Hierarchical Activated Carbon Fibers as a Sustainable Electrode and Natural Seawater as a Sustainable Electrolyte for High‐Performance Supercapacitor

2020 ◽  
Vol 8 (9) ◽  
pp. 2000417
Author(s):  
Navakanth Vijay Challagulla ◽  
Manavalan Vijayakumar ◽  
Duggirala Sri Rohita ◽  
George Elsa ◽  
Ammaiyappan Bharathi Sankar ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
High Performance ◽  
Natural Seawater ◽  
Activated Carbon Fibers

In situ growth of MnO2 nanosheets on activated carbon fibers: a low-cost electrode for high performance supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14819-14825 ◽  
Author(s):  
Kai Zhu ◽  
Yu Wang ◽  
Joel A. Tang ◽  
Hailong Qiu ◽  
Xing Meng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Hydrothermal Method ◽  
Carbon Fibers ◽  
High Performance ◽  
Low Cost ◽  
Activated Carbon Fibers ◽  
In Situ Growth ◽  
Mno2 Nanosheets ◽  
Microwave Assisted

MnO2 nanosheets were successfully grown in situ on the surface of activated carbon fibers (ACFs) via a facile microwave-assisted hydrothermal method.

A high-performance supercapacitor based on activated carbon fibers with an optimized pore structure and oxygen-containing functional groups

2017 ◽  
Vol 1 (5) ◽  
pp. 958-966 ◽  
Author(s):  
Kai Zhu ◽  
Yu Wang ◽  
Joel A. Tang ◽  
Shaohua Guo ◽  
Zhongmin Gao ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Pore Structure ◽  
Functional Groups ◽  
Carbon Fibers ◽  
High Performance ◽  
Cycling Performance ◽  
Activated Carbon Fibers ◽  
Pore Structures

Activated carbon fibers with optimized pore structures and oxygen-containing functional groups display a remarkable capacitance and an excellent cycling performance.

scholarly journals Supercapacitor Electrodes from Viscose-Based Activated Carbon Fibers: Significant Yield and Performance Improvement Using Diammonium Hydrogen Phosphate as Impregnating Agent

2020 ◽  
Vol 6 (2) ◽  
pp. 17
Author(s):  
Stefan Breitenbach ◽  
Alexander Lumetzberger ◽  
Mathias Andreas Hobisch ◽  
Christoph Unterweger ◽  
Stefan Spirk ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
High Performance ◽  
Electrode Materials ◽  
High Energy ◽  
Activated Carbon Fibers ◽  
Hydrogen Phosphate ◽  
Diammonium Hydrogen Phosphate ◽  
Viscose Fibers ◽  
Diammonium Hydrogen

Viscose fibers were impregnated with different concentrations of diammonium hydrogen phosphate (DAHP), carbonized, activated, and tested as high-performance electrode materials for supercapacitors. The yield of these activated carbon fibers (ACFs) could be increased by a factor of 14 by using DAHP compared to ACF without impregnation. These specific activation procedures yielded a high specific surface area of more than 2700 m2·g−1 with a pore size distribution (PSD) suitable for use as a supercapacitor electrode. The electrode materials were implemented in symmetric supercapacitors using TEMA BF4 as electrolyte and cyclic voltammetry measurements showed high specific capacitances of up to 167 F·g−1. Furthermore, the devices showed high energy densities of up to 21.4 W·h·kg−1 and high-power densities of up to 8.7 kW·kg−1. The supercapacitors featured high capacity retention (96%) after 10,000 cycles. These results show that ACFs made of viscose fibers, previously impregnated with DAHP, can be used as high-performance electrodes in supercapacitors for energy storage applications.

Sustainable activated carbon fibers from liquefied wood with controllable porosity for high-performance supercapacitors

2014 ◽  
Vol 2 (30) ◽  
pp. 11706-11715 ◽  
Author(s):  
Zhi Jin ◽  
Xiaodong Yan ◽  
Yunhua Yu ◽  
Guangjie Zhao
Keyword(s):  
Activated Carbon ◽  
Specific Capacitance ◽  
Surface Area ◽  
Carbon Fibers ◽  
High Performance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Activated Carbon Fibers ◽  
Micropore Surface Area ◽  
Liquefied Wood

The combination of the high micropore surface area and the controlled mesopore size and mesopore/micropore ratio is responsible for high specific capacitance and excellent rate capability.

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