5 years ago

Co3O4 Nanosheets with In-Plane Pores and Highly Active {112} Exposed Facets for High Performance Lithium Storage

Co3O4 Nanosheets with In-Plane Pores and Highly Active {112} Exposed Facets for High Performance Lithium Storage
Xianlong Zhou, Juncheng Hu, Tengfei Zhou, Johnny C. Ho, Renjie Wei
Recently, two-dimensional transition metal oxide nanomaterials have been extensively investigated as promising candidates for the lithium-ion battery anode materials due to their elastic volume change, efficient ion/electrical pathways, and additional interfacial lithium storage sites. Herein, we report a simple wet-chemical method followed by thermal treatment to synthesize Co3O4 nanosheets with the in-plane pores. The as-prepared nanosheets are found to selectively expose the highly active {112} facets as the dominant surfaces. When fabricated into the anode configuration, a specific capacity of 1717 mA h g–1 can be reliably retained after 100 cycles at a current density of 200 mA g–1. While increasing the current density to 1 A g–1 and prolonging the cycle life to 400 cycles, the nanosheets can still deliver a capacity of 1090 mA h g–1 with a Coulombic efficiency of 99.5%. This excellent electrochemical performance can be attributed to the unique morphological structures of our porous nanosheets for the shortened lithium ion diffusion pathway, alleviated volume expansion, and enhanced active sites, indicating the technological potency of the nanosheets for high-performance lithium storage.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b04799

DOI: 10.1021/acs.jpcc.7b04799

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.