• 文献标题:   Mosaic Nanocrystalline Graphene Skin Empowers Highly Reversible Zn Metal Anodes
  • 文献类型:   Article
  • 作  者:   YANG XZ, LV JZ, CHENG C, SHI ZX, PENG J, CHEN ZY, LIAN XY, LI WP, ZOU YH, ZHAO Y, RUMMELI MH, DOU SX, SUN JY
  • 作者关键词:   artificial interphase layer, highly reversible, mosaic nanocrystalline graphene skin, orientational deposition, zn anode, zn 002 plane
  • 出版物名称:   ADVANCED SCIENCE
  • ISSN:  
  • 通讯作者地址:  
  • 被引频次:   3
  • DOI:   10.1002/advs.202206077 EA DEC 2022
  • 出版年:   2023

▎ 摘  要

Constructing a conductive carbon-based artificial interphase layer (AIL) to inhibit dendritic formation and side reaction plays a pivotal role in achieving longevous Zn anodes. Distinct from the previously reported carbonaceous overlayers with singular dopants and thick foreign coatings, a new type of N/O co-doped carbon skin with ultrathin feature (i.e., 20 nm thickness) is developed via the direct chemical vapor deposition growth over Zn foil. Throughout fine-tuning the growth conditions, mosaic nanocrystalline graphene can be obtained, which is proven crucial to enable the orientational deposition along Zn (002), thereby inducing a planar Zn texture. Moreover, the abundant heteroatoms help reduce the solvation energy and accelerate the reaction kinetics. As a result, dendrite growth, hydrogen evolution, and side reactions are concurrently mitigated. Symmetric cell harvests durable electrochemical cycling of 3040 h at 1.0 mA cm(-2)/1.0 mAh cm(-2) and 136 h at 30.0 mA cm(-2)/30.0 mAh cm(-2). Assembled full battery further realizes elongated lifespans under stringent conditions of fast charging, bending operation, and low N/P ratio. This strategy opens up a new avenue for the in situ construction of conductive AIL toward pragmatic Zn anode.