Synthesis of layered microporous carbons from coal tar by directing, space-confinement and self-sacrificed template strategy for supercapacitors
Synthesis of layered microporous carbons from coal tar by directing, space-confinement and self-sacrificed template strategy for supercapacitors
复制标题
通过定向、空间限制和自牺牲模板策略从煤焦油合成层状微孔碳用于超级电容器
DOI：
10.1016/j.electacta.2017.06.092
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发表时间：
2017
影响因子：
6.6
通讯作者：
Qiu Jieshan
中科院分区：
文献类型：
--
作者：
Xie Xiaoyu;He Xiaojun;Shao Xiaolong;Dong Shian;Xiao Nan;Qiu Jieshan
通过简单的方法合成具有丰富孔隙的低成本碳材料是超级电容器的一个挑战。本文以煤焦油和三聚氰胺为原料，采用定向、空间限制和自牺牲模板剂结合原位KOH活化的方法制备了比表面积高达1865 m2 g-1的层状微孔炭（LMPC）。由LMPC制成的按钮型超级电容器在0.05 A g−1下具有274 F g− 1的高比电容，在20 A g − 1下具有191 F g− 1的良好倍率性能，并且具有优异的上级循环稳定性，在10000次循环后具有98.8%的电容保持率。这项工作提出了一种简便的策略，大规模生产的LMPC从液体多环烃分子的超级电容器。
It is a challenge to synthesize low-cost carbon materials with abundant pores by a simple route for supercapacitors. Herein, layered microporous carbons (LMPCs) with the specific surface area up to 1865 m2g−1are fabricated from coal tar and melamineviaa directing, space-confinement and self-sacrificed template strategy coupled within-situKOH activation. The button-type supercapacitor fabricated from LMPCs exhibits a high specific capacitance of 274 F g−1at 0.05 A g−1, a good rate performance of 191 F g−1at 20 A g−1and a superior cycle stability with 98.8% capacitance retention after 10000 cycles. This work presents a facile strategy for mass production of LMPCs from liquid polycyclic hydrocarbon molecules for supercapacitors.