Synthesis of a novel three-dimensional porous carbon material and its highly selective Cr(VI) removal in wastewater

2021 ◽  
Vol 306 ◽  
pp. 127204
Author(s):  
Hongxu Liang ◽  
Hongwei Zhang ◽  
Pinye Zhao ◽  
Xinkun Zhao ◽  
Haowei Sun ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Material ◽  
Three Dimensional ◽  
Porous Carbon Material

scholarly journals Digested sludge-derived three-dimensional hierarchical porous carbon for high-performance supercapacitor electrode

2018 ◽  
Vol 5 (4) ◽  
pp. 172456 ◽  
Author(s):  
Jia-Jia Zhang ◽  
Hao-Xiang Fan ◽  
Xiao-Hu Dai ◽  
Shi-Jie Yuan
Keyword(s):  
Porous Carbon ◽  
Carbon Material ◽  
High Performance ◽  
Three Dimensional ◽  
Value Added ◽  
Porous Carbon Material ◽  
Activation Process ◽  
Hierarchical Porous Carbon ◽  
Digested Sludge ◽  
Hierarchical Porous

Digested sludge, as the main by-product of the sewage sludge anaerobic digestion process, still contains considerable organic compounds. In this protocol, we report a facile method for preparing digested sludge-derived self-doped porous carbon material for high-performance supercapacitor electrodes via a sustainable pyrolysis/activation process. The obtained digested sludge-derived carbon material (HPDSC) exhibits versatile O-, N-doped hierarchical porous framework, high specific surface area (2103.6 m 2  g −1 ) and partial graphitization phase, which can facilitate ion transport, provide more storage sites for electrolyte ions and enhance the conductivity of active electrode materials. The HPDSC-based supercapacitor electrodes show favourable energy storage performance, with a specific capacitance of 245 F g −1 at 1.0 A g −1 in 0.5 M Na 2 SO 4 ; outstanding cycling stability, with 98.4% capacitance retention after 2000 cycles; and good rate performance (211 F g −1 at 11 A g −1 ). This work provides a unique self-doped three-dimensional hierarchical porous carbon material with a favourable charge storage capacity and at the same time finds a high value-added and environment-friendly strategy for disposal and recycling of digested sludge.

Recovery of uranium(vi) from aqueous solutions using a modified honeycomb-like porous carbon material

2017 ◽  
Vol 46 (2) ◽  
pp. 420-429 ◽  
Author(s):  
Jiahui Zhu ◽  
Qi Liu ◽  
Zhanshuang Li ◽  
Jingyuan Liu ◽  
Hongsen Zhang ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Porous Carbon ◽  
Carbon Material ◽  
Three Dimensional ◽  
Porous Carbon Material ◽  
Composite Adsorbent

A novel composite adsorbent, consisting of three-dimensional honeycomb-like porous carbon and MnO2 nanowires (HLPC/MnO2), has been successfully synthesized and is an excellent adsorbent for removing uranium(vi) ions from aqueous solutions.

Elastic porous carbon material supported sulfur cathodes for Li–S battery design

2016 ◽  
Vol 40 (1) ◽  
pp. 93-96 ◽  
Author(s):  
Weidong Xiao ◽  
Liwei Mi ◽  
Shizhong Cui ◽  
Hongwei Hou ◽  
Weihua Chen
Keyword(s):  
Porous Carbon ◽  
Carbon Material ◽  
Coulombic Efficiency ◽  
Three Dimensional ◽  
Current Collector ◽  
Carbon Foam ◽  
Porous Carbon Material ◽  
Battery Design ◽  
Sulfur Cathodes ◽  
A Current

A three-dimensional elastic carbon foam as a current collector and freestanding electrode for Li–S batteries is presented, and its coulombic efficiency of 98% over 100 cycles is achieved.

scholarly journals Assessing Strong Consistency of Symmetrical Solid-state Supercapacitors Based on Three-dimensional Porous Carbon Material

2021 ◽  
Author(s):  
P.A. Le ◽  
Van Qui Le ◽  
Thi Viet Bac Phung ◽  
Nghia Trong Nguyen
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Specific Capacitance ◽  
Current Density ◽  
Porous Carbon ◽  
Carbon Material ◽  
Chemical Activation ◽  
Three Dimensional ◽  
Porous Carbon Material ◽  
Maximum Specific Capacitance

Abstract Three-dimensional (3D) porous carbon material enhances the electrochemical performance of symmetrical solid-state supercapacitors which are prepared by using abundant biomass waste as electrodes and (PVA-Li2SO4) gel polymer electrolyte. A saving and simple carbonization method with KOH chemical activation is developed for synthesizing highly porous carbon from peanut shell with high specific surface area of 1348 m2 g–1, which can be reused the chemical activation solution. The electrodes making by such three-dimensional porous carbon in a 1 M Li2SO4 electrolyte demonstrates a maximum specific capacitance of 386 F g–1 at current density of 2 A g–1, energy density and power density of 53.61 Wh k g–1 and 1000 W kg–1, respectively. The symmetrical solid state supercapacitors with sandwich structure of (3D porous carbon P/PVA-Li2SO4/3D porous carbon P) exhibits a maximum specific capacitance of 116 F g-1 at current density of 0.5 A g–1. The energy density and power density are the value of 9 W h kg–1 and 380 W kg–1, respectively. Further, the supercapacitors also demonstrate good cycling stability 89 % retention after 7000 cycles.

scholarly journals Synthesis of porous carbon material based on biomass derived from hibiscus sabdariffa fruits as active electrodes for high-performance symmetric supercapacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 354-363
Author(s):  
Hamouda Adam Hamouda ◽  
Shuzhen Cui ◽  
Xiuwen Dai ◽  
Lele Xiao ◽  
Xuan Xie ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Porous Carbon ◽  
Carbon Material ◽  
High Performance ◽  
Porous Carbon Material ◽  
Hibiscus Sabdariffa ◽  
Biomass Waste ◽  
Renewable Energy Storage ◽  
Carbon Based

Carbon-based materials are manufactured as high-performance electrodes using biomass waste in the renewable energy storage field.

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