ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces
5 years ago

Construction of MoO2 Quantum Dot–Graphene and MoS2 Nanoparticle–Graphene Nanoarchitectures toward Ultrahigh Lithium Storage Capability

Construction of MoO2 Quantum Dot–Graphene and MoS2 Nanoparticle–Graphene Nanoarchitectures toward Ultrahigh Lithium Storage Capability
Chundong Wang, Yang Yang Li, Wenjun Zhang, Jianjun Jiang, Jian Lu, Yunjun Ruan, Xiang Ao, Kostya Ostrikov
Herein, MoO2 quantum dots (QDs; <5 nm) are synthesized through a one-step solvothermal process. MoO2 QD-bonded graphene sheets (MoO2-QDs@RGO) are facilely produced and can be further converted through sulfidation into MoS2 nanoparticle-bonded graphene sheets (MoS2-NPs@RGO). The novel MoO2-QDs@RGO electrodes demonstrate exceptionally attractive lithium storage capability (e.g., 1257 mA h g–1 at 100 mA g–1, being close to the highest values ever reported for a MoO2-based lithium ion battery electrode), rate capability, and cycle stability. Moreover, the MoS2-NPs@RGO delivered a superior capacity (1497 mA h g–1 at 100 mA g–1) with outstanding rate retention and cycling stability. The superior lithium storage capabilities are ascribed to the synergetic effects of the high-surface-area graphene sheets, the well-dispersed MoS2 nanoparticles, and their strong bonding with each other, which effectively prevents aggregation of MoS2 while the composite architecture allows fast transport of electrons and ions.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b07100

DOI: 10.1021/acsami.7b07100

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.