An auxiliary electrode mediated membrane-free redox electrochemical cell for energy storage

2020 ◽  
Vol 4 (5) ◽  
pp. 2149-2152 ◽  
Author(s):  
Senthil Velan Venkatesan ◽  
Kunal Karan ◽  
Stephen R. Larter ◽  
Venkataraman Thangadurai

Membrane-free redox cell with no mass transfer between anode and cathode chambers.

Author(s):  
Senthil Velan Venkatesan ◽  
Kunal Karan ◽  
Stephen R. Larter ◽  
Venkataraman Thangadurai

Correction for ‘An auxiliary electrode mediated membrane-free redox electrochemical cell for energy storage’ by Senthil Velan Venkatesan et al., Sustainable Energy Fuels, 2020, 4, 2149–2152, DOI: 10.1039/c9se00734b.


2020 ◽  
Vol 24 (5 Part B) ◽  
pp. 3185-3193
Author(s):  
Sina Dang ◽  
Hongjun Xue ◽  
Xiaoyan Zhang ◽  
Chengwen Zhong

To strengthen the heat and mass transfer capacity and improve the temperature regulation rate, potential storage is taken as the research object in this research to study the heat energy storage of the battery in the low temperature environment. Lattice Boltzmann method is adopted to study the heat energy storage influence mechanism of the temperature regulation system of the low temperature phase-change materials. In addition, the influence of different physical parameters (thermal conductivity and latent heat of phase change) on the thermal insulation of the system in the process of temperature control is revealed. The results show that the mechanism of heat and mass transfer in the process of heat storage and temperature control is related to the different physical properties of phase change materials. The decrease of thermal conductivity and the increase of latent heat of phase change materials will greatly increase the effect of heat energy storage. Therefore, under the action of phase change latent heat, phase change material can effectively extend the holding time of the battery in the low temperature environment.


2020 ◽  
pp. 1-10
Author(s):  
G. M. Jagannadha Raju ◽  
G. V. S. Sarma ◽  
K. V. Ramesh ◽  
C. Bhaskara Sarma

2011 ◽  
Vol 198 (10) ◽  
pp. 1218-1232 ◽  
Author(s):  
G. M. Jagannadha Raju ◽  
K. V. Ramesh ◽  
G. V. S. Sarma ◽  
C. Bhaskara Sarma

1984 ◽  
Vol 21 (3) ◽  
pp. 475-488 ◽  
Author(s):  
Carl D. Palmer ◽  
John A. Cherry

The geochemical mass transfer model WATEGM-SE is used to illustrate by example potential chemical reactions that can occur at a hypothetical low-temperature thermal energy aquifer storage facility. Important processes that control the chemistry include heating and cooling of the water, equilibration of the pumped water with the atmospheric partial pressure of CO2 and O2, and the mixing of the injection water with the native groundwater during the injection, storage, and recovery cycles. For the given example, 0.3 mmol/L of calcite would be precipitated under closed system pumping and heating from 10 to 50 °C while a total of 1.9 mmol/L would be precipitated under the open condition. If this calcite were to form scale within the facility's piping then considerable lengths can be affected depending on the pumping rate. Alternatively, if the precipitate is kept in suspension it will be transported to the injection well and will be filtered out by the aquifer itself. This filtration can result in significant decreases in porosity and hence permeability in the immediate vicinity of the injection well. Mixing of the injection water with the native groundwater changes the water chemistry and can result in mineral supersaturation or undersaturation depending on the composition of these waters and the proportions in which they are mixed. The effect of mixing on the given example is undersaturation with respect to calcite and supersaturation with respect to amorphous Fe(OH)3. The pe values in the simulations of mixtures of an oxidizing injection water and a reducing native groundwater yielded some results with significantly higher pe values than the oxidizing injection water. The use of equilibrium geochemical mass transfer models tempered by an understanding of their limitations may prove to be an effective tool for evaluation of potential chemical reactions associated with low-temperature aquifer thermal energy storage facilities. Key words: thermal energy storage, geochemical equilibria, groundwater, simulation, scale formation, mixing.


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