Journal
SMALL METHODS
Volume 5, Issue 10, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smtd.202100518
Keywords
architecture engineering; charge transport kinetics; high energy density; lithium-based batteries; thick electrodes; transmission-line models
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Rechargeable lithium-ion batteries have become essential in our modern society, and developing thick electrodes faces challenges in terms of mechanical performance and reaction dynamics. Establishing a robust and rapid charge transport network is crucial for battery performance.
Rechargeable lithium-ion batteries have built much of our modern society. Developing high-loading and high-energy batteries have become an inevitable trend to satisfy the ever-growing demand of energy consumption. However, issues related to mechanical instability and electrochemical polarization have become more prominent accompanying the increase of electrode thickness. How to establish a robust and rapid charge transport network within the electrode architecture plays a vital role for the mechanical property and the reaction dynamics of thick electrodes. In this review, principles of charge transport mechanism and challenges of thick electrode development are elaborated. Next, recent progress on advanced electrode architecture design focused on structural engineering is summarized. Finally, a transmission line model is proposed as an effective tool to guide the engineering of thick electrodes.
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