Article

Progress on Failure Mechanism of Lithium Ion Battery Caused by Diffusion Induced Stress

Authors:
To read the full-text of this research, you can request a copy directly from the authors.

No full-text available

Request Full-text Paper PDF

To read the full-text of this research,
you can request a copy directly from the authors.

... Consequently, the adsorbent undergoes deprotonation. Simultaneously, the smaller radius of H + (32 pm) compared with Li + (70 pm) enables the anchoring of Li + by oxygen atoms (Yanan et al. 2020) because of the size selectivity of 2H12C4. Therefore, H + aggregates near the polar plate, while Li + is securely anchored within the imprinted cavity of the electrode, thus aiding Li + recovery. ...
Article
Full-text available
With the continuous development of global industry and the increasing demand for lithium resources, recycling valuable lithium from industrial solid waste is necessary for sustainable development and environmental friendliness. Herein, we employed ion imprinting and capacitive deionization to prepare a new electrode material for lithium-ion selective recovery. The material morphology and structure were characterized using scanning electron microscopy, Fourier-transform infrared spectroscopy, and other characterization methods, and the adsorption mechanism and water clusters were correlated using the density functional theory. The electrode material exhibited a maximum adsorption capacity of 36.94 mg/g at a Li⁺ concentration of 600 mg/L. The selective separation factors for Na⁺, K⁺, Mg²⁺, and Al³⁺ in complex solution environments were 2.07, 9.82, 1.80, and 8.45, respectively. After undergoing five regeneration cycles, the material retained 91.81% of the initial Li⁺ adsorption capacity. Meanwhile, the electrochemical adsorption capacity for Li⁺ was more than twice the corresponding conventional physical adsorption capacity because electrochemical adsorption provides the energy needed for deprotonation, enabling exposure of the cavities of the crown ether molecules to enrich the active sites. The proposed environment-friendly separation approach offers excellent selectivity for Li⁺ recovery and addresses the growing demand for Li⁺ resources.
... In the case of the NVN05POF/rGO electrode, a relatively lower/higher charge/discharge voltage plateaus, corresponding to an electrode polarization (ΔE) that defines as the differences between the anodic and cathodic peaks with a smaller value (NVN05POF/rGO: 0.18 V/0.18 V, NVPOF/rGO: 0.30 V/0.20 V), suggests the accelerated redox kinetics. Meanwhile, from the EIS analysis (Fig. 3(f), Fig. S9) [38], NVN05POF/rGO electrode displays a lower simulated charge transfer resistance (R ct : 242 Ω) than the undoped NVPOF/rGO electrode (R ct : 326 Ω), and the steeply inclined line (low-frequency region) with a slightly higher slope of NVN05POF/rGO electrode further demonstrates a favorable Na + diffusion in the lattice. The above results clearly indicate the facilitated charge transfer kinetics that could contribute to the enhanced rate performance. ...
Article
Na3V2(PO4)2O2F (NVPOF) has received considerable interest as a promising cathode material for sodium-ion batteries because of its high working voltage and good structural/thermal stability. However, the sluggish electrode reaction resulting from its low intrinsic electronic conductivity significantly restricts its electrochemical performance and thus its practical application. Herein, Nb-doped Na3V2−xNbx(PO4)2O2F/graphene (rGO) composites (x = 0, 0.05, 0.1) were prepared using a solvothermal method followed by calcination. Compared to the un-doped NVPOF/rGO, doping V-site with high-valence Nb element (Nb5+) (Na3V1.95Nb0.05(PO4)2O2F/rGO (NVN05POF/rGO)) can result in the generated V4+/V3+ mixed-valence, ensuring the lower bandgap and thus the increased intrinsic electronic conductivity. Besides, the expanded lattice space favors the Na+ migration. With the structure feature where NVN05POF particles are attached to the rGO sheets, the electrode reaction kinetics is further accelerated owing to the well-constructed electron conductive network. As a consequence, the as-prepared NVN05POF/rGO sample exhibits a high specific capacity of ∼72 mAh·g−1 at 10C (capacity retention of 65.2% (vs. 0.5C)) and excellent long-term cycling stability with the capacity fading rate of ∼0.099% per cycle in 500 cycles at 5C.
... Diffusion-induced stresses in the battery are caused by volume changes during lithiation and delithiation in the active materials, leading to various failure modes [2], including wrinkling of the inner jellyroll and fracture of the outer jellyroll, as shown in Figure 1 [3][4][5]. Battery failures caused by diffusion-induced stress are an active research topic [6]. ...
Article
Full-text available
During the charging and discharging process of a lithium-ion power battery, the intercalation and deintercalation of lithium-ion can cause volume change in the jellyroll and internal stress change in batteries as well, which may lead to battery failures and safety issues. A mathematical model based on a plane strain hypothesis was stablished to predict stresses in both the radial and hoop directions, with the hoop stress of each winding layer of the jellyroll obtained. Displacements of the steel case, the jellyroll, and the core of the battery during the charging and discharging processes were also analyzed, with the effect of lithium-ion concentration and the battery size discussed. The research results can explain well the wrinkling and fracture of the jellyroll.
... Key words: lithium-ion battery; cathode; stress field; multi-scale failure; life degradation 随着应用领域日益广泛, 锂离子电池的循环寿 命引起越来越多研究者的关注。电池寿命衰退既是 电化学过程, 也涉及到力学关键问题 [1][2] 。充放电过 程是 Li + 在正负极之间不断循环嵌入-脱出的过程, 在锂化-脱锂过程中伴随着摩尔体积的变化, 使得 极片中的 Li + 浓度分布不均匀, 导致材料发生往复 收缩与膨胀, 这种电化学-力学的耦合作用会形成 扩散诱导应力场, 而这种应力是导致电极材料机械 失效的直接原因 [3][4] 。此外, 在长时间电化学循环过 程中, 电极内部的扩散诱导应力也会影响电池的扩 散过程, 导致电池容量的持续损失。 扩散诱导应力最早是由 Prussin [5] 通过类比温度 梯度引起的热应力得到, 之后人们广泛研究了活性 颗粒和薄膜极片在充放电过程中扩散诱导应力的演 化过程。Huggins 和 Nix [6] 首先建立了一维模型来分 析活性颗粒的断裂机制。Christensen 和 Newman [7] 提出了一种耦合扩散-应力模型用于计算球形活性 颗粒的应力。在此基础上, Zhao 等 [8] ...
Article
Full-text available
The strain on the cell casing can serve as an indicator of the internal state of the cell. Monitoring strain during the charging and discharging processes aids in determining optimal charging and discharging operations, thereby maximizing the lifespan and performance of the battery. Herein, strain dynamic curves are obtained for lithium‐ion batteries at low, medium, and high charge and discharge rates by affixing strain gauges to individual cells. The investigation delves into parameters such as strain relaxation time, maximum strain, and residual strain at various charge rates and states of charge. The experimental findings reveal distinctive patterns, indicating that the strain curve during high‐rate charging resembles a second‐order function, exhibiting more pronounced fluctuations as the rate increases. This stands in stark contrast to the strain exponential decay observed during conventional medium and low‐rate charging. Notably, the strain residual resulting from high‐rate charging proves to be several times higher than that observed in low‐rate charging, hinting at potential differences in the dynamic distribution of lithium ions within batteries during high‐rate versus medium‐low‐rate charging modes.
Article
Full-text available
The rapid evolution of flexible electronic devices promises to revolutionize numerous fields by expanding the applications of smart devices. Nevertheless, despite this vast potential, the reliability of these innovative devices currently falls short, especially in light of demanding operation environment and the intrinsic challenges associated with their fabrication techniques. The heterogeneity in these processes and environments gives rise to unique failure modes throughout the devices’ lifespan. To significantly enhance the reliability of these devices and assure long-term performance, it is paramount to comprehend the underpinning failure mechanisms thoroughly, thereby enabling optimal design solutions. A myriad of investigative efforts have been dedicated to unravel these failure mechanisms, utilizing a spectrum of tools from analytical models, numerical methods, to advanced characterization methods. This review delves into the root causes of device failure, scrutinizing both the fabrication process and the operation environment. Next, We subsequently address the failure mechanisms across four commonly observed modes: strength failure, fatigue failure, interfacial failure, and electrical failure, followed by an overview of targeted characterization methods associated with each mechanism. Concluding with an outlook, we spotlight ongoing challenges and promising directions for future research in our pursuit of highly resilient flexible electronic devices.
Article
During charging and discharging, the insertion and extraction of lithium ions into and from the active materials can cause stress in a lithium ion battery (LIB). Excessive stress will lead to cracking, breaking and pulverization of active particles, which can result in multiple failure modes such as capacity decay and life reduction of the battery. In this research, an electrochemical and mechanical coupling model of a LIB with the NCM cathode and graphite anode is built at mesoscopic scale. The electrochemical and mechanical characteristics of the model during the charging process are analyzed. By changing the charging rates and design parameters of the anode electrode such as the particle radius, spacing coefficient, electrode thickness and diffusion coefficient, the effects of them on the lithium concentration, strain and stress in the anode particles during the charging process are investigated. The results show that lower charging rate, greater spacing coefficient, smaller electrode thickness and greater diffusion coefficient could help to decrease the stress in anode particles during charging.
Article
In this paper, the stress in positive particles of a Li‐ion battery during charging is obtained. The effects of the charging rates, charging modes, and structural parameters of the positive electrode on the stress are investigated. A mesoscopic electrochemical–mechanical coupling model for Li‐ion battery is built and verified. The SOC, strain, and stress distributions in positive particles during the constant current (CC)–constant voltage (CV) charging process are calculated by the model. The results show that the stress in positive particles quickly increases at the CC charging stage, especially when the state of charge (SOC) of the battery exceeds 80%. Then it slowly increases at the CV charging stage. Under the CC–CV charging mode, the charging rate has little effect on the stress in positive particles at the end of charging. But the distance between particles, the particle radius, and the electrode thickness can affect the stress at the end of charging. The conclusions obtained could provide references for the design and optimization of the charging strategy and mesoscopic microstructure of LIBs.
ResearchGate has not been able to resolve any references for this publication.