Chitosan-Based Synthesis of O, N, and P Codoped Hierarchical Porous Carbon as Electrode Materials for Supercapacitors

2021 ◽  
Author(s):  
Jin-Long Yi ◽  
Xiang-Hui Yu ◽  
Ru-Liang Zhang ◽  
Lei Liu
Keyword(s):  
Porous Carbon ◽  
Electrode Materials ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous

scholarly journals Hierarchical porous carbon spheres constructed from coal as electrode materials for high performance supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (72) ◽  
pp. 45363-45368 ◽  
Author(s):  
Mingxi Guo ◽  
Jixi Guo ◽  
Fenglian Tong ◽  
Dianzeng Jia ◽  
Wei Jia ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Spheres ◽  
Hierarchical Porous Carbon ◽  
Supercapacitor Electrode ◽  
One Pot ◽  
Hierarchical Porous ◽  
Porous Carbon Spheres ◽  
Supercapacitor Electrode Materials

Hierarchical porous carbon spheres (PCS) were prepared by a simple one-pot spray pyrolysis of coal oxide solution for use as supercapacitor electrode materials.

Ionothermal synthesis of microporous and mesoporous carbon aerogels from fructose as electrode materials for supercapacitors

2016 ◽  
Vol 4 (12) ◽  
pp. 4497-4505 ◽  
Author(s):  
Xiao-Xiao Lin ◽  
Bin Tan ◽  
Lu Peng ◽  
Zhao-Feng Wu ◽  
Zai-Lai Xie
Keyword(s):  
Ionic Liquid ◽  
Porous Carbon ◽  
Mesoporous Carbon ◽  
Electrode Materials ◽  
Carbon Aerogels ◽  
Hierarchical Porous Carbon ◽  
Ionothermal Synthesis ◽  
Hierarchical Porous ◽  
One Step ◽  
Iron Based

In the present work, a series of hierarchical porous carbon monoliths were prepared from fructoseviaa one-step ionothermal carbonization approach using an iron-based ionic liquid as solvent, and a porogenic agent.

Construction of strawberry-like Ni3S2@Co9S8 heteronanoparticle-embedded biomass-derived 3D N-doped hierarchical porous carbon for ultrahigh energy density supercapacitors

2019 ◽  
Vol 7 (29) ◽  
pp. 17345-17356 ◽  
Author(s):  
Shifu Wang ◽  
Zuoyi Xiao ◽  
Shangru Zhai ◽  
Haisong Wang ◽  
Weijie Cai ◽  
...  
Keyword(s):  
Energy Density ◽  
Porous Structure ◽  
Porous Carbon ◽  
Electrode Materials ◽  
High Surface ◽  
High Surface Area ◽  
Ultrahigh Energy ◽  
Hierarchical Porous Structure ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous

The design of advanced supercapacitors requires electrode materials that combine high surface area with a developed hierarchical porous structure to facilitate ion transport and electrolyte permeability.

scholarly journals Bio-Derived Carbon with Tailored Hierarchical Pore Structures and Ultra-High Specific Surface Area for Superior and Advanced Supercapacitors

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 27
Author(s):  
Fuming Zhang ◽  
Xiangshang Xiao ◽  
Dayakar Gandla ◽  
Zhaoxi Liu ◽  
Daniel Q. Tan ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Porous Carbon ◽  
Electrode Materials ◽  
High Specific Surface Area ◽  
Specific Power ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Ion Size

We report here on a hollow-fiber hierarchical porous carbon exhibiting an ultra-high specific surface area, synthesized by a facile method of carbonization and activation, using the Metaplexis Japonica (MJ) shell. The Metaplexis Japonica-based activated carbon demonstrated a very high specific surface area of 3635 m2 g−1. Correspondingly, the derived carbonaceous material delivers an ultra-high capacitance and superb cycle life in an alkaline electrolyte. The pore-ion size compatibility is optimized using tailored hierarchical porous carbon and different ion sized organic electrolytes. In ionic liquids nonaqueous based electrolytes we tailored the MJ carbon pore structure to the electrolyte ion size. The corresponding supercapacitor shows a superior rate performance and low impedance, and the device records specific energy and specific power densities as high as 76 Wh kg−1 and 6521 W kg−1, as well as a pronounced cycling durability in the ionic liquid electrolytes. Overall, we suggest a protocol for promising carbonaceous electrode materials enabling superior supercapacitors performance.

scholarly journals Preparation of high conductivity hierarchical porous carbon based on sodium lignosulfonate with pre-crosslinking

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 8995-9012
Author(s):  
Yanjie Yi ◽  
Yi Hou ◽  
Youming Li
Keyword(s):  
Specific Capacitance ◽  
Porous Carbon ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
High Conductivity ◽  
Hierarchical Porous Carbon ◽  
Sodium Lignosulfonate ◽  
Paper Mills ◽  
The Sustainable Development ◽  
Hierarchical Porous

The electrode material plays a key role in the performance of a supercapacitor. This study reports a method to prepare high conductivity hierarchical porous carbon with pre-crosslinking based on sodium lignosulfonate, which usually is burned as a waste effluent in pulp and paper mills. Results indicate pre-crosslinking with glutaraldehyde and ethyleneimine polymer, activation with less potassium hydroxide KOH, and finally carbonization to form carbon materials of hyperbranched macromolecules with ultra-rich specific surface area of 2780 m2/g and reasonable pore size distribution. The prepared carbon material showed high specific capacitance and good electrochemical performance when used as electrode materials for supercapacitors. At 0.5 A/g, the specific capacitance was 305 F/g, and the specific capacitance decay was only 6.2%, even after 2500 consecutive charge/discharge cycles, which revealed the huge potential for the supercapacitor characteristics with long service life. The results provided a high-valued application of industrial waste, which is important to further the sustainable development of the national economy.

Hierarchical porous carbon derived from acai seed biowaste for supercapacitor electrode materials

2020 ◽  
Vol 31 (15) ◽  
pp. 12148-12157 ◽  
Author(s):  
Luiz K. C. de Souza ◽  
João Carlos Martins ◽  
Diogo Padilha Oliveira ◽  
Carlos Sergio Ferreira ◽  
Alexandre A. S. Gonçalves ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Electrode Materials ◽  
Hierarchical Porous Carbon ◽  
Supercapacitor Electrode ◽  
Hierarchical Porous ◽  
Supercapacitor Electrode Materials

scholarly journals Nest-Like MnO2 Nanowire/Hierarchical Porous Carbon Composite for High-Performance Supercapacitor from Oily Sludge

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2715
Author(s):  
Xiaoyu Li ◽  
Dong Han ◽  
Zhiqiang Gong ◽  
Zhenbo Wang
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Hot Spot ◽  
Rate Capability ◽  
Precipitation Method ◽  
Oily Sludge ◽  
Hierarchical Porous Carbon ◽  
Capacitance Performance ◽  
Hierarchical Porous

In the aim to go beyond the performance tradeoffs of classic electric double-layer capacitance and pseudo-capacitance, composites made out of carbon and pseudo-capacitive materials have been a hot-spot strategy. In this paper, a nest-like MnO2 nanowire/hierarchical porous carbon (HPC) composite (MPC) was successfully fabricated by a controllable in situ chemical co-precipitation method from oily sludge waste. Due to the advantages of high surface area and fast charge transfer for HPC as well as the large pseudo-capacitance for MnO2 nanowires, the as-prepared MPC has good capacitance performance with a specific capacitance of 437.9 F g−1 at 0.5 A g−1, favorable rate capability of 79.2% retention at 20 A g−1, and long-term cycle stability of 78.5% retention after 5000 cycles at 5 A g−1. Meanwhile, an asymmetric supercapacitor (ASC) was assembled using MPC as the cathode while HPC was the anode, which exhibits a superior energy density of 58.67 W h kg−1 at the corresponding power density of 498.8 W kg−1. These extraordinary electrochemical properties highlight the prospect of our waste-derived composites electrode material to replace conventional electrode materials for a high-performance supercapacitor.

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