Operando fluorescence lifetime imaging microscopy during Li+ intercalation into graphitic electrodes
Matthew J.
Quarrell, 
a
Thukshan
Samarakoon,
a
Alex R.
Neale,
a
Oliver J.
Barker,
a
Stanley W.
Botchway
b
and
Laurence J.
Hardwick
*ac
a
Thukshan
Samarakoon,
a
Alex R.
Neale,
a
Oliver J.
Barker,
a
Stanley W.
Botchway
b
and
Laurence J.
Hardwick
*ac
Abstract
The evolution of emission background within Li-ion half-cells was monitored using operando fluorescence lifetime imaging microscopy. Fluorescence lifetimes were spatially mapped on graphite electrodes during lithiation and delithiation within two electrolyte formulations containing either a Li[PF6] or Li[ClO4] salt, which highlighted differing emission characteristics associated with salt stability.
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