内容如下，
The specific surface area of each sample was determined with
BrunauereEmmetteTeller (BET) measurement with nitrogen gas (NOVA3200e type analyzer,USA).
Graphite electrode laminates were prepared by casting onto a copper foil a slurry consisting of either the treated or untreated graphite powder (89 wt.%), acetylene black (1 wt.%) and poly(vinylidene fluoride) (PVDF) (10 wt.%) dispersed in ethanol
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