DataVXACS Applied Materials & InterfacesPaper
journal article·2021-11-10

3D Nano-heterostructure of ZnMn2O4@Graphene-Carbon Microtubes for High-Performance Li-Ion Capacitors

Chang Liu, Yue Zhang, Qing-Yan Zhou, Yun-Kun Dai, Yun-Long Zhang, Yang-Xia, Jian Liu, Xu-Lei Sui, Da-Ming Gu, Zhen-Bo Wang

ACS Applied Materials & Interfaces· Volume 13· Issue 44
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Source abstract

Abstract

Heterostructures show great potential in energy storage due to their multipurpose structures and function. Recently, two-dimensional (2D) graphene has been widely regarded as an excellent substrate for active materials due to its large specific surface area and superior electrical conductivity. However, it is prone to self-aggregation during charging and discharging, which limits its electrochemical performance. To address the graphene agglomeration problem, we interspersed polypyrrole carbon nanotubes between the graphene cavities and designed three-dimensional (3D)-heterostructures of ZnMn2O4@rGO-polypyrrole carbon nanotubes (ZMO@G-PNTs), which demonstrated a high rate and cyclic stability in lithium-ion capacitors (LICs). Furthermore, the 3D porous structure provided more surface capacity contribution than 2D graphene, ultimately resulting in a better stability (333 mAh g–1 after 1000 cycles at 1 A g–1) and high rate capacity (208 mAh g–1 at 5 A g–1). Also, the mechanism of performance difference between ZMO@G-PNTs and ZMO@G was investigated in detail. Moreover, LICs built from ZMO@G-PNTs as an anode and activated carbon as a cathode showed an energy density of 149.3 Wh kg–1 and a power density of 15 kW kg–1 and cycling stability with a capacity retention of 61.5% after 9000 cycles.
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Research context

Energy storageNanomaterials

OpenAlex topics: Supercapacitor Materials and Fabrication · Advancements in Battery Materials · Advanced Battery Materials and Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, State Key Lab of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China

School of Engineering, Faculty of Applied Science, The University of British Columbia, Kelowna V1V 1V7, British Columbia, Canada

Shenzhen Key Laboratory of Special Functional Materials, Shenzhen Engineering Laboratory for Advance Technology of Ceramics, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China

Funding

Ministry of Education of the People's Republic of China · Canada Foundation for Innovation · China Postdoctoral Science Foundation · Natural Sciences and Engineering Research Council of Canada · National Natural Science Foundation of China · University of British Columbia · Heilongjiang Postdoctoral Fund · Heilongjiang Touyan Team · State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology

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