Synergistic effects of a TiNb2O7–reduced graphene oxide nanocomposite electrocatalyst for high-performance all-vanadium redox flow batteries

2018 ◽  
Vol 6 (28) ◽  
pp. 13908-13917 ◽  
Author(s):  
Anteneh Wodaje Bayeh ◽  
Daniel Manaye Kabtamu ◽  
Yu-Chung Chang ◽  
Guan-Cheng Chen ◽  
Hsueh-Yu Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
High Performance ◽  
Freeze Drying ◽  
Synergistic Effects ◽  
Low Cost ◽  
Redox Flow Batteries ◽  
Reduced Graphene ◽  
Flow Batteries ◽  
Vanadium Redox

In this study, a simple, low-cost, and powerful titanium niobium oxidereduced graphene oxide (TiNb2O7–rGO) nanocomposite electrocatalyst was synthesized through dispersion and blending in aqueous solution followed by freeze-drying and annealing for all-vanadium redox flow batteries (VRFBs).

Electrodeposited reduced graphene oxide as a highly efficient and low-cost electrocatalyst for vanadium redox flow batteries

2019 ◽  
Vol 297 ◽  
pp. 31-39 ◽  
Author(s):  
Pooria Moozarm Nia ◽  
Ebrahim Abouzari-Lotf ◽  
Pei Meng Woi ◽  
Yatimah Alias ◽  
Teo Ming Ting ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Low Cost ◽  
Redox Flow Batteries ◽  
Highly Efficient ◽  
Reduced Graphene ◽  
Flow Batteries ◽  
Vanadium Redox

scholarly journals Exploration of reduced graphene oxide microparticles as electrocatalytic materials in vanadium redox flow batteries

2021 ◽  
Author(s):  
Amira Alazmi ◽  
Charles Wan ◽  
Pedro Costa ◽  
Fikile Brushett
Keyword(s):  
Graphene Oxide ◽  
Critical Point ◽  
Reduced Graphene Oxide ◽  
Surface Area ◽  
Reaction Rates ◽  
Redox Flow Batteries ◽  
Reduced Graphene ◽  
Critical Point Drying ◽  
Flow Batteries ◽  
Vanadium Redox

Augmenting reaction rates on porous carbon electrodes is critical for reducing the cost of all-vanadium redox flow batteries (VRFBs). To this end, reduced graphene oxide (rGO) based carbons hold promise, demonstrating high specific surface area, chemomechanical stability, and electrochemical activity. While initial efforts have shown that rGOs can enhance VRFB performance, the range of unique processing conditions leads to a collection of materials with disparate elemental composition and porous structure, thus obscuring performance-determining characteristics behind redox reactions and frustrating the development of generalizable design principles. Here, we generate rGO electrocatalysts of nearly identical chemical composition but different textures (i.e., surface area and pore structure) by varying the drying step in the graphene synthesis (i.e., vacuum-drying vs. carbon dioxide critical point drying). We apply spectroscopic and electrochemical techniques on the synthesized rGOs, observing a three-fold increase in BET surface area using critical point drying. We subsequently decorate carbon felt electrodes – both pristine and thermally activated – with rGO microparticles via a flow deposition procedure, and evaluate their performance and durability in a VRFB cell. The synthesis approach and findings described in this work inform and complement efforts to advance the material science and engineering of rGO electrocatalysts.

RuSe/reduced graphene oxide: an efficient electrocatalyst for VO2+/VO2+ redox couples in vanadium redox flow batteries

RSC Advances ◽  
2014 ◽  
Vol 4 (39) ◽  
pp. 20379-20381 ◽  
Author(s):  
Pengxian Han ◽  
Xiaogang Wang ◽  
Lixue Zhang ◽  
Tianshi Wang ◽  
Jianhua Yao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Redox Flow Batteries ◽  
Redox Couples ◽  
Electrocatalytic Performance ◽  
Reduced Graphene ◽  
Flow Batteries ◽  
Vanadium Redox

Selenium modified ruthenium/reduced graphene oxide (RuSe/rGO) exhibits excellent electrocatalytic performance towards VO2+/VO2+ redox couples in vanadium redox flow batteries.

Metal-organic framework derived metal oxide/reduced graphene oxide nanocomposite, a new tool for the determination of dipyridamole

2021 ◽  
Author(s):  
Naeime Salandari-Jolge ◽  
Ali A. Ensafi ◽  
Behzad Rezaei
Keyword(s):  
Myocardial Infarction ◽  
Graphene Oxide ◽  
High Performance ◽  
High Selectivity ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Heart Patients ◽  
Reduced Graphene ◽  
Metal Organic

Dipyridamole is a prescribed medication used to treat cardiovascular diseases, angina pectoris, imaging tests for heart patients, and myocardial infarction. Therefore, high selectivity and sensitivity, low cost, and high-performance speed...

Chloride ions as an electrolyte additive for high performance vanadium redox flow batteries

2021 ◽  
Vol 289 ◽  
pp. 116690
Author(s):  
Z.H. Zhang ◽  
L. Wei ◽  
M.C. Wu ◽  
B.F. Bai ◽  
T.S. Zhao
Keyword(s):  
High Performance ◽  
Chloride Ions ◽  
Electrolyte Additive ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

Three-dimensional annealed WO3 nanowire/graphene foam as an electrocatalytic material for all vanadium redox flow batteries

2017 ◽  
Vol 1 (10) ◽  
pp. 2091-2100 ◽  
Author(s):  
Daniel Manaye Kabtamu ◽  
Yu-Chung Chang ◽  
Guan-Yi Lin ◽  
Anteneh Wodaje Bayeh ◽  
Jian-Yu Chen ◽  
...  
Keyword(s):  
Graphene Sheet ◽  
Tungsten Trioxide ◽  
Low Cost ◽  
Three Dimensional ◽  
Graphene Foam ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

This paper presents a three-dimensional annealed tungsten trioxide nanowire/graphene sheet (3D annealed WO3 NWs/GS) foam as an excellent and low-cost electrocatalyst.

Recent progress in zinc-based redox flow batteries: a review

2021 ◽  
Author(s):  
Guixiang Wang ◽  
Haitao Zou ◽  
Xiaobo Zhu ◽  
Mei Ding ◽  
Chuankun Jia
Keyword(s):  
High Performance ◽  
Large Scale ◽  
Electrode Materials ◽  
Low Cost ◽  
Ion Selectivity ◽  
Commercial Application ◽  
Environmental Friendliness ◽  
Membrane Materials ◽  
Redox Flow Batteries ◽  
Flow Batteries

Abstract Zinc-based redox flow batteries (ZRFBs) have been considered as ones of the most promising large-scale energy storage technologies owing to their low cost, high safety, and environmental friendliness. However, their commercial application is still hindered by a few key problems. First, the hydrogen evolution and zinc dendrite formation cause poor cycling life, of which needs to ameliorated or overcome by finding suitable anolytes. Second, the stability and energy density of catholytes are unsatisfactory due to oxidation, corrosion, and low electrolyte concentration. Meanwhile, highly catalytic electrode materials remain to be explored and the ion selectivity and cost efficiency of membrane materials demands further improvement. In this review, we summarize different types of ZRFBs according to their electrolyte environments including ZRFBs using neutral, acidic, and alkaline electrolytes, then highlight the advances of key materials including electrode and membrane materials for ZRFBs, and finally discuss the challenges and perspectives for the future development of high-performance ZRFBs.

scholarly journals High performance electrodes in vanadium redox flow batteries through oxygen-enriched thermal activation

2015 ◽  
Vol 294 ◽  
pp. 333-338 ◽  
Author(s):  
Alan M. Pezeshki ◽  
Jason T. Clement ◽  
Gabriel M. Veith ◽  
Thomas A. Zawodzinski ◽  
Matthew M. Mench
Keyword(s):  
High Performance ◽  
Thermal Activation ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox
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