Electrode and Electrolyte Design Strategies Toward Fast‐Charging Lithium‐Ion Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 6, 2024

Abstract Fast‐charging lithium‐ion batteries are pivotal in overcoming the limitations of energy storage devices, particularly their density. There is a burgeoning interest boosting performance through enhanced fast‐charging capabilities. However, challenge lies developing that combine high rates, long cycle life, capacity, and safety. This review emphasizes importance fundamentals design principles fast charging, identifying transport ion/electron within electrodes/electrolytes' bulk phase at boundaries as crucial rate‐limiting steps for charging. Such ion tunnel regulation, interfacial modification, defect engineering multiphase systems, various optimization strategies improve stable exceptional electrochemical reaction kinetics electrodes. Constructing solid electrolyte interfaces adjusting solvation structures further enhance Li + diffusion electrolytes. The critically assesses impacts these strategies, suggesting future research directions insights advancing batteries. It anticipated this will inspire guide systematic evolution technologies.

Language: Английский

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Cracking Mechanism and Inhibition Strategies of Polycrystalline NCM Electrode Particles

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(42), P. 57074 - 57090

Published: Oct. 9, 2024

Developing a high-energy-density cathode material (LiNi1–x–yCoxMnyO2, NCM) for lithium-ion batteries is crucial to the electric vehicle and energy storage industries. However, continuous insertion/extraction of Li+ generates diffusion-induced stress, causing NCM particles crack or even pulverize, leading battery capacity loss limiting its wider commercial application. Current experimental studies are primarily postmortem examinations, it difficult capture particle cracking evolution. Simulation frequently ignore simplify anisotropic volume contraction, demonstrating an insufficient understanding mechanism polycrystalline particles, prevention strategies still need improvement. Therefore, we develop fracture phase-field model (AP-FPFM) that focuses on contraction primary precisely grain boundary distribution, coupling with diffusion, mechanical cracking. We employ AP-FPFM demonstrate behavior illustrate necessity importance understand Furthermore, explore effects average size, secondary core–shell structure modulation initiation propagation propose inhibit migrate This work provides theoretical support revealing supplying optimization suppress improve stability.

Language: Английский

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Cation migration of layered oxide cathodes for sodium-ion batteries: fundamental failure mechanisms and practical modulation strategies

Chemical Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

We comprehensively review the research advances in cation migration of sodium layered oxides, systematically revealing fundamental mechanisms and practical modulation strategies for irreversible leading to battery failure.

Language: Английский

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