Organosilica-based ionogel derived nitrogen-doped microporous carbons for high performance supercapacitor electrodes†,Inorganic Chemistry Frontiers

当前位置： X-MOL 学术 › Inorg. Chem. Front. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Organosilica-based ionogel derived nitrogen-doped microporous carbons for high performance supercapacitor electrodes†
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2018-10-16 00:00:00 , DOI: 10.1039/c8qi01034j
Peng Wang _{1,

2,

3,

4,

5} , Lumi Tao _{1,

2,

3,

4,

5} , Huan Luo _{1,

2,

3,

4,

5} , Dongyang Chen _{3,

4,

5,

6} , Zailai Xie _{1,

2,

3,

4,

5}

Affiliation

The article presents the synthesis and properties of new organosilica-based ionogels for carbon precursors. A new preparation process using functional ionic liquid 1-propionic acid-2-methyl imidazole bromide as the linker and an organically modified silica framework as the host yields stable, yellowish and transparent organosilica ionogels. The ionogel is formed by (1) the sol–gel process of an organosilane [3-(2-aminoethylamino)propyl]trimethoxysilane and (2) the covalent interaction of a carboxyl-functional group of the ionic liquid with the amino-containing organosilica. Furthermore, controllable synthesis of nitrogen-doped microporous carbons from the direct pyrolysis of organosilica-based ionogels is reported. The ionic liquid serves as carbon and nitrogen sources, while the organically modified silica framework acts as an inherent template to induce porosity. As a result, high surface areas of up to 1107 m² g⁻¹ and high nitrogen contents of up to 3.9 wt% are achieved. The electrode prepared from C-1000 delivers a remarkable capacity of 254 F g⁻¹ at a current density of 1 A g⁻¹, which can be attributed to the synergistic coupling effect of N-doping, hierarchical porosity and intrinsic defects.

中文翻译：

基于有机硅的离子凝胶衍生的氮掺杂微孔碳，用于高性能超级电容器电极†

本文介绍了用于碳前体的新型有机硅基离子凝胶的合成和性能。使用功能性离子液体1-丙酸-2-甲基咪唑溴化物作为连接剂，并使用有机改性的二氧化硅骨架作为主体的新制备方法可产生稳定，淡黄色和透明的有机二氧化硅离子凝胶。离子凝胶是由（1）有机硅烷[3-（2-氨基乙基氨基）丙基]三甲氧基硅烷的溶胶-凝胶过程和（2）离子液体的羧基官能团与含氨基的有机二氧化硅的共价相互作用形成的。此外，据报道由有机硅基离子凝胶的直接热解可控制地合成氮掺杂的微孔碳。离子液体可作为碳源和氮源，而有机改性的二氧化硅骨架充当固有模板以诱导孔隙。结果，高达1107 m的高表面积^获得2 g^-1和高达3.9 wt％的高氮含量。由C-1000制备的电极在1 A g^-1的电流密度下具有254 F g^-1的显着容量，这可归因于N掺杂，分层孔隙率和固有缺陷的协同耦合效应。

更新日期：2018-10-16

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11