Species transport mechanisms governing capacity loss in vanadium flow batteries: Comparing Nafion® and sulfonated Radel membranes

2013 ◽  
Vol 98 ◽  
pp. 66-74 ◽  
Author(s):  
Ertan Agar ◽  
K.W. Knehr ◽  
D. Chen ◽  
M.A. Hickner ◽  
E.C. Kumbur
Keyword(s):  
Transport Mechanisms ◽  
Species Transport ◽  
Capacity Loss ◽  
Flow Batteries

scholarly journals Online Spectroscopic Study on the Positive and the Negative Electrolytes in Vanadium Redox Flow Batteries

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Le Liu ◽  
Jingyu Xi ◽  
Zenghua Wu ◽  
Wenguang Zhang ◽  
Haipeng Zhou ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Spectroscopic Analysis ◽  
State Of Charge ◽  
Online Detection ◽  
High Concentration ◽  
Chemical Reagents ◽  
Redox Flow Batteries ◽  
Capacity Loss ◽  
Flow Batteries ◽  
Vanadium Redox

Traditional spectroscopic analysis based on the Beer-Lambert law cannot analyze the analyte with high concentration and interference between different compositions, such as the electrolyte in vanadium redox flow batteries (VRBs). Here we propose a new method for online detection of such analytes. We demonstrate experimentally that, by comparing the transmittance spectrum of the analyte with the spectra in a preprepared database using our intensity-corrected correlation coefficient (ICCC) algorithm, parameters such as the state of charge (SOC) of both the positive and the negative electrolytes in the VRB can be online monitored. This method could monitor the level of the electrolytes imbalance in the VRB, which is useful for further rebalancing the electrolyte and restoring the capacity loss of the VRB. The method also has the potential to be used in the online detection of other chemical reactions, in which the chemical reagents have high concentration and interferences between different compositions.

Iron-vanadium redox flow batteries with polybenzimidazole membranes: High coulomb efficiency and low capacity loss

2019 ◽  
Vol 439 ◽  
pp. 227079 ◽  
Author(s):  
Wonmi Lee ◽  
Byeong Wan Kwon ◽  
Mina Jung ◽  
Dmytro Serhiichuk ◽  
Dirk Henkensmeier ◽  
...  
Keyword(s):  
Redox Flow Batteries ◽  
Capacity Loss ◽  
Flow Batteries ◽  
Coulomb Efficiency ◽  
Vanadium Redox

Physical Properties of Isolated Perfused Renal Tubular Basement Membranes

1971 ◽  
Vol 29 ◽  
pp. 390-391
Author(s):  
Jared Grantham ◽  
Larry Welling
Keyword(s):  
Basement Membrane ◽  
Basement Membranes ◽  
Transport Mechanisms ◽  
Permeability Characteristics ◽  
Peritubular Capillaries ◽  
Strategic Location ◽  
Tubular Lumen ◽  
Glomerular Filtrate ◽  
Urine Formation ◽  
Renal Tubular

In the course of urine formation in mammalian kidneys over 90% of the glomerular filtrate moves from the tubular lumen into the peritubular capillaries by both active and passive transport mechanisms. In all of the morphologically distinct segments of the renal tubule, e.g. proximal tubule, loop of Henle and distal nephron, the tubular absorbate passes through a basement membrane which rests against the basilar surface of the epithelial cells. The basement membrane is in a strategic location to affect the geometry of the tubules and to influence the movement of tubular absorbate into the renal interstitium. In the present studies we have determined directly some of the mechanical and permeability characteristics of tubular basement membranes.

Alveolobronchiolar transport mechanisms

1973 ◽  
Vol 131 (1) ◽  
pp. 109-114 ◽  
Author(s):  
G. M. Green
Keyword(s):  
Transport Mechanisms
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