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Ultrastable Graphene-Encapsulated 3 nm Nanoparticles by In Situ Chemical Vapor Deposition.

Byline: Dong Sung Choi, Chanhoon Kim, Joonwon Lim, Su-Ho Cho, Gil Yong Lee, Ho Jin Lee, Jang Wook Choi, Heeyeon Kim, Il-Doo Kim,Sang Ouk Kim Keywords: Co.sub.3O.sub.4 anode; encapsulation; graphene; in situ CVD; lithium-ion batteries Abstract Nanoscale materials offer enormous opportunities for cata... Full description

Journal Title: Advanced materials (Deerfield Beach Fla.), December 2018, Vol.30(51), p.e1805023
Main Author: Choi, Dong Sung
Other Authors: Kim, Chanhoon , Lim, Joonwon , Cho, Su-Ho , Lee, Gil Yong , Lee, Ho Jin , Choi, Jang Wook , Kim, Heeyeon , Kim, Il-Doo , Kim, Sang Ouk
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1521-4095 ; DOI: 1521-4095 ; DOI: 10.1002/adma.201805023
Link: http://search.proquest.com/docview/2120201907/?pq-origsite=primo
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title: Ultrastable Graphene-Encapsulated 3 nm Nanoparticles by In Situ Chemical Vapor Deposition.
format: Article
creator:
  • Choi, Dong Sung
  • Kim, Chanhoon
  • Lim, Joonwon
  • Cho, Su-Ho
  • Lee, Gil Yong
  • Lee, Ho Jin
  • Choi, Jang Wook
  • Kim, Heeyeon
  • Kim, Il-Doo
  • Kim, Sang Ouk
subjects:
  • Co3o4 Anode
  • Encapsulation
  • Graphene
  • in Situ Cvd
  • Lithium-Ion Batteries
ispartof: Advanced materials (Deerfield Beach, Fla.), December 2018, Vol.30(51), p.e1805023
description: Byline: Dong Sung Choi, Chanhoon Kim, Joonwon Lim, Su-Ho Cho, Gil Yong Lee, Ho Jin Lee, Jang Wook Choi, Heeyeon Kim, Il-Doo Kim,Sang Ouk Kim Keywords: Co.sub.3O.sub.4 anode; encapsulation; graphene; in situ CVD; lithium-ion batteries Abstract Nanoscale materials offer enormous opportunities for catalysis, sensing, energy storage, and so on, along with their superior surface activity and extremely large surface area. Unfortunately, their strong reactivity causes severe degradation and oxidation even under ambient conditions and thereby deteriorates long-term usability. Here superlative stable graphene-encapsulated nanoparticles with a narrow diameter distribution prepared via in situ chemical vapor deposition (CVD) are presented. The judiciously designed CVD protocol generates 3 nm size metal and ceramic nanoparticles intimately encapsulated by few-layer graphene shells. Significantly, graphene-encapsulated Co.sub.3O.sub.4 nanoparticles exhibit outstanding structural and functional integrity over 2000 cycles of lithiation/delithiation for Li-ion battery anode application, accompanied by 200% reversible volume change of the inner core particles. The insight obtained from this approach offers guidance for utilizing high-capacity electrode materials for Li-ion batteries. Furthermore, this in situ CVD synthesis is compatible with many different metal precursors and postsynthetic treatments, including oxidation, phosphidation, and sulfidation, and thus offers a versatile platform for reliable high-performance catalysis and energy storage/conversion with nanomaterials. CAPTION(S): Supplementary
language: eng
source:
identifier: E-ISSN: 1521-4095 ; DOI: 1521-4095 ; DOI: 10.1002/adma.201805023
fulltext: fulltext
issn:
  • 15214095
  • 1521-4095
url: Link


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titleUltrastable Graphene-Encapsulated 3 nm Nanoparticles by In Situ Chemical Vapor Deposition.
creatorChoi, Dong Sung ; Kim, Chanhoon ; Lim, Joonwon ; Cho, Su-Ho ; Lee, Gil Yong ; Lee, Ho Jin ; Choi, Jang Wook ; Kim, Heeyeon ; Kim, Il-Doo ; Kim, Sang Ouk
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