碱性氨基酸催化含氮有序介孔碳的水相合成及其电容性能研究
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- 英文论文题名：Highly ordered nitrogen-doped mesoporous carbons with tunable properties synthesized by basic amino acid-assisted aqueous route for high performance supercapacitors
- 论文作者：曾超 ; 夏良俊 ; 唐浩林 ; 邓兆 ; 李煜 ; 刘丹 ; 屈德宇
- 英文论文作者：Chao Zeng ; Liangjun Xia ; Haolin Tang ; Zhao Deng ; Yu Li ; Dan Liu ; Deyu Qu ; Department of Chemistry ; School of Chemistry ; Chemical Engineering and Life Sciences ; Wuhan University of Technology ; State Key Laboratory of Advanced Technology for Materials Synthesis and Processing ; Wuhan University of Technology
- 年：2016
- 作者机构：武汉理工大学化生学院化学系;武汉理工大学材料复合新技术国家重点实验室;
- 论文关键词：氮掺杂 ; 有序介孔碳 ; 活化 ; 比电容
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十九分会：纳米碳材料
- 语种：中文
- 分类号：TQ127.11;TB383.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十九分会 ; 纳米碳材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：219k
- 原文格式：D
- 会议级别：全国
摘要
本文通过引入碱性氨基酸协助水相自组装的方法合成了氮掺杂的高度有序介孔碳材料~([1])。在这个体系中氨基酸既是前驱体聚合的反应物和催化剂,又是掺杂的氮源~([2])。这种合成方法在保证介观结构有序度的前提下巧妙地实现了介孔碳材料组分、结构~([3])和形貌~([4])的可调性并实现了产物的大批量合成。产物的氮含量在~1wt%到~6.3 wt%的范围内,通过前驱体的量的改变可以进行有效调节,同时还可改变表面活性剂的亲疏水体积比,实现二维六方结构和立方结构的调节转变。典型产物的比表面积由氮气吸脱附曲线BET模型计算为600 m~2g~(-1),经过KOH活化后比表面积急剧增大为1866 m~2g~(-1)并维持了其介观结构的有序性。采用两电极对称型电容器体系,以离子液体为电解液,在0.25 A g~(-1)的电流密度下,活化后的有序介孔碳材料的比电容为186 F g~(-1)。在倍率性能测试中,以20 A g~(-1)的电流密度充放电,其容量保持在75%以上。
Nitrogen-doped ordered mesoporous carbons(OMCs) have been synthesized via aqueous cooperative assembly route with basic amino acids as either polymerization catalysts or nitrogen dopants. This method allows large-scale production of nitrogen-doped OMCs with tunable composition, structure and morphologywhile maintaining highly ordered mesostructures. For instances, the nitrogen content can be varied from ~1 wt% to ~6.3 wt% and the mesophase can be either 3-D body-centered cubic or 2-D hexagonal. The specific surface area for typical OMCs is around 600 m~2 g~(-1), and further KOH activation can enhance the surface area to 1866 m~2 g~(-1) without destroying the ordered mesostructures. the synthesized OMCs show a great potential towards supercapacitor application. When measured in a symmetrical two-electrode, the activated OMC exhibits high capacitance(186 F g~(-1) at 0.25 A g~(-1)) and good rate capability(75 % capacity retention at 20 A g~(-1)) in ionic liquid electrolyte.
Nitrogen-doped ordered mesoporous carbons(OMCs) have been synthesized via aqueous cooperative assembly route with basic amino acids as either polymerization catalysts or nitrogen dopants. This method allows large-scale production of nitrogen-doped OMCs with tunable composition, structure and morphologywhile maintaining highly ordered mesostructures. For instances, the nitrogen content can be varied from ~1 wt% to ~6.3 wt% and the mesophase can be either 3-D body-centered cubic or 2-D hexagonal. The specific surface area for typical OMCs is around 600 m~2 g~(-1), and further KOH activation can enhance the surface area to 1866 m~2 g~(-1) without destroying the ordered mesostructures. the synthesized OMCs show a great potential towards supercapacitor application. When measured in a symmetrical two-electrode, the activated OMC exhibits high capacitance(186 F g~(-1) at 0.25 A g~(-1)) and good rate capability(75 % capacity retention at 20 A g~(-1)) in ionic liquid electrolyte.
引文
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