Hot-Chemistry Structural Phase Transformation in Single-Crystal Chalcogenides for Long-Life Lithium Ion Batteries

Fathy M. Hassan, Qianqian Hu, Jing Fu, Rasim Batmaz, Jingde Li, Aiping Yu, Xingcheng Xiao, Zhongwei Chen

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Tuned chalcogenide single crystals rooted in sulfur-doped graphene were prepared by high-temperature solution chemistry. We present a facile route to synthesize a rod-on-sheet-like nanohybrid as an active anode material and demonstrate its superior performance in lithium ion batteries (LIBs). This nanohybrid contains a nanoassembly of one-dimensional (1D) single-crystalline, orthorhombic SnS onto two-dimensional (2D) sulfur-doped graphene. The 1D nanoscaled SnS with the rodlike single-crystalline structure possesses improved transport properties compared to its 2D hexagonal platelike SnS2. Furthermore, we blend this hybrid chalcogenide with biodegradable polymer composite using water as a solvent. Upon drying, the electrodes were subjected to heating in vacuum at 150 °C to induce polymer condensation via formation of carboxylate groups to produce a mechanically robust anode. The LIB using the as-developed anode material can deliver a high volumetric capacity of ?2350 mA h cm-3 and exhibit superior cycle stability over 1500 cycles as well as a high capacity retention of 85% at a 1 C rate. The excellent battery performance combined with the simplistic, scalable, and green chemistry approach renders this anode material as a very promising candidate for LIB applications.

Original languageEnglish
Pages (from-to)20603-20612
Number of pages10
JournalACS Applied Materials and Interfaces
Volume9
Issue number24
DOIs
Publication statusPublished - Jun 21 2017
Externally publishedYes

Keywords

  • DFT calculation
  • chalcogenides
  • high-temperature solution chemistry
  • lithium ion batteries
  • polymer condensation

ASJC Scopus subject areas

  • Materials Science(all)

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