A green and scalable route to yield porous carbon sheets from biomass for supercapacitors with high capacity

2018 ◽  
Vol 6 (3) ◽  
pp. 1244-1254 ◽  
Author(s):  
Cunjing Wang ◽  
Dapeng Wu ◽  
Hongju Wang ◽  
Zhiyong Gao ◽  
Fang Xu ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Porous Carbon ◽  
High Capacity ◽  
Inert Gas ◽  
Hierarchical Porous Carbon ◽  
Air Atmosphere ◽  
Green Route ◽  
Hierarchical Porous ◽  
Thin Structure

A green route is developed to prepare hierarchical porous carbon sheets (HPCS) from biomass directly under air atmosphere without inert gas protection. The as-prepared HPCS with ultra-thin structure, rich O doping sites and large SSA demonstrate excellent specific capacitance and stability when used in supercapacitor.

scholarly journals Hierarchical porous carbon derived from carboxylated coal-tar pitch for electrical double-layer capacitors

RSC Advances ◽  
2019 ◽  
Vol 9 (50) ◽  
pp. 29131-29140 ◽  
Author(s):  
Haiyang Wang ◽  
Hongzhe Zhu ◽  
Yixuan Li ◽  
Debang Qi ◽  
Shoukai Wang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Porous Carbon ◽  
Electrical Double Layer ◽  
Coal Tar ◽  
Electrochemical Stability ◽  
Coal Tar Pitch ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Electrical Double Layer Capacitors ◽  
Double Layer Capacitors

The specific capacitance of the HPC-2 electrode retention of 93.9% was obtained after 10 000 cycles, indicating good electrochemical stability.

An environmentally friendly strategy to prepare nitrogen-rich hierarchical porous carbon for high-performance supercapacitors

2020 ◽  
Vol 56 (14) ◽  
pp. 2182-2185 ◽  
Author(s):  
Huan Huang ◽  
Huaqiang Tan ◽  
Kaixiang Zou ◽  
Yuanfu Deng ◽  
Guohua Chen
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Environmentally Friendly ◽  
Hierarchical Porous Carbon ◽  
Green Route ◽  
Hierarchical Porous ◽  
First Time ◽  
Potassium Compound

A green route modulated by the addition of CaCl2 during the potassium compound-assisted synthesis is developed for the first time for the synthesis of NRHPC.

Facile one-step synthesis of highly graphitized hierarchical porous carbon nanosheets with large surface area and high capacity for lithium storage

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51146-51152 ◽  
Author(s):  
Qi Yang ◽  
Zongbin Zhao ◽  
Yanbao Jia ◽  
Yanfeng Dong ◽  
Zhengfa Yu ◽  
...  
Keyword(s):  
Surface Area ◽  
Porous Carbon ◽  
High Capacity ◽  
Large Specific Surface Area ◽  
Hierarchical Porous Carbon ◽  
Lithium Storage ◽  
Carbon Nanosheets ◽  
Graphitization Degree ◽  
Hierarchical Porous ◽  
One Step

Hierarchical porous carbon nanosheets with both high graphitization degree and large specific surface area were prepared and applied as anode for lithium storage, exhibiting a high reversible discharge capacity.

scholarly journals Three-Dimensional Hierarchical Porous Carbons Derived from Betelnut Shells for Supercapacitor Electrodes

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7793
Author(s):  
Arjunan Ariharan ◽  
Sung-Kon Kim
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Current Density ◽  
Porous Carbon ◽  
Three Dimensional ◽  
Energy Storage Materials ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
A Current ◽  
Charge Discharge

Electrochemical energy storage (EES) systems are attracting research attention as an alternative to fossil fuels. Advances in the design and composition of energy storage materials are particularly significant. Biomass waste-derived porous carbons are particularly suitable for use in EES systems as they are capable of tuning pore networks from hierarchical porous structures with high specific surface areas. These materials are also more sustainable and environmentally friendly and less toxic and corrosive than other energy storage materials. In this study, we report the creation of a three-dimensional hierarchical porous carbon material derived from betelnut shells. The synthesized three-dimensional (3D) hierarchical porous carbon electrode showed a specific capacitance of 290 F g−1 using 1 M KOH as an electrolyte at a current density of 1 A g−1 in three-electrode systems. Moreover, it offered a high charge/discharge stability of 94% over 5000 charge–discharge cycles at a current density of 5 A g−1. Two-electrode symmetric systems show a specific capacitance of 148 F g−1, good cyclic stability of 90. 8% for 5000 charge-discharge cycles, and high energy density of 41 Wh Kg−1 at the power density of 483 W Kg−1 in aqueous electrolyte.

Solid phase extraction of carbamate pesticides with banana peel derived hierarchical porous carbon prior to high performance liquid chromatography

2017 ◽  
Vol 9 (4) ◽  
pp. 593-599 ◽  
Author(s):  
Menghua Li ◽  
Caina Jiao ◽  
Xiumin Yang ◽  
Chun Wang ◽  
Qiuhua Wu ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Porous Carbon ◽  
High Performance ◽  
Solid Phase ◽  
Cost Effective ◽  
Banana Peel ◽  
Phase Extraction ◽  
Hierarchical Porous Carbon ◽  
Green Route ◽  
Hierarchical Porous

In this work, biomass derived hierarchical porous carbon (BHPC) was prepared via a facile, cost-effective and green route by carbonizing banana peel waste.

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.

Sign in / Sign up

Export Citation Format

Share Document