Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Small (Weinheim an der Bergstrasse, Germany), 2024-06, Vol.20 (26), p.e2310201-n/a

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2024

Quelle

Wiley Online Library

Beschreibungen/Notizen

• 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. A biphasic zeolitic imidazolate framework (ZIF)‐artificial graphite (AG) composite as an anode material for a fast‐charging lithium‐ion battery is proposed by directly growing ZIF nanoparticles on the artificial AG surface. The ZIF‐derived carbon nanoparticles act as promoters, facilitating Li+ transport through 3D amorphous carbon channels, thereby improving fast‐charging capabilities and long‐term cycling performance.