A Top-Down Strategy toward SnSb In-Plane Nanoconfined 3D N-Doped Porous Graphene Composite Microspheres for High Performance Na-Ion Battery Anode

Jian Qin, Tianshuai Wang, Dongye Liu, Enzuo Liu, Naiqin Zhao, Chunsheng Shi, Fang He, Liying Ma, Chunnian He

Research output: Contribution to journalArticlepeer-review

211 Scopus citations

Abstract

Engineering of 3D graphene/metal composites with ultrasmall sized metal and robust metal–graphene interfacial interaction for energy storage application is still a challenge and rarely reported. In this work, a facile top-down strategy is developed for the preparation of SnSb-in-plane nanoconfined 3D N-doped porous graphene networks for sodium ion battery anodes, which are composed of several tens of interconnected empty N-graphene boxes in-plane firmly embedded with ultrasmall SnSb nanocrystals. The all-around encapsulation (plane-to-plane contact) architecture that provides a large interface between N-graphene and SnSb nanocrystal not only effectively enhances the electron conductivity and structural integrity of the overall electrode, but also offers excess interfacial sodium storage, thus leading to much enhanced high-rate sodium storage capacity and stability, which has been proven by both experimental results and first-principles simulations. Moreover, this top-down strategy can enable new paths to the low-cost and high-yield synthesis of 3D graphene/metal composites for applications in energy-related fields and beyond.

Original languageEnglish
Article number1704670
JournalAdvanced Materials
Volume30
Issue number9
DOIs
StatePublished - 1 Mar 2018
Externally publishedYes

Keywords

  • in situ synthesis
  • in-plane encapsulation
  • lithium/sodium ion batteries
  • SnSb alloy
  • space-confined catalysis

Fingerprint

Dive into the research topics of 'A Top-Down Strategy toward SnSb In-Plane Nanoconfined 3D N-Doped Porous Graphene Composite Microspheres for High Performance Na-Ion Battery Anode'. Together they form a unique fingerprint.

Cite this