A novel polysulfone–polyvinylpyrrolidone membrane with superior proton-to-vanadium ion selectivity for vanadium redox flow batteries

2016 ◽  
Vol 4 (4) ◽  
pp. 1174-1179 ◽  
Author(s):  
Chunxiao Wu ◽  
Shanfu Lu ◽  
Haining Wang ◽  
Xin Xu ◽  
Sikan Peng ◽  
...  

Outstanding performance in VRFBs: a novel polysulfone–polyvinylpyrrolidone membrane with high ion selectivity, superior stability and low cost is constructed for VRFBs. The VRFB with the PSF–PVP–50 membrane exhibits impressive CE (98%), EE (89%), and excellent stability during the 2000 h continuous charge–discharge cycling test.

2019 ◽  
Vol 297 ◽  
pp. 31-39 ◽  
Author(s):  
Pooria Moozarm Nia ◽  
Ebrahim Abouzari-Lotf ◽  
Pei Meng Woi ◽  
Yatimah Alias ◽  
Teo Ming Ting ◽  
...  

2017 ◽  
Vol 1 (10) ◽  
pp. 2091-2100 ◽  
Author(s):  
Daniel Manaye Kabtamu ◽  
Yu-Chung Chang ◽  
Guan-Yi Lin ◽  
Anteneh Wodaje Bayeh ◽  
Jian-Yu Chen ◽  
...  

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.


Author(s):  
Guixiang Wang ◽  
Haitao Zou ◽  
Xiaobo Zhu ◽  
Mei Ding ◽  
Chuankun Jia

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.


RSC Advances ◽  
2020 ◽  
Vol 10 (29) ◽  
pp. 17235-17246
Author(s):  
Lei Wang ◽  
Shuangyu Li ◽  
Dan Li ◽  
Qinhao Xiao ◽  
Wenheng Jing

The open flower-like structure facilitates vanadium ion transport. The capacity and efficiency of a battery using MoS2/GF are dramatically increased.


2019 ◽  
Vol 90 ◽  
pp. 01004 ◽  
Author(s):  
Saidatul Sophia ◽  
Ebrahim Abouzari Lotf ◽  
Arshad Ahmad ◽  
Pooria Moozarm Nia ◽  
Roshafima Rasit Ali

Graphene oxide (GO) has attracted tremendous attention in membrane-based separation field as it can filter ions and molecules. Recently, GO-based materials have emerged as excellent modifiers for vanadium redox flow battery (VRFB) application. Its high mechanical and chemical stability, nearly frictionless surface, high flexibility, and low cost make GO-based materials as proper materials for the membranes in VRFB. In VRFB, a membrane acts as the key component to determine the performance. Therefore, employing low vanadium ion permeability with excellent stability membrane in vanadium electrolytes is important to ensure high battery performance. Herein, recent progress of GO-modified membranes for VRFB is briefly reviewed. This review begins with current membranes used for VRFB, followed by the challenges faced by the membranes. In addition, the transport mechanism of vanadium ion and the stability properties of GO-modified membranes are also discussed to enlighten the role of GO in the modified membranes.


2019 ◽  
Vol 7 (20) ◽  
pp. 12669-12680 ◽  
Author(s):  
Yuxia Zhang ◽  
Haixia Wang ◽  
Bo Liu ◽  
Jingli Shi ◽  
Jun Zhang ◽  
...  

A good trade-off effect between proton conductivity and vanadium ion permeability contributing ultra-high ion selectivity is demonstrated for SPEEK/ZC-GO hybrid membranes influenced by zwitterionic ZC-GO nanofillers.


2018 ◽  
Vol 6 (28) ◽  
pp. 13908-13917 ◽  
Author(s):  
Anteneh Wodaje Bayeh ◽  
Daniel Manaye Kabtamu ◽  
Yu-Chung Chang ◽  
Guan-Cheng Chen ◽  
Hsueh-Yu Chen ◽  
...  

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).


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