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.)
Ionic liquid-induced tunable N-doped mesoporous carbon spheres for supercapacitors
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-06-02 , DOI: 10.1039/d0qi00375a Haixia Wu 1, 2, 3, 4, 5 , Haijun Lv 4, 5, 6, 7 , Yue Zhang 4, 5, 6, 7 , Juan Du 4, 5, 6, 7 , Aibing Chen 4, 5, 6, 7
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-06-02 , DOI: 10.1039/d0qi00375a Haixia Wu 1, 2, 3, 4, 5 , Haijun Lv 4, 5, 6, 7 , Yue Zhang 4, 5, 6, 7 , Juan Du 4, 5, 6, 7 , Aibing Chen 4, 5, 6, 7
Affiliation
|
N-Doped mesoporous carbon spheres (N-MCSs) have shown important applications in many fields. Herein, N-MCSs with uniform spherical morphology, adjustable inner structure, and abundant mesoporous are prepared by a feasible co-assembly of an ionic liquid (IL), a silica precursor (tetraethoxysilane (TEOS)) and a carbon precursor (resorcinol/formaldehyde resin (RF)). The IL is used as a template on which TEOS and RF are assembled together through electrostatic interactions to form a spherical shape. Nitrogen in the IL results in N-doping of the carbon framework. Moreover, addition of TEOS can provide rich mesopores and cavity structures for the N-MCSs. The system solvent volume and RF amounts have a direct impact on the structure of the N-MCSs, changing from core–shell to hollow or from core–shell to solid carbon spheres. Different structures in the N-MCSs lead to distinct electrochemical properties as an electrode material. The N-MCSs have a unique core–shell structure, a crumpled surface, appropriate N-doping and a high surface area, which endows them with higher electrochemical properties of 350 F g−1 capacitance at 0.5 A g−1, good rate performance of 77.5% retention in the current density range of 0.5–10 A g−1, and long cycle life with 80.2% of the initial capacity after 10 000 cyclic tests, showing their promising potential to be used as an electrode material in supercapacitors.
中文翻译：
离子液体诱导的超级电容器可调谐N掺杂介孔碳球
N掺杂的中孔碳球（N-MCS）在许多领域都显示出重要的应用。在此，通过离子液体（IL），二氧化硅前体（四乙氧基硅烷（TEOS））和碳前体（间苯二酚/甲醛）的可行共组装，制备出具有均匀球形形态，可调节内部结构和丰富中孔的N-MCS。树脂（RF））。IL用作模板，通过静电相互作用将TEOS和RF组装在一起以形成球形。IL中的氮导致碳骨架的N掺杂。而且，添加TEOS可以为N-MCS提供丰富的中孔和腔结构。系统溶剂的体积和RF量对N-MCS的结构有直接的影响，从核-壳到空心或从核-壳到固态碳球都会变化。N-MCS中不同的结构导致其作为电极材料具有独特的电化学性能。N-MCS具有独特的核-壳结构，皱折的表面，适当的N掺杂和高表面积，这使其具有350 F g的更高电化学性能-1电容在0.5 A克-1，在0.5-10甲克的电流密度范围为77.5％保留的良好倍率性能-1，以及长的循环寿命与初始容量的80.2％后10个000循环试验，可见其有望用作超级电容器的电极材料。
更新日期：2020-06-30
中文翻译：
离子液体诱导的超级电容器可调谐N掺杂介孔碳球
N掺杂的中孔碳球（N-MCS）在许多领域都显示出重要的应用。在此，通过离子液体（IL），二氧化硅前体（四乙氧基硅烷（TEOS））和碳前体（间苯二酚/甲醛）的可行共组装，制备出具有均匀球形形态，可调节内部结构和丰富中孔的N-MCS。树脂（RF））。IL用作模板，通过静电相互作用将TEOS和RF组装在一起以形成球形。IL中的氮导致碳骨架的N掺杂。而且，添加TEOS可以为N-MCS提供丰富的中孔和腔结构。系统溶剂的体积和RF量对N-MCS的结构有直接的影响，从核-壳到空心或从核-壳到固态碳球都会变化。N-MCS中不同的结构导致其作为电极材料具有独特的电化学性能。N-MCS具有独特的核-壳结构，皱折的表面，适当的N掺杂和高表面积，这使其具有350 F g的更高电化学性能-1电容在0.5 A克-1，在0.5-10甲克的电流密度范围为77.5％保留的良好倍率性能-1，以及长的循环寿命与初始容量的80.2％后10个000循环试验，可见其有望用作超级电容器的电极材料。
京公网安备 11010802027423号