skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Two-Dimensional Holey Nanoarchitectures Created by Confined Self-Assembly of Nanoparticles via Block Copolymers: From Synthesis to Energy Storage Property

Abstract

Advances in liquid-phase exfoliation and surfactant-directed anisotropic growth of two-dimensional (2D) nanosheets have enabled their rapid development. However, it remains challenging to develop assembly strategies that lead to the construction of 2D nanomaterials with well-defined geometry and functional nanoarchitectures that are tailored to specific applications. Here we report a facile self-assembly method leading to the controlled synthesis of 2D transition metal oxide (TMO) nanosheets containing a high density of holes. We utilize graphene oxide sheets as a sacrificial template and Pluronic copolymers as surfactant. By using ZnFe 2O 4 (ZFO) nanoparticles as a model material, we demonstrate that by tuning the molecular weight of the Pluronic copolymers that we can incorporate the ZFO particles and tune the size of the holes in the sheets. The resulting 2D ZFO nanosheets offer synergistic characteristics including increased electrochemically active surface areas, shortened ion diffusion paths, and strong inherent mechanical properties, leading to enhanced lithium-ion storage properties. Post-cycling characterization confirms that the samples maintain structural integrity after electrochemical cycling. In conclusion, our findings demonstrate that this template-assisted self-assembly method is a useful bottom-up route for controlled synthesis of 2D nanoarchitectures, and these holey 2D nanoarchitectures are promising for improving the electrochemical performance of nextgenerationmore » lithium-ion batteries.« less

Authors:
 [1];  [1];  [2];  [3];  [3];  [1];  [3];  [3]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [1]
  1. The Univ. of Texas at Austin, Austin, TX (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)
  3. Stony Brook Univ., Stony Brook, NY (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Stony Brook Univ., Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Mesoscale Transport Properties (m2M)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1434773
Report Number(s):
BNL-203553-2018-JAAM
Journal ID: ISSN 1936-0851
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
ACS Nano
Additional Journal Information:
Journal Volume: 12; Journal Issue: 1; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 2D holey nanosheet architectures; confined self-assembly; Pluronic copolymers; lithium-ion batteries; energy storage

Citation Formats

Peng, Lele, Fang, Zhiwei, Li, Jing, Wang, Lei, Bruck, Andrea M., Zhu, Yue, Zhang, Yiman, Takeuchi, Kenneth J., Marschilok, Amy C., Stach, Eric A., Takeuchi, Esther S., and Yu, Guihua. Two-Dimensional Holey Nanoarchitectures Created by Confined Self-Assembly of Nanoparticles via Block Copolymers: From Synthesis to Energy Storage Property. United States: N. p., 2017. Web. doi:10.1021/acsnano.7b08186.
Peng, Lele, Fang, Zhiwei, Li, Jing, Wang, Lei, Bruck, Andrea M., Zhu, Yue, Zhang, Yiman, Takeuchi, Kenneth J., Marschilok, Amy C., Stach, Eric A., Takeuchi, Esther S., & Yu, Guihua. Two-Dimensional Holey Nanoarchitectures Created by Confined Self-Assembly of Nanoparticles via Block Copolymers: From Synthesis to Energy Storage Property. United States. doi:10.1021/acsnano.7b08186.
Peng, Lele, Fang, Zhiwei, Li, Jing, Wang, Lei, Bruck, Andrea M., Zhu, Yue, Zhang, Yiman, Takeuchi, Kenneth J., Marschilok, Amy C., Stach, Eric A., Takeuchi, Esther S., and Yu, Guihua. Wed . "Two-Dimensional Holey Nanoarchitectures Created by Confined Self-Assembly of Nanoparticles via Block Copolymers: From Synthesis to Energy Storage Property". United States. doi:10.1021/acsnano.7b08186. https://www.osti.gov/servlets/purl/1434773.
@article{osti_1434773,
title = {Two-Dimensional Holey Nanoarchitectures Created by Confined Self-Assembly of Nanoparticles via Block Copolymers: From Synthesis to Energy Storage Property},
author = {Peng, Lele and Fang, Zhiwei and Li, Jing and Wang, Lei and Bruck, Andrea M. and Zhu, Yue and Zhang, Yiman and Takeuchi, Kenneth J. and Marschilok, Amy C. and Stach, Eric A. and Takeuchi, Esther S. and Yu, Guihua},
abstractNote = {Advances in liquid-phase exfoliation and surfactant-directed anisotropic growth of two-dimensional (2D) nanosheets have enabled their rapid development. However, it remains challenging to develop assembly strategies that lead to the construction of 2D nanomaterials with well-defined geometry and functional nanoarchitectures that are tailored to specific applications. Here we report a facile self-assembly method leading to the controlled synthesis of 2D transition metal oxide (TMO) nanosheets containing a high density of holes. We utilize graphene oxide sheets as a sacrificial template and Pluronic copolymers as surfactant. By using ZnFe2O4 (ZFO) nanoparticles as a model material, we demonstrate that by tuning the molecular weight of the Pluronic copolymers that we can incorporate the ZFO particles and tune the size of the holes in the sheets. The resulting 2D ZFO nanosheets offer synergistic characteristics including increased electrochemically active surface areas, shortened ion diffusion paths, and strong inherent mechanical properties, leading to enhanced lithium-ion storage properties. Post-cycling characterization confirms that the samples maintain structural integrity after electrochemical cycling. In conclusion, our findings demonstrate that this template-assisted self-assembly method is a useful bottom-up route for controlled synthesis of 2D nanoarchitectures, and these holey 2D nanoarchitectures are promising for improving the electrochemical performance of nextgeneration lithium-ion batteries.},
doi = {10.1021/acsnano.7b08186},
journal = {ACS Nano},
number = 1,
volume = 12,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: (a) Schematic illustration of Pluronic copolymer induced self-assembly of TMO nanoparticles into holey 2D TMO nanosheets. (b-c) STEM images of the ZFO@GO precursors assembled by Pluronic-1100 in EG, the as-obtained holey ZFO nanosheets. Scale bars in b and c are 1 µm and 200 nm, respectively.

Save / Share:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.