• 文献标题:   Highly compressible, binderless and ultrathick holey graphene-based electrode architectures
  • 文献类型:   Article
  • 作  者:   LACEY SD, WALSH ED, HITZ E, DAI JQ, CONNELL JW, HU LB, LIN Y
  • 作者关键词:   holey graphene, mesoporous carbon, compressible graphene, scalable fabrication, ultrathick electrode architecture, lithiumoxygen battery
  • 出版物名称:   NANO ENERGY
  • ISSN:   2211-2855 EI 2211-3282
  • 通讯作者地址:   Univ Maryland
  • 被引频次:   15
  • DOI:   10.1016/j.nanoen.2016.11.005
  • 出版年:   2017

▎ 摘  要

Graphene is a renowned material due to its unique structural characteristics and chemical properties. By heating graphene powder in an open-ended tube furnace, a highly compressible carbon material, holey graphene (hG), can be created with controlled porosity and be further decorated with nanosized catalysts using a solvent-free procedure to impart functionality and electrocatalytic activity. For the first time, we demonstrate an additive-free, dry press method to compression mold hG-based materials into ultrathick, binderless and high mass loading architectures using a hydraulic press at room temperature. The compressibility and structure of the hG allows for fabrication of unique ultrathick electrode architectures (mixed, sandwich, and double-decker) using both hG and catalyst/hG nanohybrid materials. These high mass loading, mixed and stacked hG electrode architectures are the first of their kind and are successfully demonstrated as lithium-oxygen (Li-O-2) cathodes. The scalable, binderless, and solventless dry press method and novel additive-free electrode architectures presented here greatly advance both electrode fabrication options, and open up new electrode designs for potential energy storage advancements.