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Studies of Ozone-Sensitized Low- and High-Temperature Oxidations of Diethyl Carbonate by Hao Zhao; Shixiang Liu; Chao Yan; Can Huang; Yongfeng Qi; Feng Zhang; Yiguang Ju is a Chemistry article available to read on EtoBox.

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Diethyl carbonate (DEC) oxidation with different levels of O addition was performed in an atmospheric laminar flow reactor from 400 to 850 K. Experimental results showed that, without O addition, the oxidation of DEC began from 650 K with no low-temperature reactivity, while with O addition the low-temperature chemistry of DEC was observed from 450 K. A DEC/O kinetic model was developed, and the model predictions agreed with the experimental data reasonably well with a slight overprediction of DEC oxidation between 550 and 750 K. The low-temperature chemistry of DEC with O addition was described in the reaction pathway of DEC. It was found that O assisted the low-temperature oxidation of DEC mainly through the production of the active O: atom instead of the direct reaction with the fuel molecule. The present work indicated that the Li-ion battery degradation at 400-500 K might result from the low-temperature chemistry of DEC with active oxygen supplies from the cathode metal oxide materials or from singlet O during the battery discharge process. This article used O to mimic the oxidizing environment in the Li-ion battery by providing active atomic oxygen. It provided insights into

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Author

Hao Zhao; Shixiang Liu; Chao Yan; Can Huang; Yongfeng Qi; Feng Zhang; Yiguang Ju

Publisher

American Chemical Society (ACS)

Published

2021

Language

EN

Field

Chemistry (Physical Sciences)