{HEAD ~ The device} 9, wherein {TAIL ~ the medium} is selected to facilitate diffusion of intercalating ions between the first and second electrodes 
wherein
{ HEAD ~ The device } 9 , wherein { TAIL ~ the medium } is selected to facilitate diffusion of intercalating ions between the first and second electrodes
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH