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Phosphorus Regulated Cobalt Oxide@Nitrogen-Doped Carbon Nanowires for Flexible Quasi-Solid-State Supercapacitors
Liu,Shude1; Yin,Ying1,2; Shen,Yang3; Hui,Kwan San4; Chun,Young Tea5; Kim,Jong Min5; Hui,Kwun Nam6; Zhang,Lipeng3; Jun,Seong Chan1
2020-01
Source PublicationSmall
ISSN1613-6810
Volume16Issue:4
Abstract

Battery-type materials are promising candidates for achieving high specific capacity for supercapacitors. However, their slow reaction kinetics hinders the improvement in electrochemical performance. Herein, a hybrid structure of P-doped Co3O4 (P-Co3O4) ultrafine nanoparticles in situ encapsulated into P, N co-doped carbon (P, N-C) nanowires by a pyrolysis–oxidation–phosphorization of 1D metal–organic frameworks derived from Co-layered double hydroxide as self-template and reactant is reported. This hybrid structure prevents active material agglomeration and maintains a 1D oriented arrangement, which exhibits a large accessible surface area and hierarchically porous feature, enabling sufficient permeation and transfer of electrolyte ions. Theoretical calculations demonstrate that the P dopants in P-Co3O4@P, N-C could reduce the adsorption energy of OH and regulate the electrical properties. Accordingly, the P-Co3O4@P, N-C delivers a high specific capacity of 669 mC cm−2 at 1 mA cm−2 and an ultralong cycle life with only 4.8% loss over 5000 cycles at 30 mA cm−2. During the fabrication of P-Co3O4@P, N-C, Co@P, N-C is simultaneously developed, which can be integrated with P-Co3O4@P, N-C for the assembly of asymmetric supercapacitors. These devices achieve a high energy density of 47.6 W h kg−1 at 750 W kg−1 and impressive flexibility, exhibiting a great potential in practical applications.

KeywordAnion Regulation Encapsulated Hybrids Flexible Quasi-solid-state Supercapacitors In Situ Structural Reconstruction Orientated Metal Organic Frameworks
DOI10.1002/smll.201906458
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000505039200001
PublisherWILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY
Scopus ID2-s2.0-85078387348
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Cited Times [WOS]:61   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorHui,Kwun Nam; Zhang,Lipeng; Jun,Seong Chan
Affiliation1.School of Mechanical Engineering,Yonsei University,Seoul,120749,South Korea
2.Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541000,China
3.College of Chemical Engineering,Beijing University of Chemical Technology,Beijing,100000,China
4.School of Engineering,University of East Anglia,Norwich,34668,United Kingdom
5.Department of Engineering,University of Cambridge,Cambridge,9 JJ Thomson Avenue,01223,United Kingdom
6.Institute of Applied Physics and Materials Engineering,University of Macau,Taipa,Avenida da Universidade,999078,Macao
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Liu,Shude,Yin,Ying,Shen,Yang,et al. Phosphorus Regulated Cobalt Oxide@Nitrogen-Doped Carbon Nanowires for Flexible Quasi-Solid-State Supercapacitors[J]. Small,2020,16(4).
APA Liu,Shude,Yin,Ying,Shen,Yang,Hui,Kwan San,Chun,Young Tea,Kim,Jong Min,Hui,Kwun Nam,Zhang,Lipeng,&Jun,Seong Chan.(2020).Phosphorus Regulated Cobalt Oxide@Nitrogen-Doped Carbon Nanowires for Flexible Quasi-Solid-State Supercapacitors.Small,16(4).
MLA Liu,Shude,et al."Phosphorus Regulated Cobalt Oxide@Nitrogen-Doped Carbon Nanowires for Flexible Quasi-Solid-State Supercapacitors".Small 16.4(2020).
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