LIB) leakage simulation tests, suggesting that it should be a promising candidate for LIB safety monitors. These sensing performances are attributed to large specific surface area, small grain size, and high size/thickness ratio of nanoboxes. More importantly, DFT calculations confirm the adsorption of EMC on the surface of the SnO 2 nanoboxes, and the EMC decomposition processes catalyzed by SnO 2 are deduced by in situ FTIR and GC-MS.

Design of Wide‐Temperature Lithium‐Sulfur Batteries

“…[1][2][3][4][5] However, to maximize the benefits of renewable energy sources and reduce our overall carbon emissions, developing and using cutting-edge energy technologies is one of the current research centers. [6][7][8][9][10][11] Lithium metal, with its high theoretical capacity (3860 mAh g À 1 ) and lowest redox potential, is one of the most promising anode materials for advanced batteries with high energy density. [12][13][14] Among other things, the energy density of the ubiquitous lithium-ion battery is rapidly approaching its theoretical limit.…”