Microporous-mesoporous carbons for energy storage synthesized by activation of carbonaceous material by zinc chloride, potassium hydroxide or mixture of them
Microporous-mesoporous carbons for energy storage synthesized by activation of carbonaceous material by zinc chloride, potassium hydroxide or mixture of them
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DOI：
10.1016/j.jpowsour.2016.04.038
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发表时间：
2016-09-15
影响因子：
9.2
通讯作者：
Lust, E.
中科院分区：
文献类型：
--
作者：
Harmas, M.;Thomberg, T.;Lust, E.
采用多种电化学方法建立了由1 M三乙基甲基四氟硼酸铵乙腈溶液和活性炭电极组成的双电层电容器（EDLC）的电化学特性。以D-(+)-葡萄糖溶液在水中水热炭化法制备的水热炭化产物（HTC）为原料，再用ZnCl2、KOH或其混合物活化，合成了用于电极制备的活性微孔炭材料。在700℃下，使用质量比为1:4的KOH活化HTC，获得了最高孔隙率和brunauer - emmet - teller比表面积(S-BET = 2150 m（2) g(-1)）、微孔表面积(S-micro = 2140 m（2) g(-1)）和总孔体积(V-tot = 1.01 cm（3) g(-1)）。研究了V-tot和电化学特性，探讨了电化学特性对所研究碳材料的合成条件依赖性强的原因。理想极化率宽区域（δ V）
Various electrochemical methods have been applied to establish the electrochemical characteristics of the electrical double layer capacitor (EDLC) consisting of the 1 M triethylmethylammonium tetra-fluoroborate solution in acetonitrile and activated carbon based electrodes. Activated microporous carbon materials used for the preparation of electrodes have been synthesized from the hydrothermal carbonization product (HTC) prepared via hydrothermal carbonization process of D-(+)-glucose solution in H2O, followed by activation with ZnCl2, KOH or their mixture. Highest porosity and Brunauer-Emmett-Teller specific surface area (S-BET = 2150 m(2) g(-1)), micropore surface area (S-micro = 2140 m(2) g(-1)) and total pore volume (V-tot = 1.01 cm(3) g(-1)) have been achieved for HTC activated using KOH with a mass ratio of 1:4 at 700 degrees C. The correlations between S-BET, S-micro, V-tot and electrochemical characteristics have been studied to investigate the reasons for strong dependence of electrochemical characteristics on the synthesis conditions of carbon materials studied. Wide region of ideal polarizability (Delta V