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DOE OSTI · 1895582

Gradient Design for High–Energy and High–Power Batteries

Wu, Jingyi·Ju, Zhengyu·Zhang, Xiao·Marschilok, Amy C.·Takeuchi, Kenneth J.·Wang, Huanlei·Takeuchi, Esther S.·Yu, Guihua
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Abstract

Charge transport is a key process that dominates battery performance, and the microstructures of the cathode, anode, and electrolyte play a central role in guiding ion and/or electron transport inside the battery. Rational design of key battery components with varying microstructure along the charge-transport direction to realize optimal local charge-transport dynamics can compensate for reaction polarization, which accelerates electrochemical reaction kinetics. Here, the principles of charge-transport mechanisms and their decisive role in battery performance are presented, followed by a discussion of the correlation between charge-transport regulation and battery microstructure design. The design strategies of the gradient cathodes, lithium-metal anodes, and solid-state electrolytes are summarized. Further, future directions and perspectives of gradient design are provided at the end to enable practically accessible high-energy and high-power-density batteries.

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25 ENERGY STORAGEbatteriesbatterycharge transportcharge-transportelectrochemical kineticsenergy storagegradientgradient design strategieskinetics

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Wu, Jingyi, Ju, Zhengyu, Zhang, Xiao, Marschilok, Amy C., Takeuchi, Kenneth J., Wang, Huanlei, Takeuchi, Esther S., Yu, Guihua. 2022-05-29. Gradient Design for High–Energy and High–Power Batteries. https://doi.org/10.1002/adma.202202780

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