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The characteristics of CoO prepared from the calcination of Co(OH) 2 (precursor of CoO) in the N 2 atmosphere were analyzed, and the charge/discharge properties of CoO was also investigated in this paper. Increasing the calcination temperature from 200 to 900°C the grain size of CoO increased from 6.59 to 31.5nm, and the BET surface area decreased from 89.83 to 0.47m 2 g ...
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