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Mesoporous polypyrrole-based graphene nanosheets anchoring redox polyoxometalate for all-solid-state micro-supercapacitors with enhanced volumetric capacitance
Qin, Jieqiong1,2; Zhou, Feng1; Xiao, Han1; Ren, Ruyi1; Wu, Zhong-Shuai1
KeywordMesoporous Graphene Redox All-solid-state Micro-supercapacitors
Source PublicationSCIENCE CHINA-MATERIALS
2018-02-01
ISSN2095-8226
DOI10.1007/s40843-017-9132-8
Volume61Issue:2Pages:233-242
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectMaterials Science, Multidisciplinary
WOS Research AreaMaterials Science
WOS KeywordELECTROCHEMICAL ENERGY-STORAGE ; SODIUM-ION BATTERIES ; CARBON MATERIALS ; ELECTRODE MATERIALS ; HYBRID ELECTRODES ; COMPACT FILMS ; HIGH-VOLTAGE ; PERFORMANCE ; OXIDE ; FABRICATION
AbstractMicro-supercapacitors (MSCs) have emerged as one competitive candidate of high-performance, flexible, safe, portable and wearable energy storage devices. However, improving their electrochemical performance from electrode materials to assembled devices still remains huge challenges. Here, we for the first time synthesized two-dimensional (2D), ultrathin, mesoporous polypyrrole-based graphene nanosheets uniformly anchored with redox polyoxometalate (mPPy@ rGO-POM) by soft template approach. Further, using a layer-by-layer deposition and mask-assisted technique, the compactly stacked and sandwich-like hybrid film (mPGM) based on pseudocapacitive mPPy@rGO-POM nanosheets and electrochemically exfoliated graphene was directly fabricated as binder-and additive-free interdigital electrodes for all-solid- state planar micro-supercapacitors (mPGM-MSCs). Notably, the resulted mPGM-MSCs exhibited outstanding areal capacitance (115 mF cm(-2)), remarkably enhanced volumetric capacitance (137 F cm(-3) at 1 mV s(-1)) in comparison with MSCs based on the films of mPPy@rGO without POM anchoring (95 F cm(-3)), and non-porous polypyrrole-graphene (68 F cm(-3)). Further, mPGM-MSCs disclosed robust mechanical flexibility with similar to 96% of capacitance retention at a highly bending angle of 180 degrees, and impressive parallel or serial interconnection for boosting capacitance or voltage output. As a consequence, our proposed strategy of filling the redox species into mesoporous graphene and other 2D nanosheets will open up new ways to manufacture high-compact and flexible energy storage devices ranging from supercapacitors to batteries.
Language英语
WOS IDWOS:000428198100006
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/168889
Collection中国科学院大连化学物理研究所
Corresponding AuthorWu, Zhong-Shuai
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Qin, Jieqiong,Zhou, Feng,Xiao, Han,et al. Mesoporous polypyrrole-based graphene nanosheets anchoring redox polyoxometalate for all-solid-state micro-supercapacitors with enhanced volumetric capacitance[J]. SCIENCE CHINA-MATERIALS,2018,61(2):233-242.
APA Qin, Jieqiong,Zhou, Feng,Xiao, Han,Ren, Ruyi,&Wu, Zhong-Shuai.(2018).Mesoporous polypyrrole-based graphene nanosheets anchoring redox polyoxometalate for all-solid-state micro-supercapacitors with enhanced volumetric capacitance.SCIENCE CHINA-MATERIALS,61(2),233-242.
MLA Qin, Jieqiong,et al."Mesoporous polypyrrole-based graphene nanosheets anchoring redox polyoxometalate for all-solid-state micro-supercapacitors with enhanced volumetric capacitance".SCIENCE CHINA-MATERIALS 61.2(2018):233-242.
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