论文标题
基于comsol的钛锰氧化还原流量电池的特性
Characteristics of a Titanium Manganese redox flow battery based on Comsol
论文作者
论文摘要
提出了锰氧化还原流量电池（TMRFB）的仿真模型和设计，以研究解离速率，电势，电流密度和电极电位的分布。 TMRFB是最有希望的新能源存储之一，因为在能源稀缺和环境污染的当前状况下，其具有高容量和环保特征。此外，由于其廉价的成本和高能量密度代替了所有昂贵的钒氧化还原电池，因此基于MN的流量电池正在越来越受欢迎。这项研究表明，Ti4+/ Ti3+和Mn3+/ Mn2+离子的表面解离速率在膜上较高，而在电解质流动速度较高的入口处则较低；此外，我们的工作表明，当电极的厚度从4.5 mm压缩到3 mm时，超电势会减小，而电流密度和电极电势会增加。 COMSOL多物理软件用于使用有限元方法来求解模型的方程。从解离速率中可以得出结论，在膜上需要较小的电位来减少氧化反应，并且具有优化的电解质流量电池性能可以提高。因此，电极压缩会提高电导率和电池性能。
A simulation model and design of Titanium Manganese Redox Flow Battery (TMRFB) is proposed to study the distribution of dissociation rate, overpotential, current density, and electrode potential. TMRFB is one of the most promising new energy storages because of its high capacity and eco-friendly characteristics in the current condition of energy scarcity and environmental pollution. Moreover, Mn-based flow batteries are gaining popularity due to their inexpensive cost and high energy density in lieu of all vanadium redox flow batteries which are expensive. This research shows that the surface dissociation rate of Ti4+/ Ti3+ and Mn3+/Mn2+ ions are higher at the membrane and lower at the inlet where the velocity of the electrolyte flow is higher; Furthermore, our work reveals that when the thickness of the electrode is compressed from 4.5 mm to 3 mm, overpotential reduces whereas current density and electrode potential increases. The COMSOL Multiphysics software is used to solve the model's equations using the finite element approach. From the dissociation rate it is concluded that less potential is required at the membrane for the oxidation reduction reaction and with optimized electrolyte flow rate battery performance can be improved. Thus, electrode compression increases conductivity and battery performance.
