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Title: Electrohydrodynamic-assisted Assembly of Hierarchically Structured, 3D Crumpled Nanostructures for Efficient Solar Conversions

The tantalizing prospect of harnessing the unique properties of graphene crumpled nanostructures continues to fuel tremendous interest in energy storage and harvesting applications. However, the paper ball-like, hard texture, and closed-sphere morphology of current 3D graphitic nanostructure production not only constricts the conductive pathways but also limits the accessible surface area. Here, we report new insights into electrohydrodynamically-generated droplets as colloidal nanoreactors in that the stimuli-responsive nature of reduced graphene oxide can lead to the formation of crumpled nanostructures with a combination of open structures and doubly curved, saddle-shaped edges. In particular, the crumpled nanostructures dynamically adapt to non-spherical, polyhedral shapes under continuous deposition, ultimately assembling into foam-like microstructures with a highly accessible surface area and spatially interconnected transport pathways. The implementation of such crumpled nanostructures as three-dimensional rear contacts for solar conversion applications realize benefits of a high aspect ratio, electrically addressable and energetically favorable interfaces, and substantial enhancement of both short-circuit currents and fill-factors compared to those made of planar graphene counterparts. Further, the 3D crumpled nanostructures may shed lights onto the development of effective electrocatalytic electrodes due to their open structure that simultaneously allows for efficient water flow and hydrogen escape.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [1] ;  [4] ;  [5] ;  [1]
  1. Univ. of California, Merced, CA (United States). School of Engineering
  2. Univ. of California, Merced, CA (United States). School of Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
  4. National Chiao Tung Univ., Hsinchu (Taiwan). Dept. of Electrophysics
  5. Univ. of California, Los Angeles, CA (United States). Dept. of Materials Science and Engineering; California NanoSystems Inst., Los Angeles, CA (United States)
Publication Date:
Grant/Contract Number:
AC02-05CH11231; PRF 54717-DNI10; NNX15AQ01A; NSC 101-2112-M-009-021-MY3
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Merced, CA (United States); National Chiao Tung Univ., Hsinchu (Taiwan)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); ACS Petroleum Fund (United States); National Aeronautic and Space Administration (NASA); Ministry of Science and Technology of Taiwan
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 25 ENERGY STORAGE; energy harvesting; materials for energy and catalysis
OSTI Identifier:
1411646

Ishihara, Hidetaka, Chen, Yen-Chang, De Marco, Nicholas, Lin, Oliver, Huang, Chih-Meng, Limsakoune, Vipawee, Chou, Yi-Chia, Yang, Yang, and Tung, Vincent. Electrohydrodynamic-assisted Assembly of Hierarchically Structured, 3D Crumpled Nanostructures for Efficient Solar Conversions. United States: N. p., Web. doi:10.1038/srep38701.
Ishihara, Hidetaka, Chen, Yen-Chang, De Marco, Nicholas, Lin, Oliver, Huang, Chih-Meng, Limsakoune, Vipawee, Chou, Yi-Chia, Yang, Yang, & Tung, Vincent. Electrohydrodynamic-assisted Assembly of Hierarchically Structured, 3D Crumpled Nanostructures for Efficient Solar Conversions. United States. doi:10.1038/srep38701.
Ishihara, Hidetaka, Chen, Yen-Chang, De Marco, Nicholas, Lin, Oliver, Huang, Chih-Meng, Limsakoune, Vipawee, Chou, Yi-Chia, Yang, Yang, and Tung, Vincent. 2016. "Electrohydrodynamic-assisted Assembly of Hierarchically Structured, 3D Crumpled Nanostructures for Efficient Solar Conversions". United States. doi:10.1038/srep38701. https://www.osti.gov/servlets/purl/1411646.
@article{osti_1411646,
title = {Electrohydrodynamic-assisted Assembly of Hierarchically Structured, 3D Crumpled Nanostructures for Efficient Solar Conversions},
author = {Ishihara, Hidetaka and Chen, Yen-Chang and De Marco, Nicholas and Lin, Oliver and Huang, Chih-Meng and Limsakoune, Vipawee and Chou, Yi-Chia and Yang, Yang and Tung, Vincent},
abstractNote = {The tantalizing prospect of harnessing the unique properties of graphene crumpled nanostructures continues to fuel tremendous interest in energy storage and harvesting applications. However, the paper ball-like, hard texture, and closed-sphere morphology of current 3D graphitic nanostructure production not only constricts the conductive pathways but also limits the accessible surface area. Here, we report new insights into electrohydrodynamically-generated droplets as colloidal nanoreactors in that the stimuli-responsive nature of reduced graphene oxide can lead to the formation of crumpled nanostructures with a combination of open structures and doubly curved, saddle-shaped edges. In particular, the crumpled nanostructures dynamically adapt to non-spherical, polyhedral shapes under continuous deposition, ultimately assembling into foam-like microstructures with a highly accessible surface area and spatially interconnected transport pathways. The implementation of such crumpled nanostructures as three-dimensional rear contacts for solar conversion applications realize benefits of a high aspect ratio, electrically addressable and energetically favorable interfaces, and substantial enhancement of both short-circuit currents and fill-factors compared to those made of planar graphene counterparts. Further, the 3D crumpled nanostructures may shed lights onto the development of effective electrocatalytic electrodes due to their open structure that simultaneously allows for efficient water flow and hydrogen escape.},
doi = {10.1038/srep38701},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {2016},
month = {12}
}

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