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Batteries, Fuel Cells and Hydrogen Energy
Published in Radian Belu, Energy Storage, Grid Integration, Energy Economics, and the Environment, 2019
Vanadium redox batteryflow battery (VRB) was pioneered at the University of New South Wales, Australia, and has shown potentials for long cycle life and energy efficiencies of over 80% in large installations. A vanadium redox battery is another type of a flow battery in which electrolytes in two loops are separated by a proton exchange membrane (PEM). The VRB uses compounds of the element vanadium in both electrolyte tanks. The electrolyte is prepared by dissolving of vanadium pentoxide (V2O5) in sulfuric acid (H2SO4). The electrolyte in the positive electrolyte loop contains (VO2)+ − (V5+) and (VO)2+ − (V4+) ions, the electrolyte in the negative electrolyte loop, V3+ and V2+ ions. Chemical reactions proceed on the carbon electrodes, while the reaction chemistry at the positive electrode is: () VO2++2H++e−↔VO2++H2O,withE0=+1.00V
Uncovering the effect of ion exchange membrane on capacity decay and efficiency for all-vanadium redox flow battery by modeling analysis
Published in International Journal of Green Energy, 2022
In this paper, a dynamic model of four kinds of vanadium in an all-vanadium redox battery utilizing different membranes is established based on the molar mass balance equation, to uncover the effect of the membranes on VFB capacity decay and efficiencies. On the one hand, under the cutoff voltages, the capacity decay can be significantly affected by the vanadium permeability of the membrane. However, the capacity decay can be to some extent alleviated by increasing the charge–discharge current. As a result, the VFB with NEPEM115 shows the smallest capacity decay due to its smallest vanadium ions permeability. On the other hand, under the five constant charge and discharge current densities, the efficiency of the battery when using the APS membrane is higher than that of other membrane, which can be attributed to its higher protonic conductivity. Thereby, this simulated model can guide us to choose the proper membrane for the VFB systems.
Optimal Size and Location of Battery Energy Storage Systems for Reducing the Wind Power Curtailments
Published in Electric Power Components and Systems, 2018
Guodong Xu, Haozhong Cheng, Sidun Fang, Zifeng Ma, Pingliang Zeng, Liangzhong Yao
The size and location of one BESS that comprises at least one basic module are required to be decided. The basic module information of the vanadium redox battery (VRB), which is chosen as the BESS, is presented in Table 2 [4], [26]. The rated capacity of the converter of BESS is set to 1.2 times its rated power. The ratio of the annual operation and maintenance cost is 5%, and the discount rate is 10%. Meanwhile, it is assumed that the minimum, initial, and maximum SOC of BESS are 0.2, 0.5, and 1, respectively.
A Novel Process for Manufacturing Vanadium Dioxide(VO2) as a resource of Vanadium Electrolyte from Vanadium Pentoxide(V2O5)
Published in Geosystem Engineering, 2022
Byung-Su Kim, Tae-Gong Ryu, Jihyuk Choi, Tae Jun Park, Hankwon Chang, JeongHyun Yoo, Chang-Youl Suh, Sung-Wook Cho, Kimin Roh
In general, a vanadium redox battery has the lower energy density than a lithium-ion battery but is well known for its low risk of explosion (Lourenssen et al., 2019; Parasuraman et al., 2013). Currently, the method for manufacturing a vanadium electrolyte for vanadium redox battery can be largely divided into a method of using vanadium pentoxide powder (V2O5) and vanadium sulfate powder (VOSO4) prepared from the vanadium pentoxide powder (V2O5; Li et al., 2011; Weber et al., 2018).