Journal ArticleDOI
3D carbon based nanostructures for advanced supercapacitors
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TLDR
In this article, a review of 3D carbon-based nanostructures for advanced supercapacitor applications is presented, which includes CNTs-based networks, graphene-based architectures, hierarchical porous carbon-bimodal structures, and other even more complex 3D configurations.Abstract:
Supercapacitors have attracted intense attention due to their great potential to meet the demand of both high energy density and power density in many advanced technologies. Various carbon-based nanocomposites are currently pursued as supercapacitor electrodes because of the synergistic effect between carbon (high power density) and pseudo-capacitive nanomaterials (high energy density). This feature article aims to review most recent progress on 3D (3D) carbon based nanostructures for advanced supercapacitor applications in view of their structural intertwinement which not only create the desired hierarchical porous channels, but also possess higher electrical conductivity and better structural mechanical stability. The carbon nanostructures comprise of CNTs-based networks, graphene-based architectures, hierarchical porous carbon-based nanostructures and other even more complex carbon-based 3D configurations. Their advantages and disadvantages are compared and summarized based on the results published in the literature. In addition, we also discuss and view the ongoing trends in materials development for advanced supercapacitors.read more
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Journal ArticleDOI
Design and Mechanisms of Asymmetric Supercapacitors.
Yuanlong Shao,Maher F. El-Kady,Jingyu Sun,Yaogang Li,Qinghong Zhang,Meifang Zhu,Hongzhi Wang,Bruce Dunn,Richard B. Kaner +8 more
TL;DR: This review looks at the essential energy-storage mechanisms and performance evaluation criteria for asymmetric supercapacitors to understand the wide-ranging research conducted in this area and highlights several key scientific challenges.
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
Development of Biochar-Based Functional Materials: Toward a Sustainable Platform Carbon Material
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
TL;DR: 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.
Journal ArticleDOI
Asymmetric Supercapacitor Electrodes and Devices.
TL;DR: Asymmetric supercapacitors assembled using two dissimilar electrode materials offer a distinct advantage of wide operational voltage window, and thereby significantly enhance the energy density, with the main focus on an extensive survey of the materials developed for ASC electrodes.
References
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Journal ArticleDOI
Theoretical approach to ion penetration into pores with pore fractal characteristics during double-layer charging/discharging on a porous carbon electrode.
Gyoung-Ja Lee,Su Il Pyun +1 more
TL;DR: The effects of pore fractal characteristics on the kinetics of double-layer charging/discharging on a porous carbon electrode were investigated by using theoretical calculations of potentiostatic current transients (PCTs) and cyclic voltammograms (CVs).