Frontiers in Chemistry · 2018 · 69 citations · 32 references
EngineeringChemical EngineeringMaterials ScienceElectrochemical EngineeringEnergy MaterialsNanomaterialsBattery MaterialsCarbon NanotubesElectrochemical CellsElectrochemical Energy StorageMembrane MaterialsNanotubesCarbon-based Composite MembranesCoulombic EfficiencyFunctionalized Carbon NanomaterialsMembrane PerformanceMulti-walled Carbon NanotubesNanostructured MembranesRedox Flow BatteriesRedox Flow Battery Membranes
Proton exchange membranes is the key factor of vanadium redox flow battery (VRB) as their stability largely determine the lifetime of the VRB. In this study, a SPEEK/MWCNTs-OH composite membrane with ultrahigh stability is constructed by blending sulfonated poly(ether ether ketone) (SPEEK) with multi-walled carbon nanotubes toward VRB application. The carbon nanotubes disperse homogeneously in the SPEEK matrix with the assistance of hydroxyl group. The blended membrane exhibits 94.2% and 73.0% capacity retention after 100 and 500 cycles, respectively in a VRB single cell with coulombic efficiency of over 99.4% at 60 mA cm-2 indicating outstanding capability of reducing the permeability of vanadium ions and enhancing the transport of protons. The ultrahigh stability and low cost of the composite membrane make it a competent candidate for the next generation larger-scale vanadium redox flow battery.
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Recent Progress in Redox Flow Battery Research and Development
Wei Wang, Qingtao Luo, Bin Li et al. · Advanced Functional Materials · 2012 · 1.5K citations
The rechargeable revolution: A better battery
Richard Van Noorden · Nature · 2014 · 1K citations · Full text