A flexible graphene–carbon fiber composite electrode with high surface area-normalized capacitance

2019 ◽  
Vol 3 (7) ◽  
pp. 1827-1832 ◽  
Author(s):  
Xiaoming Sun ◽  
Hao Lu ◽  
Thomas E. Rufford ◽  
Rohit Ranganathan Gaddam ◽  
Timothy T. Duignan ◽  
...  

The effective surface area utilization, carbon nanostructure and pores all contribute to high surface area-normalized capacitance.

2002 ◽  
Vol 74 (24) ◽  
pp. 6364-6369 ◽  
Author(s):  
Richard S. Kelly ◽  
Brian D. Coleman ◽  
Tina Huang ◽  
Prachak Inkaew ◽  
Theodore Kuwana

RSC Advances ◽  
2019 ◽  
Vol 9 (57) ◽  
pp. 33117-33123 ◽  
Author(s):  
Yi-Hung Liu ◽  
Heng-Han Lin ◽  
Tsung-Yu Tsai ◽  
Chun-Han Hsu

A binder-free CNT/CF composite electrode is developed via electrophoretic deposition, offering favorable electrochemical performances and stability as a self-standing lithium-ion battery anode.


2010 ◽  
Vol 114 (6) ◽  
pp. 2640-2644 ◽  
Author(s):  
D. Strmcnik ◽  
Nejc Hodnik ◽  
S. B. Hocevar ◽  
D. van der Vliet ◽  
M. Zorko ◽  
...  

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 866 ◽  
Author(s):  
Ying He ◽  
Li Ma ◽  
Liya Zhou ◽  
Guanhua Liu ◽  
Yanjun Jiang ◽  
...  

A nano-form composite of MXenes (Ti3C2Tx, Tx = -O, -OH, -F) was synthesized through depositing bismuth-nanoparticle (BiNPs) onto Ti3C2Tx sheets. Because of the preventive effect of the two-dimensional layered structure of Ti3C2Tx, the nanoparticles of Bi were uniform and well attached on the Ti3C2Tx. The obtained BiNPs/Ti3C2Tx nano-composite was applied for sensors construction of electrochemical detecting of Pb2+ and Cd2+ heavy metal ions. The produced BiNPs@Ti3C2Tx-based sensor showed high effective surface area and excellent conductivity. Also, the BiNPs were efficient for anodic-stripping voltammetric to detect heavy metal ions. After conditions optimization, the BiNPs@Ti3C2Tx nano-sensor could detect Pb2+ and Cd2+ simultaneously and the detection limits were 10.8 nM for Pb2+ and 12.4 nM for Cd2+. The BiNPs@Ti3C2Tx was promising for detecting heavy metal ions due to their high surface area, fast electron-transfer ability, environmental friendliness, and facial preparation.


2020 ◽  
Author(s):  
Priji Chandran ◽  
Sundara Ramaprabhu

One of the effective ways to increase the electrocatalytic activity of carbon based electrocatalyst in a fuel cell is by in-situ incorporation of heteroatom into the carbon nanostructure. Herein, a cost effective catalyst support material, nitrogen rich carbon nanostructure (NCNS) with high surface area and tubular morphology was synthesized. NCNS supported palladium-alloy based electrocatalyst (Pd3Co/NCNS) was successfully prepared and used on both sides of a fuel cell as potential alternative to expensive Pt-based electrocatalysts. The large number of nitrogen-carbon moieties present in NCNS served as anchoring sites for catalyst nanoparticles. Moreover, the tubular morphology and high surface area plays an important role in enhanced electrochemical activity of the prepared nanocomposite. The Pd-based bimetallic alloy dispersed on NCNS exhibited high activity towards both oxidation of hydrogen and reduction of oxygen in acidic medium. Thus, a fully Pt-free electrocatalyst was constructed using a cost effective electrocatalyst. The peak power density achieved using Pd3Co/NCNS at both anode and cathode simultaneously was found to be almost 25 % of the maximum power density attained using commercial Pt/C on both sides, which is the maximum value reported so far in PEMFC without using Pt on either side.


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