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Powder of raw pitch coke was activated with alkali hydroxides at 500-900 o C to prepare carbon electrode of high capacitance for electric double layer capacitor (EDLC). KOH provided very high surface area of 2320m 2 /g at 800 o C, while NaOH did moderate surface area of 1000m 2 /g at 650-750 o C. High surface area provided by KOH led to a high capacitance per...
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