2D titanium carbide and transition metal oxides hybrid electrodes for Li-ion storage

Meng Qiang Zhao, Michelle Torelli, Chang E. Ren, Michael Ghidiu, Zheng Ling, Babak Anasori, Michel W. Barsoum, Yury Gogotsi

Research output: Contribution to journalArticlepeer-review

290 Scopus citations

Abstract

The combination of nanomaterials with complementary properties in a well-designed architecture is an attractive strategy to develop multi-functional, high-performance materials for applications in energy conversion and storage, catalysis, electronic devices, and more. Herein, we propose three different methods: alternating filtration, spray coating, and in-situ wet chemistry synthesis, to achieve the hybridization of two-dimensional (2D) Ti3C2Tx MXene and transition metal oxides (TMOs), such as Co3O4 and NiCo2O4. The resulting flexible free-standing hybrid films were free of binders, conductive additives, or current collectors. When used directly as anodes for Li-ion batteries, these hybrid films successfully combined the metallic conductivity of Ti3C2Tx and high capacity of TMOs, showing excellent electrochemical performance for Li-ion storage. High reversible capacities over 1200 mA h g−1 were achieved by the MXene/TMO hybrid film electrodes fabricated by all three methods. All films also exhibited impressive long cycling stabilities and excellent rate performances. In particular, the spray-coated Ti3C2Tx/NiCo2O4 hybrid film electrode achieved high reversible capacities of 1330, and 650 and 350 mA h g−1 at 0.1, 5 and 10 C, respectively, along with no capacity decay over hundreds of cycles. This work demonstrates that the hybridization of MXenes, a large family of 2D transition metal carbides/nitrides, and TMOs has a significant potential for energy storage, and is promising for expansion into other applications.

Original languageEnglish (US)
Pages (from-to)603-613
Number of pages11
JournalNano Energy
Volume30
DOIs
StatePublished - Dec 1 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science
  • Electrical and Electronic Engineering

Keywords

  • Flexible film
  • Hybridization
  • Li-ion storage
  • MXene
  • Transition metal oxide

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