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Title: A three-dimensional hierarchical structure of cyclized-PAN/Si/Ni for mechanically stable silicon anodes

Abstract

Here, the main challenges associated with silicon anodes are their poor conductivity and severe structural degradation during cycling. Here we design a three-dimensional sandwich hierarchical structure that tackles these problems, and we demonstrate its use in flexible, large-area silicon anode assemblies. The design of the electrode is achieved via plasma enhanced chemical vapor deposition of silicon nanoparticles onto three-dimensional nickel foam followed by conformal coating of cyclized-PAN on the silicon surface, thus forming a sandwiched cyclized-PAN/Si/Ni hierarchical structure. The three-dimensional networks provide abundant electroactive zones and conductive transport paths, the conformal coating of cyclized-PAN accommodates volume change during cycling, and the monolithic electrode configuration without additional binders or conductive agents improves the energy density of the whole electrode. Furthermore, as a result of the sandwich hierarchical arrangement, the solid-electrolyte interface of the anode remains stable and spatially confined, leading to an increased reversible capacity and improved cycling stability (910 mA h g –1 after 100 cycles at 1.0 A g –1).

Authors:
 [1];  [2];  [2];  [1];  [2];  [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Beijing Institute of Technology, Beijing (China)
  2. Beijing Institute of Technology, Beijing (China); National Development Center of High Technology Green Materials, Beijing (China); Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing (China)
  3. Beijing Institute of Technology, Beijing (China); National Development Center of High Technology Green Materials, Beijing (China)
  4. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1461409
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Materials Chemistry. A
Additional Journal Information:
Journal Volume: 5; Journal Issue: 47; Journal ID: ISSN 2050-7488
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Silicon; Nickel disilicide; Cyclized-PAN; Hierarchical structure; Anode; Lithium ion batteries

Citation Formats

Bao, Wurigumula, Wang, Jing, Chen, Shi, Li, Weikang, Su, Yuefeng, Wu, Feng, Tan, Guoqiang, and Lu, Jun. A three-dimensional hierarchical structure of cyclized-PAN/Si/Ni for mechanically stable silicon anodes. United States: N. p., 2017. Web. doi:10.1039/c7ta08744f.
Bao, Wurigumula, Wang, Jing, Chen, Shi, Li, Weikang, Su, Yuefeng, Wu, Feng, Tan, Guoqiang, & Lu, Jun. A three-dimensional hierarchical structure of cyclized-PAN/Si/Ni for mechanically stable silicon anodes. United States. doi:10.1039/c7ta08744f.
Bao, Wurigumula, Wang, Jing, Chen, Shi, Li, Weikang, Su, Yuefeng, Wu, Feng, Tan, Guoqiang, and Lu, Jun. Wed . "A three-dimensional hierarchical structure of cyclized-PAN/Si/Ni for mechanically stable silicon anodes". United States. doi:10.1039/c7ta08744f. https://www.osti.gov/servlets/purl/1461409.
@article{osti_1461409,
title = {A three-dimensional hierarchical structure of cyclized-PAN/Si/Ni for mechanically stable silicon anodes},
author = {Bao, Wurigumula and Wang, Jing and Chen, Shi and Li, Weikang and Su, Yuefeng and Wu, Feng and Tan, Guoqiang and Lu, Jun},
abstractNote = {Here, the main challenges associated with silicon anodes are their poor conductivity and severe structural degradation during cycling. Here we design a three-dimensional sandwich hierarchical structure that tackles these problems, and we demonstrate its use in flexible, large-area silicon anode assemblies. The design of the electrode is achieved via plasma enhanced chemical vapor deposition of silicon nanoparticles onto three-dimensional nickel foam followed by conformal coating of cyclized-PAN on the silicon surface, thus forming a sandwiched cyclized-PAN/Si/Ni hierarchical structure. The three-dimensional networks provide abundant electroactive zones and conductive transport paths, the conformal coating of cyclized-PAN accommodates volume change during cycling, and the monolithic electrode configuration without additional binders or conductive agents improves the energy density of the whole electrode. Furthermore, as a result of the sandwich hierarchical arrangement, the solid-electrolyte interface of the anode remains stable and spatially confined, leading to an increased reversible capacity and improved cycling stability (910 mA h g–1 after 100 cycles at 1.0 A g–1).},
doi = {10.1039/c7ta08744f},
journal = {Journal of Materials Chemistry. A},
issn = {2050-7488},
number = 47,
volume = 5,
place = {United States},
year = {2017},
month = {11}
}

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