All-solid-state thin film battery based on well-aligned slanted LiCoO 2 nanowires fabricated by glancing angle deposition

Miyoung Yoon, Seunghwan Lee, Daehee Lee, Joosun Kim, Joo Ho Moon

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We fabricated all-solid-state thin film batteries based on well-aligned slanted LiCoO 2 nanowires by glancing angle deposition, as a facile template-free method in order to increase the electrochemically active site, i.e., the contact area between the solid electrolyte and the electrode. A highly porous thin film composed of well-separated slanted LiCoO 2 nanowires not only facilitates the penetration of solid electrolyte phase into the cathode, but also alleviates the thermally and mechanically induced stresses during post-annealing and electrochemical cycling. The all-solid-state thin film battery based on the well-aligned slanted LiCoO 2 nanowires, whose contact area between electrolyte and electrode was three times as high as that of a dense thin film, could provide additional migration pathways for lithium ion diffusion due to the enlarged reaction sites. This resulted in enhanced electrochemical kinetics, thereby leading to better rate capability and long-term cyclic stability as compared to the dense LiCoO 2 thin film.

Original languageEnglish
Pages (from-to)537-544
Number of pages8
JournalApplied Surface Science
Volume412
DOIs
Publication statusPublished - 2017 Aug 1

Fingerprint

Nanowires
Thin films
Solid electrolytes
Electrodes
Lithium
Electrolytes
Cathodes
Annealing
Ions
Kinetics

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

Cite this

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title = "All-solid-state thin film battery based on well-aligned slanted LiCoO 2 nanowires fabricated by glancing angle deposition",
abstract = "We fabricated all-solid-state thin film batteries based on well-aligned slanted LiCoO 2 nanowires by glancing angle deposition, as a facile template-free method in order to increase the electrochemically active site, i.e., the contact area between the solid electrolyte and the electrode. A highly porous thin film composed of well-separated slanted LiCoO 2 nanowires not only facilitates the penetration of solid electrolyte phase into the cathode, but also alleviates the thermally and mechanically induced stresses during post-annealing and electrochemical cycling. The all-solid-state thin film battery based on the well-aligned slanted LiCoO 2 nanowires, whose contact area between electrolyte and electrode was three times as high as that of a dense thin film, could provide additional migration pathways for lithium ion diffusion due to the enlarged reaction sites. This resulted in enhanced electrochemical kinetics, thereby leading to better rate capability and long-term cyclic stability as compared to the dense LiCoO 2 thin film.",
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All-solid-state thin film battery based on well-aligned slanted LiCoO 2 nanowires fabricated by glancing angle deposition . / Yoon, Miyoung; Lee, Seunghwan; Lee, Daehee; Kim, Joosun; Moon, Joo Ho.

In: Applied Surface Science, Vol. 412, 01.08.2017, p. 537-544.

Research output: Contribution to journalArticle

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T1 - All-solid-state thin film battery based on well-aligned slanted LiCoO 2 nanowires fabricated by glancing angle deposition

AU - Yoon, Miyoung

AU - Lee, Seunghwan

AU - Lee, Daehee

AU - Kim, Joosun

AU - Moon, Joo Ho

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AB - We fabricated all-solid-state thin film batteries based on well-aligned slanted LiCoO 2 nanowires by glancing angle deposition, as a facile template-free method in order to increase the electrochemically active site, i.e., the contact area between the solid electrolyte and the electrode. A highly porous thin film composed of well-separated slanted LiCoO 2 nanowires not only facilitates the penetration of solid electrolyte phase into the cathode, but also alleviates the thermally and mechanically induced stresses during post-annealing and electrochemical cycling. The all-solid-state thin film battery based on the well-aligned slanted LiCoO 2 nanowires, whose contact area between electrolyte and electrode was three times as high as that of a dense thin film, could provide additional migration pathways for lithium ion diffusion due to the enlarged reaction sites. This resulted in enhanced electrochemical kinetics, thereby leading to better rate capability and long-term cyclic stability as compared to the dense LiCoO 2 thin film.

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