Journal ArticleDOI
Synthesis of functionalized 3D hierarchical porous carbon for high-performance supercapacitors
Long Qie,Wei-Min Chen,Henghui Xu,Xiaoqin Xiong,Yan Jiang,Feng Zou,Xianluo Hu,Ying Xin,Zhaoliang Zhang,Yunhui Huang +9 more
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TLDR
In this paper, a functionalized three-dimensional hierarchical porous carbon (THPC) is prepared via a facile modified chemical activation route with polypyrrole microsheets as precursor and KOH as activating agent.Abstract:
Functionalized three-dimensional hierarchical porous carbon (THPC) is prepared via a facile modified chemical activation route with polypyrrole microsheets as precursor and KOH as activating agent. The as-obtained THPC presents a large specific surface area (2870 m2 g−1), high-level heteroatom doping (N: 7.7 wt%, O: 12.4 wt%), excellent electrical conductivity (5.6 S cm−1), and hierarchical porous nano-architecture containing macroporous frameworks, mesoporous walls and microporous textures. Such unique features make the THPC an ideal electrode material for electrochemical energy storage. As the electrode material for a supercapacitor, the THPC exhibits a high capacitance, excellent rate performance and long-term stability in both aqueous and organic electrolytes.read more
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Supercapacitor electrode materials: nanostructures from 0 to 3 dimensions
TL;DR: In this paper, the effect of nanostructures on the properties of supercapacitors including specific capacitance, rate capability and cycle stability is discussed, which may serve as a guideline for the next generation of super-capacitor electrode design.
Journal ArticleDOI
Hierarchical Porous Nitrogen-Doped Carbon Nanosheets Derived from Silk for Ultrahigh-Capacity Battery Anodes and Supercapacitors
TL;DR: A high-performance Li-ion battery and supercapacitor were successfully assembled for the same electrode material, which was obtained through a one-step and facile large-scale synthesis route, and is promising for next-generation hybrid energy storage and renewable delivery devices.
Journal ArticleDOI
Hierarchically porous carbon derived from polymers and biomass: effect of interconnected pores on energy applications
TL;DR: In this article, a review focusing on the out-of-the-box synthetic techniques capable of deriving hierarchical porous carbons (HPCs) with superior application profiles is presented.
Journal ArticleDOI
Carbon materials for high volumetric performance supercapacitors: design, progress, challenges and opportunities
Qian Wang,Jun Yan,Zhuangjun Fan +2 more
TL;DR: A critical review of the factors influencing the volumetric performance of carbon materials from a structural design point of view and an in-depth summary of various promising approaches used to make significant research breakthroughs in recent years.
Journal ArticleDOI
Mesoporous materials for energy conversion and storage devices
Wei Li,Jun Liu,Dongyuan Zhao +2 more
TL;DR: A review of mesoporous materials can be found in this paper, where the authors summarize the primary methods for preparing mesopore materials and discuss their applications as electrodes and/or catalysts in solar cells, solar fuel production, rechargeable batteries, supercapacitors and fuel cells.
References
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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.
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A review of electrode materials for electrochemical supercapacitors
TL;DR: Two important future research directions are indicated and summarized, based on results published in the literature: the development of composite and nanostructured ES materials to overcome the major challenge posed by the low energy density.
Journal ArticleDOI
Carbon-based materials as supercapacitor electrodes
Lili Zhang,Xiu Song Zhao +1 more
TL;DR: This tutorial review provides a brief summary of recent research progress on carbon-based electrode materials forsupercapacitors, as well as the importance of electrolytes in the development of supercapacitor technology.
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Carbon-based Supercapacitors Produced by Activation of Graphene
Yanwu Zhu,Shanthi Murali,Meryl D. Stoller,K. J. Ganesh,Weiwei Cai,Paulo J. Ferreira,Adam Pirkle,Robert M. Wallace,Katie A. Cychosz,Matthias Thommes,Dong Su,Eric A. Stach,Rodney S. Ruoff +12 more
TL;DR: This work synthesized a porous carbon with a Brunauer-Emmett-Teller surface area, a high electrical conductivity, and a low oxygen and hydrogen content that has high values of gravimetric capacitance and energy density with organic and ionic liquid electrolytes.
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A highly ordered nanostructured carbon–sulphur cathode for lithium–sulphur batteries
TL;DR: In this paper, the authors report the feasibility to approach such capacities by creating highly ordered interwoven composites, where conductive mesoporous carbon framework precisely constrains sulphur nanofiller growth within its channels and generates essential electrical contact to the insulating sulphur.