Scalable Fabrication of Photochemically Reduced Graphene-Based Monolithic Micro-Supercapacitors with Superior Energy and Power Densities | |
Wang, Sen; Wu, Zhon-Shuai; Zheng, Shuanghao; Zhou, Feng; Sun, Chenglin; Cheng, Hui-Ming; Bao, Xinhe; Wu, ZS (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China. | |
2017-04-01 | |
发表期刊 | ACS NANO
![]() |
ISSN | 1936-0851 |
卷号 | 11期号:4页码:4283-4291 |
摘要 | Micro-supercapacitors (MSCs) hold great promise as highly competitive miniaturized power sources satisfying the increased demand of smart integrated electronics. However, single-step scalable fabrication of MSCs with both high energy and power densities is still challenging. Here we demonstrate the scalable fabrication of graphene-based monolithic MSCs with diverse planar geometries and capable of superior integration by photochemical reduction of graphene oxide/TiO2 nanoparticle hybrid films. The resulting MSCs exhibit high volumetric capacitance of 233.0 F cm(-3), exceptional flexibility, and remarkable capacity of modular serial and parallel integration in aqueous gel electrolyte. Furthermore, by precigely engineering the interface of electrode with electrolyte, these monolithic MSCs can operate well in a hydrophobic electrolyte of ionic liquid (3.0 V) at a high scan rate of 200 V s(-1), two orders of magnitude higher than those of conventional supercapacitors. More notably, the MSCs show landmark volumetric power density of 312 W cm(-3) and energy density of 7.7 mWh cm(-3), both of which are among the highest values attained for carbon-based MSCs. Therefore, such monolithic MSC devices based on photochemically reduced, compact graphene films possess enormous potential for numerous miniaturized, flexible electronic applications.; Micro-supercapacitors (MSCs) hold great promise as highly competitive miniaturized power sources satisfying the increased demand of smart integrated electronics. However, single-step scalable fabrication of MSCs with both high energy and power densities is still challenging. Here we demonstrate the scalable fabrication of graphene-based monolithic MSCs with diverse planar geometries and capable of superior integration by photochemical reduction of graphene oxide/TiO2 nanoparticle hybrid films. The resulting MSCs exhibit high volumetric capacitance of 233.0 F cm(-3), exceptional flexibility, and remarkable capacity of modular serial and parallel integration in aqueous gel electrolyte. Furthermore, by precigely engineering the interface of electrode with electrolyte, these monolithic MSCs can operate well in a hydrophobic electrolyte of ionic liquid (3.0 V) at a high scan rate of 200 V s(-1), two orders of magnitude higher than those of conventional supercapacitors. More notably, the MSCs show landmark volumetric power density of 312 W cm(-3) and energy density of 7.7 mWh cm(-3), both of which are among the highest values attained for carbon-based MSCs. Therefore, such monolithic MSC devices based on photochemically reduced, compact graphene films possess enormous potential for numerous miniaturized, flexible electronic applications. |
部门归属 | [wang, sen ; wu, zhon-shuai ; zheng, shuanghao ; zhou, feng ; sun, chenglin ; bao, xinhe] chinese acad sci, dalian inst chem phys, dalian natl lab clean energy, 457 zhongshan rd, dalian 116023, peoples r china ; [wang, sen ; zheng, shuanghao] univ chinese acad sci, 19 a yuquan rd, beijing 100049, peoples r china ; [zheng, shuanghao ; bao, xinhe] chinese acad sci, dalian inst chem phys, state key lab catalysis, 457 zhongshan rd, dalian 116023, peoples r china ; [cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; [cheng, hui-ming] tsinghua univ, tbsi, 1001 xueyuan rd, shenzhen 518055, peoples r china |
关键词 | Graphene Photochemical Reduction Monolithic Micro-supercapacitors Supercapacitors Energy Storage |
学科领域 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
资助者 | National Natural Science Foundation of China [51572259]; National Key R&D Program of China [2016YBF0100100, 2016YFA0200200]; Natural Science Foundation of Liaoning Province [201602737]; Thousand Youth Talents Plan of China; DICP [Y5610121T3] |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000400233200090 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.imr.ac.cn/handle/321006/78200 |
专题 | 中国科学院金属研究所 |
通讯作者 | Wu, ZS (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China. |
推荐引用方式 GB/T 7714 | Wang, Sen,Wu, Zhon-Shuai,Zheng, Shuanghao,et al. Scalable Fabrication of Photochemically Reduced Graphene-Based Monolithic Micro-Supercapacitors with Superior Energy and Power Densities[J]. ACS NANO,2017,11(4):4283-4291. |
APA | Wang, Sen.,Wu, Zhon-Shuai.,Zheng, Shuanghao.,Zhou, Feng.,Sun, Chenglin.,...&Wu, ZS .(2017).Scalable Fabrication of Photochemically Reduced Graphene-Based Monolithic Micro-Supercapacitors with Superior Energy and Power Densities.ACS NANO,11(4),4283-4291. |
MLA | Wang, Sen,et al."Scalable Fabrication of Photochemically Reduced Graphene-Based Monolithic Micro-Supercapacitors with Superior Energy and Power Densities".ACS NANO 11.4(2017):4283-4291. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论