Journal ArticleDOI
Two-Dimensional Porous Carbon: Synthesis and Ion-Transport Properties
Reads0
Chats0
TLDR
Two-dimensional porous carbon sheets with an interlinked hierarchical porous structure are a good candidate for supercapacitors due to their advantages in high aspect ratio for electrode packing and electron transport, hierarchical pore structures for ion transport, and short ion-transport length.Abstract:
Their chemical stability, high specific surface area, and electric conductivity enable porous carbon materials to be the most commonly used electrode materials for electrochemical capacitors (also known as supercapacitors). To further increase the energy and power density, engineering of the pore structures with a higher electrochemical accessible surface area, faster ion-transport path and a more-robust interface with the electrolyte is widely investigated. Compared with traditional porous carbons, two-dimensional (2D) porous carbon sheets with an interlinked hierarchical porous structure are a good candidate for supercapacitors due to their advantages in high aspect ratio for electrode packing and electron transport, hierarchical pore structures for ion transport, and short ion-transport length. Recent progress on the synthesis of 2D porous carbons is reported here, along with the improved electrochemical behavior due to enhanced ion transport. Challenges for the controlled preparation of 2D porous carbons with desired properties are also discussed; these require precise tuning of the hierarchical structure and a clarification of the formation mechanisms.read more
Citations
More filters
Journal ArticleDOI
Highly efficient nonprecious metal catalysts towards oxygen reduction reaction based on three-dimensional porous carbon nanostructures.
TL;DR: This tutorial review focuses on the rational design and synthesis of different 3D porous carbon-based nanomaterials, such as heteroatom-doped carbon, metal-nitrogen-carbon nanostructures and a series of carbon/nonprecious metal-based hybrids, whose enhanced ORR performances are demonstrated.
Journal ArticleDOI
Large-Area Carbon Nanosheets Doped with Phosphorus: A High-Performance Anode Material for Sodium-Ion Batteries.
TL;DR: This is the first time to realize the conversion from 0D CDs to 2D nanosheets doped with phosphorus, and this work will provide significant value for the development of both carbon materials and SIBs anode materials.
Journal ArticleDOI
Porous 3D Few-Layer Graphene-like Carbon for Ultrahigh-Power Supercapacitors with Well-Defined Structure-Performance Relationship.
Jin Zhao,Yufei Jiang,Hao Fan,Meng Liu,Ou Zhuo,Xizhang Wang,Qiang Wu,Lijun Yang,Yanwen Ma,Zheng Hu +9 more
TL;DR: An effective new approach is demonstrated, which can extend the understanding of structure-performance relationships for many electrochemical energy-storage systems and form a significant complement to classical electrochemical impedance spectroscopy.
Journal ArticleDOI
Three-dimensional scaffolding framework of porous carbon nanosheets derived from plant wastes for high-performance supercapacitors
Chong Chen,Chong Chen,Dengfeng Yu,Gongyuan Zhao,Baosheng Du,Wei Tang,Lei Sun,Ye Sun,Flemming Besenbacher,Miao Yu +9 more
TL;DR: In this article, a 3D scaffolding framework of highly porous carbon nanosheets (PCNSs) was derived from plant wastes having specific natural morphology, i.e. half-transparent thin flakes, through a facile carbonization and activation treatment.
Journal ArticleDOI
Synthesis Strategies of Porous Carbon for Supercapacitor Applications
TL;DR: In this paper, the King Abdullah University of Science and Technology at King Abdulaziz University (KAUST-KAU) and W.L.Y.Z.J.
References
More filters
Journal ArticleDOI
Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
Journal ArticleDOI
The electronic properties of graphene
TL;DR: In this paper, the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two-dimensional Dirac-like electronic excitations, are discussed.
Journal ArticleDOI
Materials for electrochemical capacitors
TL;DR: This work has shown that combination of pseudo-capacitive nanomaterials, including oxides, nitrides and polymers, with the latest generation of nanostructured lithium electrodes has brought the energy density of electrochemical capacitors closer to that of batteries.
Journal ArticleDOI
Graphene: Status and Prospects
TL;DR: This review analyzes recent trends in graphene research and applications, and attempts to identify future directions in which the field is likely to develop.