壳层可控的双金属氧化物空心球在超级电容器中的应用
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- 英文论文题名：Controllable Binary Metal Oxide Hollow Spheres for Advanced Supercapacitor Electrode Materials
- 论文作者：赵孝先 ; 唐红杰 ; 王江艳 ; 任浩 ; 齐健 ; 杨宇 ; 金泉 ; 于然波 ; 王丹
- 英文论文作者：Xiaoxian Zhao ; Hongjie Tang ; Jiangyan Wang ; Hao Ren ; Jian Qi ; Yu Yang ; Quan Jin ; Ranbo Yu ; Dan Wang ; Department of Physical Chemistry ; University of Science and Technology Beijing ; Institut of Process Engineering ; Chinese Academy of Sciences
- 年：2016
- 作者机构：北京科技大学冶金与生态工程学院物理化学系;中国科学院过程工程研究所生物工程国家重点实验室;
- 论文关键词：超级电容器 ; 多壳层空心球 ; 二元金属氧化物 ; 电极材料
- 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-第三十分会：化学电源
- 语种：中文
- 分类号：TB383.4;TM53
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十分会 ; 化学电源
- 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：2
- 文件大小：222k
- 原文格式：D
- 会议级别：全国
摘要
超级电容器作为一种先进的储能设备已经被广泛的应用于各种电子系统。赝电容相比传统的双电层电容器,拥有高功率密度、能量密度、优越的比电容、快速可逆的表面氧化还原反应,受到了广泛关注。双金属氧化物中两种不同金属之间存在协同作用,使其拥有比单金属氧化物更高的电容性能。材料形貌同样是影响电容性能的另一重要因素。而相比其他形貌材料,空心结构材料作为超级电容器电极材料拥有以下优点。1:空心结构可以有效的抑制纳米颗粒团聚;2:空心结构拥有大的比表面和孔体积,可以共更多的有效的活性位点、缩短电荷传输路径;3:空心球表面介孔和微孔可以促进电解液进入空心球内部~([1])。本文利用碳球作为连续模版,合成了壳层数、壳层厚度、壳层间距可控的二元复合金属氧化物多壳层空心球。该空心球拥有超薄壳壁、高比表面积、大的孔体积、均匀壳层间距,作为赝电容电极材料显示了超高的比电容和优越的循环稳定性。
Pseudo-capacitors,have attracted a great amount of attention due to their higher power density,energy density,superior rate capacitor,fast and reversible surface redox reactions.Meanwhile,hollow structured materials seem to be more suited for advanced supercapacitor materials due to unique structure.1) The thin and porous shell of hollow structures can effectively prevent the aggregation of nanoparticles,2) Hollow structures possesses larger specific area and pore volume to provide more active sites and shorten the ion diffusion lengths from exterior to interior.3) The mesopore and macropore on the surface of spherical shell can facilitate the permeation of electrolyte permeation into interior to achieve sufficient surface contact.Herein,we reported the synthesis of multi-shelled binary oxide hollow spheres using carbonaceous microspheres(CMSs) as sacrificial templates by finely controlling preparation conditions,and the shell number,thickness and porosity was controlled accurately.Exhilaratingly,the multi-shelled metal oxide hollow microspheres,as electrode material of supercapacitor,with thin shell,uniform gap between adjacent shells and large specific area own high specific capacitance and long cycling stability.
Pseudo-capacitors,have attracted a great amount of attention due to their higher power density,energy density,superior rate capacitor,fast and reversible surface redox reactions.Meanwhile,hollow structured materials seem to be more suited for advanced supercapacitor materials due to unique structure.1) The thin and porous shell of hollow structures can effectively prevent the aggregation of nanoparticles,2) Hollow structures possesses larger specific area and pore volume to provide more active sites and shorten the ion diffusion lengths from exterior to interior.3) The mesopore and macropore on the surface of spherical shell can facilitate the permeation of electrolyte permeation into interior to achieve sufficient surface contact.Herein,we reported the synthesis of multi-shelled binary oxide hollow spheres using carbonaceous microspheres(CMSs) as sacrificial templates by finely controlling preparation conditions,and the shell number,thickness and porosity was controlled accurately.Exhilaratingly,the multi-shelled metal oxide hollow microspheres,as electrode material of supercapacitor,with thin shell,uniform gap between adjacent shells and large specific area own high specific capacitance and long cycling stability.
引文
[1]Wang,J.Y.;Yang N.L.;Tang,H.J.;Dong,Z.H.;Jin,Q.;Yang,M.;Kisailus,D.;Zhao,H.J.;Tang,Z.Y.;Wang,D.Angew.Chem.2013,125:6545.
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