过渡金属硫化物电极材料的形貌可控合成及其电容性能研究
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- 英文论文题名：Morphology Controlled Synthesis of transition metal sulfides for supercapacitors
- 论文作者：唐永福 ; 陈腾 ; 陈顺姬
- 英文论文作者：Yongfu Tang ; Teng Chen ; Shunji Chen ; College of Environmental and Chemical Engineering ; Yanshan University
- 年：2016
- 作者机构：燕山大学环境与化学工程学院;
- 论文关键词：过渡金属硫化物 ; 超级电容器 ; 电极材料 ; 赝电容材料
- 英文论文关键词：Transition metal sulfides ; Supercapacitor ; Electrode materials ; Pseudocapacitive material
- 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：TM53;TQ125.12
- 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：1
- 文件大小：210k
- 原文格式：D
- 会议级别：全国
摘要
电极材料作为超级电容器的关键材料,其电容性能、稳定性直接决定着超级电容器器件的综合性能及应用范围。基于超级电容器的储能原理,可将超级电容器电极材料分为双电层电容材料和赝电容电极材料,其中以过渡金属氧化物/氢氧化物/硫化物为代表的赝电容电极材料由于其法拉第储电过程而表现出远高于双电层电容材料的比电容量,具有良好的应用前景。在赝电容电极材料中,过渡金属硫化物电极材料由于其显著优于相应氧化物的导电性和电化学活性,近年来受到了研究者的广泛关注。为构筑高比表面积、良好离子传输通道和电子传导率的硫化物电极材料,本文采用"一锅法"水热过程及离子交换法等制备了四足棒型MnS电极材料~([1])、MnS纳米线电极材料~([2])、氧化石墨烯负载型多孔MnS电极材料~([3])及中空多孔Co_xNi_(3-x)S_4电极电极材料~([4])。由于显著高于氧化物的导电性及合适的三维结构,这些电极材料表现出良好的比电容性能及倍率放电性能。以这些电极材料为正极,自制的多孔碳材料为负极,组装了非对称超级电容器器件~([1,3])及全固态超级电容器~([2,4]),均表现出良好的电容性能。
To construct suitable structures for ionic transport and to improve the electronic conductivity of electrode in supercapacitor,tetrapod rod-like MnS nanocrystal,MnS nanowires,graphene oxide supported porous MnS nanocrystal and hollow porous Co_xNi_(3-x)S_4 materials were synthesized by "one-pot" hydrothermal process and ion-exchange process in this work.The morphologies of these metal sulfide nanocrystals were controlled by tuning precipitator,concentration,reaction temperature and reaction time.Due to the higher electronic conductivity of metal sulfide than the corresponding metal oxides and the suitable structures for ionic transport,these transition metal sulfide electrodes exhibit high specific capacitance,high rate-capacity and good cycle performance to boost the potential for practical application.The supercapacitor or all-solid-state supercapacitors assembled with these metal sulfides as positive materials and home-made porous carbons as negative materials are exhibit high performances.
To construct suitable structures for ionic transport and to improve the electronic conductivity of electrode in supercapacitor,tetrapod rod-like MnS nanocrystal,MnS nanowires,graphene oxide supported porous MnS nanocrystal and hollow porous Co_xNi_(3-x)S_4 materials were synthesized by "one-pot" hydrothermal process and ion-exchange process in this work.The morphologies of these metal sulfide nanocrystals were controlled by tuning precipitator,concentration,reaction temperature and reaction time.Due to the higher electronic conductivity of metal sulfide than the corresponding metal oxides and the suitable structures for ionic transport,these transition metal sulfide electrodes exhibit high specific capacitance,high rate-capacity and good cycle performance to boost the potential for practical application.The supercapacitor or all-solid-state supercapacitors assembled with these metal sulfides as positive materials and home-made porous carbons as negative materials are exhibit high performances.
引文
[1]Tang,Y.;Chen,T.;Yu,S.Chem.Commun.2015,51:9018.
[2]Tang,Y.;Chen,T.;Qiao,Y.;Liu,Z.;et al.Sci.Rep.,2016,DOI:10.1038/srep23289.
[3]Tang,Y.;Chen,T.;Yu,S.;Qiao,Y.;Mu,S.;Hu,J.;Gao,F.J.Mater.Chem.A,2015,3,12913.
[4]Tang,Y.;Chen,S.;Mu,S.;Chen,T.;et al.ACS Appl.Mater.Interface,2016,DOI:10.1021/acsami.6b01268.
[2]Tang,Y.;Chen,T.;Qiao,Y.;Liu,Z.;et al.Sci.Rep.,2016,DOI:10.1038/srep23289.
[3]Tang,Y.;Chen,T.;Yu,S.;Qiao,Y.;Mu,S.;Hu,J.;Gao,F.J.Mater.Chem.A,2015,3,12913.
[4]Tang,Y.;Chen,S.;Mu,S.;Chen,T.;et al.ACS Appl.Mater.Interface,2016,DOI:10.1021/acsami.6b01268.