Sulfonated Poly(Ether Ether Ketone)/Graphene composite membrane for vanadium redox flow battery

Dai, Wenjing; Yu, Lihong; Li, Zhaohua; Yan, Jia; Liu, Le; Xi, Jingyu; Qiu, Xinping

doi:10.1016/j.electacta.2014.03.156

Cited by 126 publications

(60 citation statements)

References 42 publications

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“…All of these reports show promising electrochemical performance for graphene-supported carbon electrodes, specifically in terms of high peak current density, reduced overpotential and decreased charge-transfer resistance. Additionally, GO 96 and commercial graphene 97 have recently been tested as additives in VRFB ion-exchange membranes, with the aim of reducing the vanadium permeation and preventing ionic cross-mixing. The results achieved so far seem promising when compared with those obtained with bare membranes.…”

Section: Developing Applications Of Graphenementioning

confidence: 99%

The role of graphene for electrochemical energy storage

et al. 2014

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Since its first isolation in 2004, graphene has become one of the hottest topics in the field of materials science, and its highly appealing properties have led to a plethora of scientific papers. Among the many affected areas of materials science, this 'graphene fever' has influenced particularly the world of electrochemical energy-storage devices. Despite widespread enthusiasm, it is not yet clear whether graphene could really lead to progress in the field. Here we discuss the most recent applications of graphene - both as an active material and as an inactive component - from lithium-ion batteries and electrochemical capacitors to emerging technologies such as metal-air and magnesium-ion batteries. By critically analysing state-of-the-art technologies, we aim to address the benefits and issues of graphene-based materials, as well as outline the most promising results and applications so far.

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Section: Developing Applications Of Graphenementioning

confidence: 99%

The role of graphene for electrochemical energy storage

et al. 2014

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“…Open circuit voltages (OCVs) [27] of the VRSBs with SPI or Nafion 117 membrane were monitored and results are presented in Table 2 Proton conductivity, VO 2+ permeability and proton selectivity of SPI and Nafion 117 membranes.…”

Section: Open Circuit Voltage Evaluationmentioning

confidence: 99%

Sulfonated polyimide membranes with different non-sulfonated diamines for vanadium redox battery applications

Zhang

et al. 2014

Electrochimica Acta

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“…25,26 The degree of sulfonation (DS) of the SPEEK membrane used in this work is 0.70. 25,26 The degree of sulfonation (DS) of the SPEEK membrane used in this work is 0.70.…”

Section: Membrane Preparationmentioning

confidence: 99%

“…In particular, the vanadium redox ow battery (VRFB) has been considered as a promising technology for large-scale energy storage in the future due to its salient advantages such as long lifespan, fast response time and exible design. 20-23 Some modication methods, such as polymer blend, 24 organic-inorganic hybrid, [25][26][27] and inert porous substrate pore-lling, 27,28 can signicantly improve the mechanical strength and chemical stability of the SPEEK membrane, making it more suitable to apply in long-life VRFB system. At present, the most widespread adopted IEMs in commercialized VRFB are Naon series membranes (Dupont) due to its high chemical stability and proton conductivity.…”

Section: Introductionmentioning

confidence: 99%

Polydopamine coated SPEEK membrane for a vanadium redox flow battery

Dai

2015

RSC Adv.

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In this work, sulfonated poly(ether ether ketone) (SPEEK) membranes have been first modified by a polydopamine (PDA) coating and then investigated as an ion exchange membrane for a vanadium redox flow battery (VRFB). The SEM results showed that the PDA film was successfully coated on the surface of the SPEEK membrane. The PDA film can serve as a blocking layer to protect the substrate SPEEK membrane from being corroded by the highly oxidative vanadium electrolyte. The obtained PDA coated SPEEK membranes showed much lower vanadium ion permeability, accompanied by higher mechanical strength and thermal stability than the pristine SPEEK membrane. Consequently, the VRFB with the optimal PDA/SPEEK membrane exhibited much higher coulombic efficiency and better discharge capacity retention than the pristine SPEEK membrane. This indicates that the PDA coated SPEEK membranes are of significant interest for VRFB applications.

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Sulfonated Poly(Ether Ether Ketone)/Graphene composite membrane for vanadium redox flow battery

Cited by 126 publications

References 42 publications

The role of graphene for electrochemical energy storage

The role of graphene for electrochemical energy storage

Sulfonated polyimide membranes with different non-sulfonated diamines for vanadium redox battery applications

Polydopamine coated SPEEK membrane for a vanadium redox flow battery

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