Advanced Functional Materials
Advanced Functional Materials
5 years ago

In Situ Construction of 3D Interconnected FeS@Fe3C@Graphitic Carbon Networks for High-Performance Sodium-Ion Batteries

In Situ Construction of 3D Interconnected FeS@Fe3C@Graphitic Carbon Networks for High-Performance Sodium-Ion Batteries
Qinghong Wang, Can Guo, Wenchao Zhang, Zaiping Guo, Chao Wang, Yajie Liu
Iron sulfides have been attracting great attention as anode materials for high-performance rechargeable sodium-ion batteries due to their high theoretical capacity and low cost. In practice, however, they deliver unsatisfactory performance because of their intrinsically low conductivity and volume expansion during charge–discharge processes. Here, a facile in situ synthesis of a 3D interconnected FeS@Fe3C@graphitic carbon (FeS@Fe3C@GC) composite via chemical vapor deposition (CVD) followed by a sulfuration strategy is developed. The construction of the double-layered Fe3C/GC shell and the integral 3D GC network benefits from the catalytic effect of iron (or iron oxides) during the CVD process. The unique nanostructure offers fast electron/Na ion transport pathways and exhibits outstanding structural stability, ensuring fast kinetics and long cycle life of the FeS@Fe3C@GC electrodes for sodium storage. A similar process can be applied for the fabrication of various metal oxide/carbon and metal sulfide/carbon electrode materials for high-performance lithium/sodium-ion batteries. 3D interconnected FeS@Fe3C@graphitic carbon networks are constructed via a chemical vapor deposition method followed by a sulfuration process. The unique nanostructure endows the FeS@Fe3C@GC composite with high discharge capacity, good rate capability, and excellent cycling stability as anode for sodium-ion batteries. The strategy can be extended to the fabrication of other metal oxide/carbon and metal sulfide/carbon electrode materials.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/adfm.201703390

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.