A coupled electro-chemo-mechanical model for all-solid-state thin film Li-ion batteries: The effects of bending on battery performances

Song, Xu Chun; Lü, Yongjun; Wang, Fenghui; Zhao, Xiang; Chen, Haosen

doi:10.1016/j.jpowsour.2020.227803

Cited by 45 publications

(15 citation statements)

References 62 publications

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“…The external pressure being used to improve ion pathways may cause fracture, and a SE with a lower stiffness can relax the stress in the composite electrode and exacerbate the anisotropic displacement of active particles. Song et al 23 developed a fully coupled electro-chemo-mechanical model for thin-film batteries and showed that the thin-film batteries can be bent toward the cathode to enhance the lithiation capacity and reduce the stress at the electrode/electrolyte interface. Wan and Ciucci 24 reported that the interfacial stress is also enhanced by the strong electric fields at the interface.…”

Section: Modeling For Composite Electrodes: Delamination and Fragment...mentioning

confidence: 99%

Review on Modeling for Chemo-mechanical Behavior at Interfaces of All-Solid-State Lithium-Ion Batteries and Beyond

2022

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The all-solid-state lithium-ion battery (ASSLIB) is a promising candidate for next-generation rechargeable batteries due to its high-energy density and potentially low risk of fire hazard compared with that of traditional lithium-ion batteries. However, the widespread application of ASSLIBs is unfortunately hindered by new critical issues arising from the all-solid-state structure, especially mechanical instability. First, employing solid electrolytes (SEs) in ASSLIBs is accompanied by a reduction of cell compliance. The SEs are normally much stiffer than liquid electrolytes, and they are no longer able to effectively accommodate the swelling and shrinkage of active particles during (de)lithiation. This may lead to the interfacial delamination and fragmentation of the active particles and electrolytes. In addition, although SEs are expected to mechanically suppress the growth of lithium dendrites at the lithium metal (Li)/SE interface, lithium dendrites are still observed frequently in battery cells employing SEs even with high stiffness. Hence, comprehending these phenomena and providing solutions to these issues are crucial to promote the application of ASSLIBs. A number of theoretical models have been developed to investigate the chemo-mechanical behavior of ASSLIBs in recent decades. This mini-review aims to comprehensively review them, focusing on the mechanically informed modeling on two main topics: (1) lithium dendrite initiation at the Li/SE interface and propagation through SEs and (2) delamination and fragmentation within a composite electrode due to (de)lithiation of an active particle. With this mini-review, we want to supply a more nuanced understanding for chemo-mechanical behavior at different interfaces in ASSLIBs from a modeling perspective.

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Section: Modeling For Composite Electrodes: Delamination and Fragment...mentioning

confidence: 99%

Review on Modeling for Chemo-mechanical Behavior at Interfaces of All-Solid-State Lithium-Ion Batteries and Beyond

2022

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“…Only in recent years, it has been gradually received more attentions. [ 336 , 337 , 338 ] The internal strain in each component of the ASTBs can be caused by at least two parameters, namely change in electrochemical state and temperature. Compared to electrochemical state, thermally induced strain is negligible.…”

Section: Challenges and Prospectsmentioning

confidence: 99%

All‐Solid‐State Thin Film μ‐Batteries for Microelectronics

Dai

et al. 2021

Advanced Science

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Continuous advances in microelectronics and micro/nanoelectromechanical systems enable the use of microsized energy storage devices, namely solid-state thin-film -batteries. Different from the current button batteries, the -battery can directly be integrated on microchips forming a very compact "system on chip" since no liquid electrolyte is used in the -battery. The all-solid-state battery (ASSB) that uses solid-state electrolyte has become a research trend because of its high safety and increased capacity. The solid-state thin-film -battery belongs to the family of ASSB but in a small format. However, a lot of scientific and technical issues and challenges are to be resolved before its real application, including the ionic conductivity of the solid-state electrolyte, the electrical conductivity of the electrode, integration technologies, electrochemical-induced strain, etc. To achieve this goal, understanding the processing of thin films and fundamentals of ion transfer in the solid-state electrolytes and hence in the -batteries becomes utmost important. This review therefore focuses on solid-state ionics and provides inside of ion transportation in the solid state and effects of chemistry on electrochemical behaviors and proposes key technology for processing of the -battery.

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“…Considering the battery modelling, various categories can be achieved to simulate the dynamic characteristics including electrochemical models [21], equivalent circuit models and data-driven models [22], while the computational effectiveness for further promotion is still of essential for cloud-control. Equivalent circuit models (ECMs) are one of the widely prevalent models applied in embedded BMS, and the effectiveness for online estimation delivers the promotion on future cloud-controlling.…”

Section: A Second-order Equivalent Circuit Modelmentioning

confidence: 99%

“…The development of information entropy is an essential foundation for distribution of determined region, and the probability of each partition can be defined as equation (21). Herein, the minimum and maximum of each region are determined from the fluctuating database, and the numbers of the regions are divided as artificial selection.…”

Section: B) Information Entropy Theorymentioning

confidence: 99%

A Comprehensive Evaluation on Variable Sampling Intervals of Power Battery System for Electric Vehicles

et al. 2020

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Considered to be the state-of-art solution for intelligent management of electric vehicles, cloud-control has been broadly investigated especially for parameterization and state estimation. Considering the operational cloud-database, the sampling intervals contribute to the precision and robustness of the battery management, and a balance between storage and performance is of crucial importance for real-time controlling. Unfortunately, the comprehensive performances on variable sampling intervals are doubtful for the development of cloud-control. Herein, the research of sampling intervals is carried out and the operational applications are simulated for validation including the precision, robustness and information content. 5 th -order spherical simplex-redial Kalman filter and particle swarm optimizationsimulated annealing methods are developed for researching the influences on precision of state of charge (SOC) estimation and parameterization under stable or dynamic conditions. Moreover, the information content of the desecrated database is evaluated based on the information entropy. The comparative results are carried out for separate characteristic, and the analysis exhibit the special performances for diverse sampling interval. The research confirms the differences on diverse intervals on operational applications, and the analysis might deliver effective guidance for future processing framework based on cloudcontrolling towards specific intentions.

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A coupled electro-chemo-mechanical model for all-solid-state thin film Li-ion batteries: The effects of bending on battery performances

Cited by 45 publications

References 62 publications

Review on Modeling for Chemo-mechanical Behavior at Interfaces of All-Solid-State Lithium-Ion Batteries and Beyond

Review on Modeling for Chemo-mechanical Behavior at Interfaces of All-Solid-State Lithium-Ion Batteries and Beyond

All‐Solid‐State Thin Film μ‐Batteries for Microelectronics

A Comprehensive Evaluation on Variable Sampling Intervals of Power Battery System for Electric Vehicles

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