3D Pathways Enabling Highly-Efficient Lithium Reservoir for Fast-Charging Batteries

Sang A. Han, Joo Hyeong Suh, Junyoung Kim, Sungmin Park, Won Ung Jeong, Yusuke Shimada, Jung Ho Kim, Min Sik Park, Shi Xue Dou

研究成果: ジャーナルへの寄稿学術誌査読


Enhancing the mobility of lithium-ions (Li+) through surface engineering is one of major challenges facing fast-charging lithium-ion batteries (LIBs). In case of demanding charging conditions, the use of a conventional artificial graphite (AG) anode leads to an increase in operating temperature and the formation of lithium dendrites on the anode surface. In this study, a biphasic zeolitic imidazolate framework (ZIF)-AG anode, designed strategically and coated with a mesoporous material, is verified to improve the pathways of Li+ and electrons under a high charging current density. In particular, the graphite surface is treated with a coating of a ZIF-8-derived carbon nanoparticles, which addresses sufficient surface porosity, enabling this material to serve as an electrolyte reservoir and facilitate Li+ intercalation. Moreover, the augmentation in specific surface area proves advantageous in reducing the overpotential for interfacial charge transfer reactions. In practical terms, employing a full-cell with the biphasic ZIF-AG anode results in a shorter charging time and improved cycling performance, demonstrating no evidence of Li plating during 300 cycles under 3.0 C-charging and 1.0 C-discharging. The research endeavors to contribute to the progress of anode materials by enhancing their charging capability, aligning with the increasing requirements of the electric vehicle applications.

出版ステータス印刷中 - 2024

!!!All Science Journal Classification (ASJC) codes

  • バイオテクノロジー
  • 化学一般
  • 生体材料
  • 材料科学一般
  • 工学(その他)


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