Sandwich-Like Holey Graphene/PANI/Graphene Nanohybrid for Ultrahigh-Rate Supercapacitor
Source abstract
Abstract
Hierarchically porous holey graphene/PANI/graphene nanohybrid is fabricated by adopting a facile two-step process in which PANI/graphene hybrid was first synthesized hydrothermally and then wrapped with a layer of holey graphene. The resulted sandwich-like structure cannot only promote electronic transmission and ionic diffusion, but also contribute to a prominent rate capability. A symmetric supercapacitor was assembled with the obtained holey graphene/PANI/graphene nanohybrid, exhibiting a maximum specific capacitance of 437 F·g–1 at 1 A·g–1, an energy density of 55 Wh·kg–1 at 900 W·kg–1, an ultrahigh-rate performance (retained 43% capacitance at 100 A·g–1), as well as a long-term life (84% retention after 5000 loops at 10 A·g–1). The present work may provide an insight for designing high-performance symmetric supercapacitor.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Advancements in Battery Materials · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, PR China
School of Materials Science & Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, PR China
Testing Center of Yangzhou University, Yangzhou 225009, PR China
College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, PR China
Funding
Ministry of Education of the People's Republic of China · Natural Science Foundation of Jiangsu Province · National Natural Science Foundation of China · Modern Analysis Center, Nanjing University
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