SPEEK/Graphene oxide nanocomposite membranes with superior cyclability for highly efficient vanadium redox flow battery

2014 ◽  
Vol 2 (31) ◽  
pp. 12423-12432 ◽  
Author(s):  
Wenjing Dai ◽  
Yi Shen ◽  
Zhaohua Li ◽  
Lihong Yu ◽  
Jingyu Xi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Nanocomposite Membranes ◽  
Flow Battery ◽  
Highly Efficient ◽  
Vanadium Redox ◽  
Vanadium Ions

Randomly dispersed GO nanosheets in SPEEK can effectively block the crossover of vanadium ions, resulting in superior cyclability of VRFB.

A highly-efficient composite polybenzimidazole membrane for vanadium redox flow battery

2021 ◽  
Vol 489 ◽  
pp. 229502
Author(s):  
Y.H. Wan ◽  
J. Sun ◽  
H.R. Jiang ◽  
X.Z. Fan ◽  
T.S. Zhao
Keyword(s):  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Highly Efficient ◽  
Vanadium Redox

Preparation and characterization of SPES/PVA (double-layer) membrane for vanadium redox flow battery

2018 ◽  
Vol 31 (2) ◽  
pp. 148-153 ◽  
Author(s):  
Jili Xie ◽  
Guanlin Li ◽  
Wang Tan
Keyword(s):  
Double Layer ◽  
Layer Structure ◽  
Coulombic Efficiency ◽  
Cell Performance ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Layer Membrane ◽  
Vanadium Redox ◽  
Vanadium Ions

The double-layer membrane consisting of sulfonated poly(ether sulfone) (SPES) sub-layer and polyvinyl alcohol (PVA) sub-layer (denoted as SPES/PVA membrane) was prepared and employed as the separator for vanadium redox flow battery (VRB) system to evaluate the vanadium ions permeability and cell performance. The SPES/PVA membrane is a double-layer structure and exhibits dramatically lower vanadium ions permeability and better cell performance compared to the pristine SPES membrane, PVA membrane, and Nafion117 membrane. The vanadium ion permeability of SPES/PVA membrane is one order of magnitude lower than that of Nafion117 membrane. In further work, the single cell with SPES/PVA membrane showed significantly lower capacity loss, higher coulombic efficiency (>92.5%), and higher energy efficiency (>83.9%) than Nafion117 membrane. In the self-discharge test, SPES/PVA membrane showed 1.8 times longer duration in the open circuit decay than Nafion117 membrane. With all the good properties and low cost, this new kind of double-layer membrane is suggested to have excellent commercial prospects as an ion exchange membrane for VRB systems.

Sub-5 nm Graphene Oxide Nanofilm with Exceptionally High H+/V Selectivity for Vanadium Redox Flow Battery

2019 ◽  
Vol 2 (7) ◽  
pp. 4590-4596 ◽  
Author(s):  
Seul Chan Park ◽  
Tae Hoon Lee ◽  
Gi Hyeon Moon ◽  
Byung Su Kim ◽  
Jong Min Roh ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Vanadium Redox

Advanced Sulfonated Poly(Ether Ether Ketone)/Graphene-Oxide/Titanium Dioxide Nanoparticle Composited Membrane with Superior Cyclability for Vanadium Redox Flow Battery

2020 ◽  
Vol 20 (8) ◽  
pp. 4714-4721 ◽  
Author(s):  
Jiaye Ye ◽  
Chun Wu ◽  
Wei Qin ◽  
Fangfang Zhong ◽  
Mei Ding
Keyword(s):  
Graphene Oxide ◽  
Hybrid Membrane ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Vanadium Redox ◽  
Vanadium Ions ◽  
Sulfonated Poly

The purpose of this study was to improve the repulsion ability of sulfonated poly(ether ether ketone) (SPEEK) membrane for the vanadium ions crossover. For this purpose graphene oxide (GO) nanosheet and titanium dioxide (TiO2) nanoparticles were employed into the polymer matrix to prepare SPEEK/GO/TiO2 hybrid membrane via solution-casting method for vanadium redox flow battery (VRFB). The morphology, permeability of vanadium ions and device performance of asprepared membrane were investigated and discussed. It was observed that with the barrier block effect by the filler, the VRFB single cell with the optimized SPEEK/GO/TiO2 hybrid membrane exhibited high coulombic efficiency (~99%), excellent energy efficiency (~85%) and vigorous cyclability (~97.2% capacity retention after 100 cycles). Moreover, the VRFB cell with this blend membrane showed lower vanadium ions permeability than Nafion 212 or pure SPEEK membranes. These results demonstrated that the comprehensive properties of hybrid membrane have been remarkably improved comparing to pristine SPEEK which suggested that the hybrid membrane was applicable for VRFB energy storage system.

scholarly journals Preparation of porous membrane with graphene oxide for vanadium redox flow battery

2020 ◽  
Vol 808 ◽  
pp. 012012
Author(s):  
Noor Fatina Emelin Nor Fadzil ◽  
Ebrahim Abouzari-Lotf ◽  
Saidatul Sophia Md Sha’rani ◽  
Teo Ming Ting ◽  
Nurfatehah Wahyuny Che Jusoh ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Porous Membrane ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Vanadium Redox

scholarly journals Effect of Fe(III) on the positive electrolyte for vanadium redox flow battery

2019 ◽  
Vol 6 (1) ◽  
pp. 181309 ◽  
Author(s):  
Muqing Ding ◽  
Tao Liu ◽  
Yimin Zhang ◽  
Zhenlei Cai ◽  
Yadong Yang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Electrochemical Behaviour ◽  
Vanadium Redox Flow Battery ◽  
Collision Probability ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Transfer Resistance ◽  
Practical Guidance ◽  
Vanadium Redox ◽  
Vanadium Ions

It is important to study the effect of Fe(III) on the positive electrolyte, in order to provide some practical guidance for the preparation and use of vanadium electrolyte. The effect of Fe(III) on the thermal stability and electrochemical behaviour of the positive electrolyte for the vanadium redox flow battery (VRFB) was investigated. When the Fe(III) concentration was above 0.0196 mol l −1 , the thermal stability of V(V) electrolyte was impaired, the diffusion coefficient of V(IV) species decreased from (2.06–3.33) × 10 −6 cm 2 s −1 to (1.78–2.88) × 10 −6 cm 2 s −1 , and the positive electrolyte exhibited a higher electrolyte resistance and a charge transfer resistance. Furthermore, Fe(III) could result in the side reaction and capacity fading, which would have a detrimental effect on battery application. With the increase of Fe(III), the collision probability of vanadium ions with Fe(III) and the competition with the redox reaction was aggravated, which would interfere with the electrode reaction, the diffusion of vanadium ions and the performance of VRFB. Therefore, this study provides some practical guidance that it is best to bring the impurity of Fe(III) below 0.0196 mol l −1 during the preparation and use of vanadium electrolyte.

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