A5065847267- Advanced Battery Technologies Research
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Semiconductor materials and interfaces
- Radiation Effects in Electronics
- Fuel Cells and Related Materials
- Advanced battery technologies research
University of North Carolina at Charlotte
2019-2023
Beihang University
2018-2019
Outlines of the multiphysics behaviors upon penetration and comparisons experiment simulation.
Abstract Inevitable safety issues have pushed battery engineers to become more conservative in system design; however, battery‐involved accidents still frequently are reported headlines. Identifying, understanding, and predicting risks priorities further accelerate technology industry development. However, diverse loading scenarios, significantly varied stress‐induced short circuit mechanisms, highly coupled mechanical–electrochemical behaviors remained grand challenges. Herein, the risk is...
Abstract Dendrite growth and crack propagation are two major hurdles on the road towards large‐scale commercialization of lithium metal all‐solid‐state batteries (ASSBs). Due to high multiphysics coupled nature underlying dendrite mechanism, understanding it has been difficult. Herein, for first time, an electrochemical‐mechanical model is established that directly couples from a physics‐based perspective at cell level. Results reveal overpotential‐driven stress propels penetrate through...
This study identifies the minor and major short circuits of cells upon various mechanical abusive loadings establishes internal circuit criteria for typical formats batteries.
With the increasing number of electric vehicles, inevitable crash accidents, vibration and foreign objective penetration potentially generate catastrophic consequences such as fire or explosion. Unlike traditional engineering materials structures, LIBs exhibit multiphysical behaviors including mechanical deformation/failure, thermal conduction, series electrochemical chemical reactions, upon abusive loading. Therefore, developing computational frameworks capable describing cylindrical...
Abstract Dendrite growth is one of the leading factors that cause cycling deterioration for all‐solid‐state batteries (ASSBs). However, using a single dominant material to form solid electrolyte has encountered several setbacks due intrinsically competing in mechanics and electrochemistry. Inspired by “brick‐and‐mortar” structure, strategy embedding heterogeneous blocks (HBs) within (SE) proposed mitigate suppress dendrite growth‐induced internal short circuits (ISCs). A phase‐field‐based...
Lithium-ion battery safety and durability by nature are dependent on electrochemical mechanical coupling. Interdisciplinary efforts required to understand quantify coupling behaviors. Here we design conduct mechanically constrained charge discharge characterizations with supported multiphysics modeling unravel the mechanisms of solid-liquid electrode-electrolyte solid-solid active materials in lithium-ion batteries. We demonstrate that a cell under constraint exhibits higher voltage during...
Abstract As an emerging type of high-density lithium-ion batteries (LIBs) for electric vehicles, 21700 cylindrical may suffer inevitable mechanical vibrations, curbstone impact/penetration, and crash accidents, which probably induce internal short circuit (ISC), thermal runaway, more catastrophic events such as fire/explosion. Therefore, exploring the behavior quantitively serves a cornerstone better understanding safety behaviors batteries. This paper focuses on characterization tensile...
Dynamic behaviours of the core-shell structured (CSS) Si nanoparticles during electrochemical cycling were modelled. A core-shell-structured model that contained wrapped with amorphous carbon (a-C) was established. The system charged and discharged under constant voltage a dynamic loading applied on surface particle. volume change associated stress simulated by without external compared previous work done other researchers matched well. Different imposing moments introduced into this to see...
With the merits of high energy density from lithium metal electrode and safety performance improved by inorganic electrolyte, all-solid-state batteries (ASSBs) are considered promising candidates for future lithium-ion batteries. However, dendrite growth induced battery short-circuit (SC) failure obstacles on commercialization road ASSBs. To unravel mechanism, electrochemical-mechanical coupled multiphysics model is developed cell level, based which mitigation strategy further proposed...