Binder-free nanotubular hetero-structured anodes of a-Fe                         2                         O                         3                          (hematite) and TiN for li-ion battery

Hochul Nam; Changdeuck Bae; Hyunjung Shin

doi:10.1002/slct.201801892

Binder-free nanotubular hetero-structured anodes of a-Fe ₂ O ₃ (hematite) and TiN for li-ion battery

Hochul Nam
, Changdeuck Bae
, Hyunjung Shin

Department of Energy

Sungkyunkwan University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Hematite (α-Fe ₂ O ₃ ) has attracted considerable attention as an anode material due to its high theoretical capacity (1,007 mAhg ^-1 ), low cost, and non-toxicity. The conversion reaction, which often leads to the pulverization of hematite and degradation of electrochemical performances (e. g., capacity retention, high rate capability), is also found in hematite as Fe ₂ O ₃ + 6Li ⁺ + 6e ^- → 2Fe + Li ₂ O. Here, we synthesized nanotubular hetero-structures using α-Fe ₂ O ₃ and TiN via atomic layer deposition (ALD) without any binders. The initial reversible charge capacity of Fe ₂ O ₃ @TiN nanotubes (NTs) was 952 mAhg ^-1 with a retention of 673 mAhg ^-1 after 30 cycles. Porous Fe2O3 NTs with conductive TiN NTs exhibited enhanced electrochemical performances when used as an anode material.

Original language	English
Pages (from-to)	11027-11034
Number of pages	8
Journal	ChemistrySelect
Volume	3
Issue number	39
DOIs	https://doi.org/10.1002/slct.201801892
State	Published - 24 Oct 2018

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Atomic layer deposition
Hematite
Iron oxide
Li-Ion battery
TiN

Access to Document

10.1002/slct.201801892

Cite this

@article{10f450fcb4f14770a6d088f02239317a,

title = " Binder-free nanotubular hetero-structured anodes of a-Fe 2 O 3 (hematite) and TiN for li-ion battery ",

abstract = " Hematite (α-Fe 2 O 3 ) has attracted considerable attention as an anode material due to its high theoretical capacity (1,007 mAhg -1 ), low cost, and non-toxicity. The conversion reaction, which often leads to the pulverization of hematite and degradation of electrochemical performances (e. g., capacity retention, high rate capability), is also found in hematite as Fe 2 O 3 + 6Li + + 6e - → 2Fe + Li 2 O. Here, we synthesized nanotubular hetero-structures using α-Fe 2 O 3 and TiN via atomic layer deposition (ALD) without any binders. The initial reversible charge capacity of Fe 2 O 3 @TiN nanotubes (NTs) was 952 mAhg -1 with a retention of 673 mAhg -1 after 30 cycles. Porous Fe2O3 NTs with conductive TiN NTs exhibited enhanced electrochemical performances when used as an anode material.",

keywords = "Atomic layer deposition, Hematite, Iron oxide, Li-Ion battery, TiN",

author = "Hochul Nam and Changdeuck Bae and Hyunjung Shin",

note = "Publisher Copyright: {\textcopyright} 2018 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

year = "2018",

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Binder-free nanotubular hetero-structured anodes of a-Fe ₂ O ₃ (hematite) and TiN for li-ion battery . / Nam, Hochul; Bae, Changdeuck; Shin, Hyunjung.
In: ChemistrySelect, Vol. 3, No. 39, 24.10.2018, p. 11027-11034.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Binder-free nanotubular hetero-structured anodes of a-Fe 2 O 3 (hematite) and TiN for li-ion battery

AU - Nam, Hochul

AU - Bae, Changdeuck

AU - Shin, Hyunjung

PY - 2018/10/24

Y1 - 2018/10/24

N2 - Hematite (α-Fe 2 O 3 ) has attracted considerable attention as an anode material due to its high theoretical capacity (1,007 mAhg -1 ), low cost, and non-toxicity. The conversion reaction, which often leads to the pulverization of hematite and degradation of electrochemical performances (e. g., capacity retention, high rate capability), is also found in hematite as Fe 2 O 3 + 6Li + + 6e - → 2Fe + Li 2 O. Here, we synthesized nanotubular hetero-structures using α-Fe 2 O 3 and TiN via atomic layer deposition (ALD) without any binders. The initial reversible charge capacity of Fe 2 O 3 @TiN nanotubes (NTs) was 952 mAhg -1 with a retention of 673 mAhg -1 after 30 cycles. Porous Fe2O3 NTs with conductive TiN NTs exhibited enhanced electrochemical performances when used as an anode material.

AB - Hematite (α-Fe 2 O 3 ) has attracted considerable attention as an anode material due to its high theoretical capacity (1,007 mAhg -1 ), low cost, and non-toxicity. The conversion reaction, which often leads to the pulverization of hematite and degradation of electrochemical performances (e. g., capacity retention, high rate capability), is also found in hematite as Fe 2 O 3 + 6Li + + 6e - → 2Fe + Li 2 O. Here, we synthesized nanotubular hetero-structures using α-Fe 2 O 3 and TiN via atomic layer deposition (ALD) without any binders. The initial reversible charge capacity of Fe 2 O 3 @TiN nanotubes (NTs) was 952 mAhg -1 with a retention of 673 mAhg -1 after 30 cycles. Porous Fe2O3 NTs with conductive TiN NTs exhibited enhanced electrochemical performances when used as an anode material.

KW - Atomic layer deposition

KW - Hematite

KW - Iron oxide

KW - Li-Ion battery

KW - TiN

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DO - 10.1002/slct.201801892

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