Design and synthesis of Janus-structured mutually doped SnO2-Co3O4 hollow nanostructures as superior anode materials for lithium-ion batteries

Gi Dae Park, Jung Kul Lee, Yun Chan Kang

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Janus-structured materials composed of mutually doped SnO2-Co3O4 hollow nanostructures were designed and synthesized for use as an efficient anode material for lithium-ion batteries. The Janus-structured powder consisting of Co-doped SnSe nanoplates and Sn-doped CoSex polyhedral structures was synthesized by a one-pot spray pyrolysis process. Similarly, the structured SnO2-Co3O4 powder consisting of Co-doped SnO2 hollow nanoplates and Sn-doped Co3O4 hollow polyhedral structures was prepared by a nanoscale Kirkendall diffusion process. The doping of both materials in the hollow SnO2 nanoplates and Co3O4 polyhedral structures improved the reversible capacities and cycling performances of the Janus-structured SnO2-Co3O4 composite powder. This was achieved by minimizing the growth of metallic Sn and Co nanocrystals during cycling, improving the decomposition of Li2O, and facilitating the conversion of Sn to SnO2 during the delithiation process through a catalytic effect of metallic Co. The discharge capacity of the Janus-structured SnO2-Co3O4 hollow powder with a Sn:Co ratio of 1:2 at a current density of 1 A g-1 for the 1000th cycle was 1058.7 mA h g-1. This Janus-structured mutually doped SnO2-Co3O4 composite powder showed extraordinary cycling and rate performances for lithium ion storage.

Original languageEnglish
Pages (from-to)25319-25327
Number of pages9
JournalJournal of Materials Chemistry A
Volume5
Issue number48
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

Powders
Nanostructures
Anodes
Spray pyrolysis
Composite materials
Lithium
Nanocrystals
Current density
Doping (additives)
Lithium-ion batteries
Ions
Decomposition

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Design and synthesis of Janus-structured mutually doped SnO2-Co3O4 hollow nanostructures as superior anode materials for lithium-ion batteries. / Park, Gi Dae; Lee, Jung Kul; Kang, Yun Chan.

In: Journal of Materials Chemistry A, Vol. 5, No. 48, 01.01.2017, p. 25319-25327.

Research output: Contribution to journalArticle

@article{0083b4353a6745c3b297407246f9b51a,
title = "Design and synthesis of Janus-structured mutually doped SnO2-Co3O4 hollow nanostructures as superior anode materials for lithium-ion batteries",
abstract = "Janus-structured materials composed of mutually doped SnO2-Co3O4 hollow nanostructures were designed and synthesized for use as an efficient anode material for lithium-ion batteries. The Janus-structured powder consisting of Co-doped SnSe nanoplates and Sn-doped CoSex polyhedral structures was synthesized by a one-pot spray pyrolysis process. Similarly, the structured SnO2-Co3O4 powder consisting of Co-doped SnO2 hollow nanoplates and Sn-doped Co3O4 hollow polyhedral structures was prepared by a nanoscale Kirkendall diffusion process. The doping of both materials in the hollow SnO2 nanoplates and Co3O4 polyhedral structures improved the reversible capacities and cycling performances of the Janus-structured SnO2-Co3O4 composite powder. This was achieved by minimizing the growth of metallic Sn and Co nanocrystals during cycling, improving the decomposition of Li2O, and facilitating the conversion of Sn to SnO2 during the delithiation process through a catalytic effect of metallic Co. The discharge capacity of the Janus-structured SnO2-Co3O4 hollow powder with a Sn:Co ratio of 1:2 at a current density of 1 A g-1 for the 1000th cycle was 1058.7 mA h g-1. This Janus-structured mutually doped SnO2-Co3O4 composite powder showed extraordinary cycling and rate performances for lithium ion storage.",
author = "Park, {Gi Dae} and Lee, {Jung Kul} and Kang, {Yun Chan}",
year = "2017",
month = "1",
day = "1",
doi = "10.1039/c7ta08335a",
language = "English",
volume = "5",
pages = "25319--25327",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "48",

}

TY - JOUR

T1 - Design and synthesis of Janus-structured mutually doped SnO2-Co3O4 hollow nanostructures as superior anode materials for lithium-ion batteries

AU - Park, Gi Dae

AU - Lee, Jung Kul

AU - Kang, Yun Chan

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Janus-structured materials composed of mutually doped SnO2-Co3O4 hollow nanostructures were designed and synthesized for use as an efficient anode material for lithium-ion batteries. The Janus-structured powder consisting of Co-doped SnSe nanoplates and Sn-doped CoSex polyhedral structures was synthesized by a one-pot spray pyrolysis process. Similarly, the structured SnO2-Co3O4 powder consisting of Co-doped SnO2 hollow nanoplates and Sn-doped Co3O4 hollow polyhedral structures was prepared by a nanoscale Kirkendall diffusion process. The doping of both materials in the hollow SnO2 nanoplates and Co3O4 polyhedral structures improved the reversible capacities and cycling performances of the Janus-structured SnO2-Co3O4 composite powder. This was achieved by minimizing the growth of metallic Sn and Co nanocrystals during cycling, improving the decomposition of Li2O, and facilitating the conversion of Sn to SnO2 during the delithiation process through a catalytic effect of metallic Co. The discharge capacity of the Janus-structured SnO2-Co3O4 hollow powder with a Sn:Co ratio of 1:2 at a current density of 1 A g-1 for the 1000th cycle was 1058.7 mA h g-1. This Janus-structured mutually doped SnO2-Co3O4 composite powder showed extraordinary cycling and rate performances for lithium ion storage.

AB - Janus-structured materials composed of mutually doped SnO2-Co3O4 hollow nanostructures were designed and synthesized for use as an efficient anode material for lithium-ion batteries. The Janus-structured powder consisting of Co-doped SnSe nanoplates and Sn-doped CoSex polyhedral structures was synthesized by a one-pot spray pyrolysis process. Similarly, the structured SnO2-Co3O4 powder consisting of Co-doped SnO2 hollow nanoplates and Sn-doped Co3O4 hollow polyhedral structures was prepared by a nanoscale Kirkendall diffusion process. The doping of both materials in the hollow SnO2 nanoplates and Co3O4 polyhedral structures improved the reversible capacities and cycling performances of the Janus-structured SnO2-Co3O4 composite powder. This was achieved by minimizing the growth of metallic Sn and Co nanocrystals during cycling, improving the decomposition of Li2O, and facilitating the conversion of Sn to SnO2 during the delithiation process through a catalytic effect of metallic Co. The discharge capacity of the Janus-structured SnO2-Co3O4 hollow powder with a Sn:Co ratio of 1:2 at a current density of 1 A g-1 for the 1000th cycle was 1058.7 mA h g-1. This Janus-structured mutually doped SnO2-Co3O4 composite powder showed extraordinary cycling and rate performances for lithium ion storage.

UR - http://www.scopus.com/inward/record.url?scp=85038210823&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85038210823&partnerID=8YFLogxK

U2 - 10.1039/c7ta08335a

DO - 10.1039/c7ta08335a

M3 - Article

AN - SCOPUS:85038210823

VL - 5

SP - 25319

EP - 25327

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 48

ER -