As the carbonaceous material, {HEAD ~ a powder} of e.g. activated carbon, polyacene or carbon black, which has {TAIL ~ a specific surface area} of from 200 to 3500 m2/g, is preferred 
As the carbonaceous material , { HEAD ~ a powder } of e.g. activated carbon , polyacene or carbon black , which has { TAIL ~ a specific surface area } of from 200 to 3500 m2 / g , is preferred
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH