Anomalous Li Storage Capability in Atomically Thin Two-Dimensional Sheets of Nonlayered MoO2
Type
ArticleAuthors
Xia, Chuan
Zhou, Yungang
Velusamy, Dhinesh
Farah, Abdiaziz A.
Li, Peng

Jiang, Qiu

Odeh, Ihab N.
Wang, Zhiguo

Zhang, Xixiang

Alshareef, Husam N.

KAUST Department
Functional Nanomaterials and Devices Research GroupMaterial Science and Engineering Program
Physical Science and Engineering (PSE) Division
SABIC - Corporate Research and Innovation Center (CRI) at KAUST
Date
2018-02-05Online Publication Date
2018-02-05Print Publication Date
2018-02-14Permanent link to this record
http://hdl.handle.net/10754/627238
Metadata
Show full item recordAbstract
Since the first exfoliation and identification of graphene in 2004, research on layered ultrathin two-dimensional (2D) nanomaterials has achieved remarkable progress. Realizing the special importance of 2D geometry, we demonstrate that the controlled synthesis of nonlayered nanomaterials in 2D geometry can yield some unique properties that otherwise cannot be achieved in these nonlayered systems. Herein, we report a systematic study involving theoretical and experimental approaches to evaluate the Li-ion storage capability in 2D atomic sheets of nonlayered molybdenum dioxide (MoO2). We develop a novel monomer-assisted reduction process to produce high quality 2D sheets of nonlayered MoO2. When used as lithium-ion battery (LIB) anodes, these ultrathin 2D-MoO2 electrodes demonstrate extraordinary reversible capacity, as high as 1516 mAh g–1 after 100 cycles at the current rate of 100 mA g–1 and 489 mAh g–1 after 1050 cycles at 1000 mA g–1. It is evident that these ultrathin 2D sheets did not follow the normal intercalation-cum-conversion mechanism when used as LIB anodes, which was observed for their bulk analogue. Our ex situ XPS and XRD studies reveal a Li-storage mechanism in these 2D-MoO2 sheets consisting of an intercalation reaction and the formation of metallic Li phase. In addition, the 2D-MoO2 based microsupercapacitors exhibit high areal capacitance (63.1 mF cm–2 at 0.1 mA cm–2), good rate performance (81% retention from 0.1 to 2 mA cm–2), and superior cycle stability (86% retention after 10,000 cycles). We believe that our work identifies a new pathway to make 2D nanostructures from nonlayered compounds, which results in an extremely enhanced energy storage capability.Citation
Xia C, Zhou Y, Velusamy DB, Farah AA, Li P, et al. (2018) Anomalous Li Storage Capability in Atomically Thin Two-Dimensional Sheets of Nonlayered MoO2. Nano Letters 18: 1506–1515. Available: http://dx.doi.org/10.1021/acs.nanolett.7b05298.Sponsors
Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST), and by Saudi Basic Industries Corporation (SABIC). The authors like to also thank Professor Bruce Dunn, UCLA, for useful discussions.Publisher
American Chemical Society (ACS)Journal
Nano LettersPubMed ID
29389132Additional Links
https://pubs.acs.org/doi/10.1021/acs.nanolett.7b05298ae974a485f413a2113503eed53cd6c53
10.1021/acs.nanolett.7b05298
Scopus Count
Related articles
- Confining Ultrafine MoO<sub>2</sub> in a Carbon Matrix Enables Hybrid Li Ion and Li Metal Storage.
- Authors: Yao Y, Chen Z, Yu R, Chen Q, Zhu J, Hong X, Zhou L, Wu J, Mai L
- Issue date: 2020 Sep 9
- One-dimensional architecture with reduced graphene oxide supporting ultrathin MoO<sub>2</sub> nanosheets as high performance anodes for lithium-ion batteries.
- Authors: Feng Y, Liu H
- Issue date: 2019 Aug 2
- Intercalation anode material for lithium ion battery based on molybdenum dioxide.
- Authors: Sen UK, Shaligram A, Mitra S
- Issue date: 2014 Aug 27
- Two-Dimensional Cr-Doped MoO<sub>2.5</sub>(OH)<sub>0.5</sub> Nanosheets: A Promising Anode Material for Lithium-Ion Batteries.
- Authors: Lu H, Yang C, Li C, Wang L, Wang H
- Issue date: 2019 Apr 10
- Construction of MoO<sub>2</sub> Quantum Dot-Graphene and MoS<sub>2</sub> Nanoparticle-Graphene Nanoarchitectures toward Ultrahigh Lithium Storage Capability.
- Authors: Wang C, Jiang J, Ruan Y, Ao X, Ostrikov K, Zhang W, Lu J, Li YY
- Issue date: 2017 Aug 30