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Large scale production of polyacrylonitrile-based porous carbon nanospheres for asymmetric supercapacitors
Liu, YJ; Cao, JY; Jiang, XH; Yang, YG; Yu, LM; Yan, XF; Yu, LM (reprint author), Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China.; Yu, LM (reprint author), Ocean Univ China, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266100, Peoples R China.
2018-04-28
发表期刊JOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
卷号6期号:16页码:6891-6903
摘要The increasing demand for a satisfactory combination of energy-power features in supercapacitors has triggered considerable research efforts dedicated to the development of high-efficiency energy storage devices. In our study, highly cross-linked porous carbon microspheres were prepared via the carbonization of as-prepared polymer spheres followed by a KOH activation process. The resultant products exhibited a high maximum specific surface area (3065.6 m(2) g(-1)), rich nitrogen and oxygen doping (22.3 wt%) and a significant volume fraction of mesopores/macropores (37.91%). The optimal electrode presents the highest specific capacitance of 290 F g(-1) and superior cycling stability with 96% retention after 3000 cycles in an aqueous 2 M KOH electrolyte. Moreover, the assembled asymmetric supercapacitor device based on Co0.9Mn0.1 arrays as the positive electrode achieves a specific capacitance of 105.43 F g(-1) and an energy density of 134.9 W h kg(-1) at a power density of 2879.8 W kg(-1). Interestingly, the device can illuminate an LED for 30 min, demonstrating the promising application potential in high-performance devices related to energy storage.; The increasing demand for a satisfactory combination of energy-power features in supercapacitors has triggered considerable research efforts dedicated to the development of high-efficiency energy storage devices. In our study, highly cross-linked porous carbon microspheres were prepared via the carbonization of as-prepared polymer spheres followed by a KOH activation process. The resultant products exhibited a high maximum specific surface area (3065.6 m(2) g(-1)), rich nitrogen and oxygen doping (22.3 wt%) and a significant volume fraction of mesopores/macropores (37.91%). The optimal electrode presents the highest specific capacitance of 290 F g(-1) and superior cycling stability with 96% retention after 3000 cycles in an aqueous 2 M KOH electrolyte. Moreover, the assembled asymmetric supercapacitor device based on Co0.9Mn0.1 arrays as the positive electrode achieves a specific capacitance of 105.43 F g(-1) and an energy density of 134.9 W h kg(-1) at a power density of 2879.8 W kg(-1). Interestingly, the device can illuminate an LED for 30 min, demonstrating the promising application potential in high-performance devices related to energy storage.
部门归属[liu, yujing ; jiang, xiaohui ; yu, liangmin ; yan, xuefeng] ocean univ china, minist educ, key lab marine chem theory & technol, qingdao 266100, peoples r china ; [liu, yujing ; jiang, xiaohui ; yu, liangmin ; yan, xuefeng] ocean univ china, qingdao collaborat innovat ctr marine sci & techn, qingdao 266100, peoples r china ; [cao, jingyi ; yang, yange] naval coatings anal & test ctr, beijing 102442, peoples r china ; [yang, yange] chinese acad sci, inst met res, lab corros & protect, shenyang 110016, liaoning, peoples r china
关键词High-performance Supercapacitors Long Cycle Life Electrochemical Capacitors Electrode Materials Nitrogen-content Energy-storage Surface-area Facile Synthesis Nanofibers Graphene
学科领域Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
资助者National Natural Science Foundation of China [U1706225]; Fundamental Research Funds for the Central Universities [201562026, 201762029]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79353
专题中国科学院金属研究所
通讯作者Yu, LM (reprint author), Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China.; Yu, LM (reprint author), Ocean Univ China, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266100, Peoples R China.
推荐引用方式
GB/T 7714
Liu, YJ,Cao, JY,Jiang, XH,et al. Large scale production of polyacrylonitrile-based porous carbon nanospheres for asymmetric supercapacitors[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(16):6891-6903.
APA Liu, YJ.,Cao, JY.,Jiang, XH.,Yang, YG.,Yu, LM.,...&Yu, LM .(2018).Large scale production of polyacrylonitrile-based porous carbon nanospheres for asymmetric supercapacitors.JOURNAL OF MATERIALS CHEMISTRY A,6(16),6891-6903.
MLA Liu, YJ,et al."Large scale production of polyacrylonitrile-based porous carbon nanospheres for asymmetric supercapacitors".JOURNAL OF MATERIALS CHEMISTRY A 6.16(2018):6891-6903.
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