Fig. 6

GC-MS measurement. The extracted chromatogram (m/z 90) and DES mass spectra (DES = m/z 90) were taken from the Li anode of the Li–O2 cell with 50 mM TESI after 60 cycles. a Extracted chromatogram. b DES mass spectra (DES = m/z 90)

GC-MS measurement. The extracted chromatogram (m/z 90) and DES mass spectra (DES = m/z 90) were taken from the Li anode of the Li–O2 cell with 50 mM TESI after 60 cycles. a Extracted chromatogram. b DES mass spectra (DES = m/z 90)