We introduce a simple method to prepare hollow carbon nanospheres
(HCNs) by using triblock copolymer poly(styrene-b-2-vinylpyridine-bethylene
oxide) (PS-b-P2VP-b-PEO) micelles as a new class of softtemplates.
Simply by changing the solvent we can prepare ultra-small
sized micelles of the triblock copolymer PS-b-P2VP-b-PEO soft
template to obtain HCNs with ultra-small diameters (43 nm) and hollow
cores (19 nm). Furthermore, we use these HCNs to make electric
double-layer capacitors (EDLCs) that exhibit superior performance.