本文選題：活性炭 + 孔結(jié)構(gòu)　； 參考：《新型炭材料》2017年04期

【摘要】：以NaOH為活化劑,采用兩步熱化學(xué)過程制備出木基活性炭。將所制活性炭用作以硫酸為電解液的超級電容器電極材料。探討了合成條件對活性炭孔結(jié)構(gòu)和電化學(xué)性能。結(jié)果表明,在微孔中形成雙電層電容,介孔和大孔則實現(xiàn)離子運(yùn)輸。在高的活化溫度或高堿炭比下,材料被過度活化,導(dǎo)致高的介孔、大孔孔容,這增加了電解液的吸收,從而降低質(zhì)量比電容。最佳的活性炭合成條件為,活化溫度:600℃,堿炭比:1.25。
[Abstract]:Wood-based activated carbon was prepared by two-step thermochemical process with NaOH as activator. The activated carbon was used as electrode material of supercapacitor with sulfuric acid as electrolyte. The effect of synthesis conditions on pore structure and electrochemical properties of activated carbon was discussed. The results show that the double layer capacitance is formed in the micropore and the ion transport is realized in the mesopore and macropore. At high activation temperature or high alkali-carbon ratio, the material is over-activated, which leads to high mesoporous and large pore volume, which increases the absorption of electrolyte and reduces the mass specific capacitance. The optimum conditions for the synthesis of activated carbon are as follows: activation temperature: 600 鈩，

本文編號：2072339