Accelerated Electrochemical Decomposition of Li2O2 under X-ray Illumination
2013 (English)In: Journal of Physical Chemistry Letters, ISSN 1948-7185, E-ISSN 1948-7185, Vol. 4, no 23, 4045-4050 p.Article in journal (Refereed) Published
This work presents the first report detailing the effect of X-rays on the electrochemical decomposition of Li2O2, which is the main reaction during the charging process in a Li-O-2 battery. An operando synchrotron radiation powder X-ray diffraction (SR-PXD) experiment was performed. The results indicate that the electrochemical decomposition of Li2O2 is dramatically accelerated under X-ray irradiation. The accelerated decomposition of Li2O2 follows a zero-order reaction, and the decomposition rate constant is proportional to the intensity of X-ray used. A mechanism for the electrochemical decomposition of Li2O2 under X-ray irradiation is proposed. These results give an insight into the charging process in Li-O-2 batteries.
Place, publisher, year, edition, pages
2013. Vol. 4, no 23, 4045-4050 p.
IdentifiersURN: urn:nbn:se:uu:diva-214019DOI: 10.1021/jz402230sISI: 000328101000005OAI: oai:DiVA.org:uu-214019DiVA: diva2:684252