摘要
为了实现固态电解质电池界面上枝晶非线性生长仿真,探索影响枝晶生长稳定性的关键变量,在MOOSE(Multiphysics Object-Oriented Simulation Environment)仿真平台上模型构建了一种固态电解质电池,将电极与电解质相顺序参数分别设为1与0,使用相场模型对固态电解质电池界面上枝晶生长情况进行了仿真计算。模型考虑了不同过电位与界面各向异性下枝晶生长情况。指出了界面各向异性参数低,数值为0.035时,枝晶生长快但是其余晶核会被抑制。当固态电解质电池过电位较低,数值为-0.4 V时,产生的晶核少而大,所有枝晶的生长都被显著抑制。提出了在实际工况中,应控制固态电解质电池的过电位在一个较小的水平,在制造过程中应提高电解质与电极间的界面质量,从而延缓枝晶生长速度。
In order to realize the simulation of dendrite nonlinear growth on the interface of solid-state electrolyte battery and explore the key variables affecting the stability of dendrite growth,a solid-state electrolyte battery was modeled on the moose(multi-physics object oriented simulation environment)simulation platform.The electrode and electrolyte phase sequence parameters were set to 1 and 0 respectively.The dendrite growth on the interface of solid-state electrolyte battery was simulated by using the phase field model.The dendrite growth under different over-potential and interface anisotropy is considered in the model.It is pointed out that when the interface anisotropy parameter is low,while value is 0.035,the dendrite growth is fast,but the residual nuclei will be suppressed.When the over potential of solid electrolyte battery is low,while value is-0.4 V,the number of crystal nuclei is small and large,and the growth of all dendrites is significantly inhibited.It is proposed that the over potential of solid electrolyte battery should be controlled at a small level in the actual working condition,and the interface quality between electrolyte and electrode should be improved in the manufacturing process,so as to delay the dendrite growth rate.
作者
洪清和
耿晓彬
徐波
李顶根
HONG Qing-he;GENG Xiao-bin;XU Bo;LI Ding-gen(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《武汉理工大学学报》
CAS
2023年第2期81-87,95,共8页
Journal of Wuhan University of Technology
基金
国家重点研发计划项目资助(2018YFB0104104)。
关键词
固体电解质电池
枝晶
仿真计算
solid electrolyte battery
dendrite
simulation calculation
