Hierarchical Tubular-Structured MoSe2 Nanosheets/N-Doped Carbon Nanocomposite with Enhanced Sodium Storage Properties

Jin Koo Kim, Ko Eun Lim, Won Jeong Hwang, Yun Chan Kang, Seung Keun Park

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Intimately coupled carbon/molybdenum-based hierarchical nanostructures are promising anodes for high-performance sodium-ion batteries owing to the combined effects of the two components and their robust structural stability. Mo–polydopamine (PDA) complexes are appealing precursors for the preparation of various Mo-based nanostructures containing N-doped carbon (NC). A facile method for the fabrication of hierarchical tubular nanocomposites with intimately coupled MoSe2 and NC nanosheets has been developed, which involves the preparation of Mo–PDA hybrid nanotubes through a chemical route followed by two heat treatments. The strong coupling between Mo anions and the catechol groups in dopamine not only restricts the crystallite size but also inhibits agglomeration during selenization, resulting in few-layered MoSe2 nanosheets embedded in hierarchical NC substrates. The as-synthesized nanotube composites are constructed by assembling primary MoSe2/NC nanosheets. This unique structure not only increases the number of active sites but also shortens the diffusion length of ions and enhances the electronic conductivity of electrode materials. The as-synthesized hierarchical MoSe2/NC nanotubes deliver a high capacity of 429 mAh g−1 at 1 A g−1 after the 150th cycle when used as anodes in sodium-ion batteries. Furthermore, at a high current density of 10 A g−1, a high discharge capacity of 236 mAh g−1 is achieved.

Original languageEnglish
JournalChemSusChem
DOIs
Publication statusAccepted/In press - 2019 Jan 1

Keywords

  • batteries
  • carbon
  • molybdenum
  • nanostructures
  • templating

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

Cite this

Hierarchical Tubular-Structured MoSe2 Nanosheets/N-Doped Carbon Nanocomposite with Enhanced Sodium Storage Properties. / Kim, Jin Koo; Lim, Ko Eun; Hwang, Won Jeong; Kang, Yun Chan; Park, Seung Keun.

In: ChemSusChem, 01.01.2019.

Research output: Contribution to journalArticle

@article{7f48b0cc31394523854be10e46335b6b,
title = "Hierarchical Tubular-Structured MoSe2 Nanosheets/N-Doped Carbon Nanocomposite with Enhanced Sodium Storage Properties",
abstract = "Intimately coupled carbon/molybdenum-based hierarchical nanostructures are promising anodes for high-performance sodium-ion batteries owing to the combined effects of the two components and their robust structural stability. Mo–polydopamine (PDA) complexes are appealing precursors for the preparation of various Mo-based nanostructures containing N-doped carbon (NC). A facile method for the fabrication of hierarchical tubular nanocomposites with intimately coupled MoSe2 and NC nanosheets has been developed, which involves the preparation of Mo–PDA hybrid nanotubes through a chemical route followed by two heat treatments. The strong coupling between Mo anions and the catechol groups in dopamine not only restricts the crystallite size but also inhibits agglomeration during selenization, resulting in few-layered MoSe2 nanosheets embedded in hierarchical NC substrates. The as-synthesized nanotube composites are constructed by assembling primary MoSe2/NC nanosheets. This unique structure not only increases the number of active sites but also shortens the diffusion length of ions and enhances the electronic conductivity of electrode materials. The as-synthesized hierarchical MoSe2/NC nanotubes deliver a high capacity of 429 mAh g−1 at 1 A g−1 after the 150th cycle when used as anodes in sodium-ion batteries. Furthermore, at a high current density of 10 A g−1, a high discharge capacity of 236 mAh g−1 is achieved.",
keywords = "batteries, carbon, molybdenum, nanostructures, templating",
author = "Kim, {Jin Koo} and Lim, {Ko Eun} and Hwang, {Won Jeong} and Kang, {Yun Chan} and Park, {Seung Keun}",
year = "2019",
month = "1",
day = "1",
doi = "10.1002/cssc.201902798",
language = "English",
journal = "ChemSusChem",
issn = "1864-5631",
publisher = "Wiley-VCH Verlag",

}

TY - JOUR

T1 - Hierarchical Tubular-Structured MoSe2 Nanosheets/N-Doped Carbon Nanocomposite with Enhanced Sodium Storage Properties

AU - Kim, Jin Koo

AU - Lim, Ko Eun

AU - Hwang, Won Jeong

AU - Kang, Yun Chan

AU - Park, Seung Keun

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Intimately coupled carbon/molybdenum-based hierarchical nanostructures are promising anodes for high-performance sodium-ion batteries owing to the combined effects of the two components and their robust structural stability. Mo–polydopamine (PDA) complexes are appealing precursors for the preparation of various Mo-based nanostructures containing N-doped carbon (NC). A facile method for the fabrication of hierarchical tubular nanocomposites with intimately coupled MoSe2 and NC nanosheets has been developed, which involves the preparation of Mo–PDA hybrid nanotubes through a chemical route followed by two heat treatments. The strong coupling between Mo anions and the catechol groups in dopamine not only restricts the crystallite size but also inhibits agglomeration during selenization, resulting in few-layered MoSe2 nanosheets embedded in hierarchical NC substrates. The as-synthesized nanotube composites are constructed by assembling primary MoSe2/NC nanosheets. This unique structure not only increases the number of active sites but also shortens the diffusion length of ions and enhances the electronic conductivity of electrode materials. The as-synthesized hierarchical MoSe2/NC nanotubes deliver a high capacity of 429 mAh g−1 at 1 A g−1 after the 150th cycle when used as anodes in sodium-ion batteries. Furthermore, at a high current density of 10 A g−1, a high discharge capacity of 236 mAh g−1 is achieved.

AB - Intimately coupled carbon/molybdenum-based hierarchical nanostructures are promising anodes for high-performance sodium-ion batteries owing to the combined effects of the two components and their robust structural stability. Mo–polydopamine (PDA) complexes are appealing precursors for the preparation of various Mo-based nanostructures containing N-doped carbon (NC). A facile method for the fabrication of hierarchical tubular nanocomposites with intimately coupled MoSe2 and NC nanosheets has been developed, which involves the preparation of Mo–PDA hybrid nanotubes through a chemical route followed by two heat treatments. The strong coupling between Mo anions and the catechol groups in dopamine not only restricts the crystallite size but also inhibits agglomeration during selenization, resulting in few-layered MoSe2 nanosheets embedded in hierarchical NC substrates. The as-synthesized nanotube composites are constructed by assembling primary MoSe2/NC nanosheets. This unique structure not only increases the number of active sites but also shortens the diffusion length of ions and enhances the electronic conductivity of electrode materials. The as-synthesized hierarchical MoSe2/NC nanotubes deliver a high capacity of 429 mAh g−1 at 1 A g−1 after the 150th cycle when used as anodes in sodium-ion batteries. Furthermore, at a high current density of 10 A g−1, a high discharge capacity of 236 mAh g−1 is achieved.

KW - batteries

KW - carbon

KW - molybdenum

KW - nanostructures

KW - templating

UR - http://www.scopus.com/inward/record.url?scp=85076904370&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85076904370&partnerID=8YFLogxK

U2 - 10.1002/cssc.201902798

DO - 10.1002/cssc.201902798

M3 - Article

AN - SCOPUS:85076904370

JO - ChemSusChem

JF - ChemSusChem

SN - 1864-5631

ER -