Single‐Layer‐Particle Electrode Design for Practical Fast‐Charging Lithium‐Ion Batteries

Single‐Layer‐Particle Electrode Design for Practical Fast‐Charging Lithium‐Ion Batteries

Advanced Materials

10.1002/adma.202202892

http://dx.doi.org/10.1002/adma.202202892

Shuibin Tu, Ziheng Lu, Mengting Zheng, Zihe Chen, Xiancheng Wang, Zhao Cai, Chaoji Chen, Li Wang, Chenhui Li, Zhi Wei Seh, Shanqing Zhang, Jun Lu, Yongming Sun

Mechanical Engineering, General Materials Science, Mechanics of Materials

31 May 2022

Tu, S., Lu, Z., Zheng, M., Chen, Z., Wang, X., Cai, Z., Chen, C., Wang, L., Li, C., Seh, Z. W., Zhang, S., Lu, J., & Sun, Y. (2022). Single‐Layer‐Particle Electrode Design for Practical Fast‐Charging Lithium‐Ion Batteries. Advanced Materials, 2202892. Portico. https://doi.org/10.1002/adma.202202892

Efforts to enable fast charging and high energy density lithium-ion batteries (LIBs) are hampered by the trade-off nature of the traditional electrode design: increasing the areal capacity usually comes with sacrificing the fast charge transfer. Here a single-layer chunky particle electrode design is reported, where red-phosphorus active material is embedded in nanochannels of vertically aligned graphene (red-P/VAG) assemblies. Such an electrode design addresses the sluggish charge transfer stemming from the high tortuosity and inner particle/electrode resistance of traditional electrode architectures consisting of randomly stacked active particles. The vertical ion-transport nanochannels and electron-transfer conductive nanowalls of graphene confine the direction of charge transfer to minimize the transfer distance, and the incomplete filling of nanochannels in the red-P/VAG composite buffers volume change locally, thus avoiding the variation of electrodes thickness during cycling. The single-layer chunky particle electrode displays a high areal capacity (5.6 mAh cm−2), which is the highest among the reported fast-charging battery chemistries. Paired with a high-loading LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode, a pouch cell shows stable cycling with high energy and power densities. Such a single-layer chunky particle electrode design can be extended to other advanced battery systems and boost the development of LIBs with fast-charging capability and high energy density.

Publisher Copyright

This research / project is supported by the National Research Foundation - NRF Fellowship
Grant Reference no. : NRF-NRFF2017-04

This research is supported by core funding from: SERC
Grant Reference no. : NA

This work is financially supported by the Natural Science Foundation of China (Grant No. 520721137) and the Innovation Fund of Wuhan National Laboratory for Optoelectronics of Huazhong University of Science and Technology.

This is the peer reviewed version of the following article: Tu, S., Lu, Z., Zheng, M., Chen, Z., Wang, X., Cai, Z., Chen, C., Wang, L., Li, C., Seh, Z. W., Zhang, S., Lu, J., & Sun, Y. (2022). Single‐Layer‐Particle Electrode Design for Practical Fast‐Charging Lithium‐Ion Batteries. Advanced Materials, 2202892. Portico. https://doi.org/10.1002/adma.202202892 , which has been published in final form at doi.org/10.1002/adma.202202892. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited."

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