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oapen-20.500.12657-492042021-11-23T13:56:52Z Chapter Examining Non‐Celiac Consumers of Gluten‐Free Products: An Empirical Evidence in Spain Hellali, Wajdi Belarbi, Hind de‐Magistris, Tiziana metal‐air batteries, superoxide, peroxide, XAS, XANES, TXM, spectromicroscopy bic Book Industry Communication::P Mathematics & science::PH Physics::PHF Materials / States of matter::PHFC Condensed matter physics (liquid state & solid state physics) Energy‐dependent full‐field transmission soft X‐ray microscopy is a powerful technique that provides chemical information with spatial resolution at the nanoscale. Oxygen K‐level transitions can be optimally detected, and we used this technique to study the discharge products of lithium‐oxygen batteries, where this element undergoes a complex chemistry, involving at least three different oxidation states and formation of nanostructured deposits. We unambiguously demonstrated the presence of significant amounts of superoxide forming a composite with peroxide, and secondary products such as carbonates or hydroxide. In this chapter, we describe the technique from the fundamental to the observation of discharged electrodes to illustrate how this tool can help obtaining a more comprehensive view of the phenomena taking place in metal air batteries and any system involving nanomaterials with a complex chemistry. 2021-06-02T10:09:22Z 2021-06-02T10:09:22Z 2017 chapter ONIX_20210602_10.5772/67626_318 https://library.oapen.org/handle/20.500.12657/49204 eng application/pdf n/a 54254.pdf InTechOpen 10.5772/67626 10.5772/67626 09f6769d-48ed-467d-b150-4cf2680656a1 FP7-PEOPLE-2012-CIG 332769 open access
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Energy‐dependent full‐field transmission soft X‐ray microscopy is a powerful technique that provides chemical information with spatial resolution at the nanoscale. Oxygen K‐level transitions can be optimally detected, and we used this technique to study the discharge products of lithium‐oxygen batteries, where this element undergoes a complex chemistry, involving at least three different oxidation states and formation of nanostructured deposits. We unambiguously demonstrated the presence of significant amounts of superoxide forming a composite with peroxide, and secondary products such as carbonates or hydroxide. In this chapter, we describe the technique from the fundamental to the observation of discharged electrodes to illustrate how this tool can help obtaining a more comprehensive view of the phenomena taking place in metal air batteries and any system involving nanomaterials with a complex chemistry.
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