Scalable Fabrication of Photochemically Reduced Graphene-Based Monolithic Micro-Supercapacitors with Superior Energy and Power Densities

IMR OpenIR

	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
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.