Recent development of membrane for vanadium redox flow battery applications: A review

Zeolites are crystalline microporous aluminosilicates with periodic arrangements of cages and well-defined channels, which make them very suitable for separating ions of different sizes, and thus also for use in battery applications. Herein, an ultra-thin ZSM-35 zeolite flake was introduced onto a poly(ether sulfone) based porous membrane. The pore size of the zeolite (ca. 0.5 nm) is intermediary between that of hydrated vanadium ions (>0.6 nm) and protons ( 99 % and an energy efficiency of >81 % at 200 mA cm−2, which is by far the highest value ever reported. These convincing results indicate that zeolite-coated membranes are promising in battery applications.

A Highly Ion-Selective Zeolite Flake Layer on Porous Membranes for Flow Battery Applications

A green SPEEK/lignin composite membrane with high ion selectivity for vanadium redox flow battery

A novel imidazolium-based amphoteric membrane for high-performance vanadium redox flow battery

Anion exchange membranes for aqueous acid-based redox flow batteries: Current status and challenges

For vanadium redox flow battery (VRB) applications, novel amphoteric ion exchange membranes (AIEMs) are prepared using sulfonated poly(ether ether ketone) (SPEEK) and quaternized poly(ether imide) (QAPEI) by a facile method. Different from other AIEMs synthesized by multiple steps, SPEEK/QAPEI (S/Q) membranes are directly prepared by blending. It offers a reduction in cost and leads to a high degree of micro-phase separated structure which could facilitate ion transport. The mechanical properties, thermal stability and oxidative stability of S/Q blend membranes are examined. In addition, increasing the content of QAPEI in the blend membranes could reduce water uptake and vanadium ion permeability effectively and improve the proton selectivity. In VRB single cell tests, the VRBs with S/Q blend membranes show higher coulombic efficiency and energy efficiency (EE) than pristine SPEEK and Nafion 115 membranes. Furthermore, the blend membranes present stable performance up to 100 cycles without significant decline in EE. All experimental results indicate that the S/Q blend membranes show promising prospects for VRB applications.

Novel amphoteric ion exchange membranes by blending sulfonated poly(ether ether ketone)/quaternized poly(ether imide) for vanadium redox flow battery applications

Ethylenediamine-functionalized graphene oxide incorporated acid-base ion exchange membranes for vanadium redox flow battery

A series of sulfonated poly(ether ether ketone) (SPEEK) and graphene oxide (GO) blend membranes were prepared with various mixing mass ratios. The water uptake, ion exchange capacity, proton conductivity, vanadium ion permeability, mechanical properties and chemical stability were measured. The blend membranes were characterized by FTIR, SEM and TG. The blend membranes exhibit higher water uptake and ion exchange capacity and lower vanadium ion permeability than Nafion115 membranes, the ion exchange capacity decreases with the increase of GO content. The VO2+ permeability of the blend membranes decreased, while mechanical properties increased with increasing GO content. Random embedding of GO in the membranes can block the transport of vanadium ions effectively, resulting in vanadium ion permeability of the blend membranes decreased obviously. In VRB single cell test, the blend membranes showed higher energy efficiency (EE) compared with Nafion115 membrane, the EE of S/GO-2 (GO, 2 wt%) blend membrane was 80% which increased by 9% compared to that with Nafion115. The S/GO blend membranes showed stable performance up to 100 cycles test. The experimental results indicate that the S/GO blend membranes show favorable development prospects for VRB.

Preparation of Sulfonated Poly(ether ether ketone)/Graphene Oxide Blend Membranes and Their Application in Vanadium Redox Flow Battery

Introduction: The metabolic balance of amines is closely related to human health. It remains a great challenge to analyze amines with high-throughput and high-coverage. Methods: Polythioester-functionalized magnetic nanoprobes (PMPs) have been prepared under mild conditions and applied in chemoselective capture of amides. With the introduction of polythioester, PMPs demonstrate remarkably increased capture efficiency, leading to the dramatically improved sensitivity of mass spectrometry detection. Results: The analysis method with PMPs treatment has been applied in rapid detection of more than 100 amines in lung adenocarcinoma cell lines, mouse organ tissues, and 103 human serum samples with high-throughput and high-coverage. Statistical analysis shows that arginine biosynthesis differed between lung adenocarcinoma cell lines. Discussion: Phenylalanine, tyrosine and tryptophan biosynthesis differed between tissues. The combination indicators demonstrate a great diagnostic accuracy for distinguishing between health and lung disease subjects as well as differentiating the patients with benign lung disease and lung cancer. With powerful capture ability, low-cost preparation, and convenient separation, the PMPs demonstrate promising application in the intensive study of metabolic pathways and early diagnosis of disease.high-throughput and high-coverage. Here, polythioester-functionalized magnetic nanoprobes (PMPs) have been prepared under mild conditions and applied in chemoselective capture of amides. With the introduction of polythioester, PMPs demonstrate remarkably increased capture efficiency, leading to the dramatically improved sensitivity of mass spectrometry detection. The analysis method with PMPs treatment has been applied in rapid detection of more than 100 amines in lung adenocarcinoma cell lines, mouse organ tissues, and 103 human serum samples with high-throughput and high-coverage. Statistical analysis shows that arginine biosynthesis differed between lung adenocarcinoma cell lines. Phenylalanine, tyrosine and tryptophan biosynthesis differed between tissues. The combination indicators demonstrate a great diagnostic accuracy for distinguishing between health and lung disease subjects as well as differentiating the patients with benign lung disease and lung cancer. With powerful capture ability, low-cost preparation, and convenient separation, the PMPs demonstrate promising application in the intensive study of metabolic pathways and early diagnosis of disease.

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Profiling of amines in biological samples using polythioester-functionalized magnetic nanoprobe

Playing a great role in human physiologies and pathologies, carbonyl metabolites are intimately associated with a variety of diseases, though the effective analysis method of them remains a challenge. A hydrazide-terminated polyurea-modified magnetic particle (HPMP) with versatile probes is developed to address this issue. The capture ability of HPMPs for carbonyl metabolite is more than 1200 µmol g-1 , which is increased by 4 orders of magnitude via the introduction of polyurea. With a broad linear range of over 4 orders of magnitude, remarkably improved sensitivity, and limit of detection at attomole quantities, HPMPs are applied in relative quantification of more than 1500 carbonyl metabolites in 113 human serum samples with high throughput and high coverage. The combined indicators of these metabolites demonstrates a great diagnostic accuracy for distinguishing between health and disease subjects as well as differentiating the patients with benign lung disease and lung cancer. Combining powerful capture ability, low-cost preparation, and convenient operation, the HPMPs demonstrate extensive application in biomarker discovery and the detailed study of the biochemical landscape.

Dan Li

Papers

Novel amphoteric ion exchange membranes by blending sulfonated poly(ether ether ketone)/quaternized poly(ether imide) for vanadium redox flow battery applications

Ethylenediamine-functionalized graphene oxide incorporated acid-base ion exchange membranes for vanadium redox flow battery

Preparation of Sulfonated Poly(ether ether ketone)/Graphene Oxide Blend Membranes and Their Application in Vanadium Redox Flow Battery

Profiling of amines in biological samples using polythioester-functionalized magnetic nanoprobe

Polyurea-Modified Magnetic Particles with Versatile Probes for Chemoselective Capture of Carbonyl Metabolites and Biomarker Discovery.