EN

  • 附件【d1ta08697a.pdf】已下载

L.S. Wu, Y. Zhang, P. Shang, Y.F. Dong* and Z.-S. Wu,* 
Journal of Materials Chemistry A, 2021, 9, 27408-27414.
DOI: 10.1039/D1TA08697A [PDF]

发布时间:2021-11-16    栏目名称:2021

L.S. Wu, Y. Zhang, P. Shang, Y.F. Dong* and Z.-S. Wu,*

Journal of Materials Chemistry A, 2021, 9, 27408-27414.

DOI: 10.1039/D1TA08697A [PDF]

Zn metal with high chemical stability and low cost enables aqueous zinc ion batteries (ZIBs) to show promising applications in large-scale energy storage. However, the unlimited growth of Zn dendrites is the Achilles’ heel of ZIBs due to the nonuniform Zn nucleation and deposition. Herein, two-dimensional graphitic carbon nitride (g-C3N4) nanosheets are for the first time employed to modify glass fiber (GF) separators for highly-stable dendrite-free zinc anodes, in which g-C3N4layers act as a bifunctional Zn ion distributor to physically force the diffusion of Zn2+through the pores of hybrid separators and chemically guide Zn2+ion flux via coordination effects between Zn2+and abundant nitrogen species in g-C3N4nanosheets. Furthermore, the g-C3N4layers can efficiently avoid piercing through the hybrid separators and suppress self-discharging of ZIBs. As a result, the g-C3N4nanosheets modified GF (g-C3N4/GF) separators endow Zn//Zn symmetrical batteries with a long lifespan over 700 h at 2 mA cm−2and 2 mAh cm−2, superior to the counterpart with g-C3N4-free separators (64 h). In addition, the Zn//MnO2batteries with g-C3N4/GF separators deliver an enhanced capacity of 280 mAh g−1at 1 C after 400 cycles. Therefore, our work will pave a reliable strategy to design 2D nanosheets modified separators for high-performance ZIBs.

中国科学院大连化学物理研究所

大连市中山路457号

邮编:116023

版权所有 © 二维材料化学与能源应用研究组

首页 / 组长简介 / 研究方向 / 研究组成员 / 发表论文 / 新闻 / 联系我们