Magnéli Phase Titanium Oxide as a Novel Anode Material for Potassium-Ion Batteries

Geon Woo Lee; Byung Hoon Park; Masoud Nazarian-Samani; Young Hwan Kim; Kwang Chul Roh; Kwang Bum Kim

doi:10.1021/acsomega.9b00045

Magnéli Phase Titanium Oxide as a Novel Anode Material for Potassium-Ion Batteries

Geon Woo Lee, Byung Hoon Park, Masoud Nazarian-Samani, Young Hwan Kim, Kwang Chul Roh, Kwang Bum Kim

Department of Materials Science and Engineering

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

6 Citations (Scopus)

Abstract

Recently, K-ion batteries (KIBs) have attracted attention for potential applications in next-generation energy storage devices principally on the account of their abundancy and lower cost. Herein, for the first time, we report an anatase TiO ₂ -derived Magnéli phase Ti ₆ O ₁₁ as a novel anode material for KIBs. We incorporate pristine carbon nanotube (CNT) on the TiO ₂ host materials due to the low electronic conductivity of the host materials. TiO ₂ transformed to Magnéli phase Ti ₆ O ₁₁ after the first insertion/deinsertion of K ions. From the second cycle, Magnéli phase Ti ₆ O ₁₁ /CNT composite showed reversible charge/discharge profiles with ∼150 mA h g ^-1 at 0.05 A g ^-1 . Ex situ X-ray diffraction and transmission electron microscopy analyses revealed that the charge storage process of Magnéli phase Ti ₆ O ₁₁ proceeded via the conversion reaction during potassium ion insertion/deinsertion. The Magnéli phase Ti ₆ O ₁₁ /CNT composite electrode showed long-term cycling life over 500 cycles at 200 mA g ^-1 , exhibiting a capacity retention of 76% and a high Coulombic efficiency of 99.9%. These salient results presented here provide a novel understanding of the K-ion storage mechanisms in the extensively investigated oxide-based material for Li-ion batteries and Na-ion batteries, shedding light on the development of promising electrode materials for next-generation batteries.

Original language	English
Pages (from-to)	5304-5309
Number of pages	6
Journal	ACS Omega
Volume	4
Issue number	3
DOIs	https://doi.org/10.1021/acsomega.9b00045
Publication status	Published - 2019 Mar 14

Bibliographical note

Funding Information:
This work was supported by an Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Trade, Industry & Energy (MOTIE) (No. 20172420108590) and the Technology Innovation Program or Industrial Strategic Technology Development Program (10062226, development of flexible hybrid capacitor (0.25 mWh/cm2) composed of graphene-based flexible electrode and gel polymer electrolyte with high electrolyte uptake) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea).

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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@article{ed0550ccae264862bd0f6d933c4b052d,

title = "Magn{\'e}li Phase Titanium Oxide as a Novel Anode Material for Potassium-Ion Batteries",

abstract = " Recently, K-ion batteries (KIBs) have attracted attention for potential applications in next-generation energy storage devices principally on the account of their abundancy and lower cost. Herein, for the first time, we report an anatase TiO 2 -derived Magn{\'e}li phase Ti 6 O 11 as a novel anode material for KIBs. We incorporate pristine carbon nanotube (CNT) on the TiO 2 host materials due to the low electronic conductivity of the host materials. TiO 2 transformed to Magn{\'e}li phase Ti 6 O 11 after the first insertion/deinsertion of K ions. From the second cycle, Magn{\'e}li phase Ti 6 O 11 /CNT composite showed reversible charge/discharge profiles with ∼150 mA h g -1 at 0.05 A g -1 . Ex situ X-ray diffraction and transmission electron microscopy analyses revealed that the charge storage process of Magn{\'e}li phase Ti 6 O 11 proceeded via the conversion reaction during potassium ion insertion/deinsertion. The Magn{\'e}li phase Ti 6 O 11 /CNT composite electrode showed long-term cycling life over 500 cycles at 200 mA g -1 , exhibiting a capacity retention of 76% and a high Coulombic efficiency of 99.9%. These salient results presented here provide a novel understanding of the K-ion storage mechanisms in the extensively investigated oxide-based material for Li-ion batteries and Na-ion batteries, shedding light on the development of promising electrode materials for next-generation batteries.",

author = "Lee, {Geon Woo} and Park, {Byung Hoon} and Masoud Nazarian-Samani and Kim, {Young Hwan} and Roh, {Kwang Chul} and Kim, {Kwang Bum}",

note = "Funding Information: This work was supported by an Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Trade, Industry & Energy (MOTIE) (No. 20172420108590) and the Technology Innovation Program or Industrial Strategic Technology Development Program (10062226, development of flexible hybrid capacitor (0.25 mWh/cm2) composed of graphene-based flexible electrode and gel polymer electrolyte with high electrolyte uptake) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea).",

year = "2019",

month = mar,

day = "14",

doi = "10.1021/acsomega.9b00045",

language = "English",

volume = "4",

pages = "5304--5309",

journal = "ACS Omega",

issn = "2470-1343",

publisher = "American Chemical Society",

number = "3",

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T1 - Magnéli Phase Titanium Oxide as a Novel Anode Material for Potassium-Ion Batteries

AU - Lee, Geon Woo

AU - Park, Byung Hoon

AU - Nazarian-Samani, Masoud

AU - Kim, Young Hwan

AU - Roh, Kwang Chul

AU - Kim, Kwang Bum

N1 - Funding Information: This work was supported by an Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Trade, Industry & Energy (MOTIE) (No. 20172420108590) and the Technology Innovation Program or Industrial Strategic Technology Development Program (10062226, development of flexible hybrid capacitor (0.25 mWh/cm2) composed of graphene-based flexible electrode and gel polymer electrolyte with high electrolyte uptake) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea).

PY - 2019/3/14

Y1 - 2019/3/14

N2 - Recently, K-ion batteries (KIBs) have attracted attention for potential applications in next-generation energy storage devices principally on the account of their abundancy and lower cost. Herein, for the first time, we report an anatase TiO 2 -derived Magnéli phase Ti 6 O 11 as a novel anode material for KIBs. We incorporate pristine carbon nanotube (CNT) on the TiO 2 host materials due to the low electronic conductivity of the host materials. TiO 2 transformed to Magnéli phase Ti 6 O 11 after the first insertion/deinsertion of K ions. From the second cycle, Magnéli phase Ti 6 O 11 /CNT composite showed reversible charge/discharge profiles with ∼150 mA h g -1 at 0.05 A g -1 . Ex situ X-ray diffraction and transmission electron microscopy analyses revealed that the charge storage process of Magnéli phase Ti 6 O 11 proceeded via the conversion reaction during potassium ion insertion/deinsertion. The Magnéli phase Ti 6 O 11 /CNT composite electrode showed long-term cycling life over 500 cycles at 200 mA g -1 , exhibiting a capacity retention of 76% and a high Coulombic efficiency of 99.9%. These salient results presented here provide a novel understanding of the K-ion storage mechanisms in the extensively investigated oxide-based material for Li-ion batteries and Na-ion batteries, shedding light on the development of promising electrode materials for next-generation batteries.

AB - Recently, K-ion batteries (KIBs) have attracted attention for potential applications in next-generation energy storage devices principally on the account of their abundancy and lower cost. Herein, for the first time, we report an anatase TiO 2 -derived Magnéli phase Ti 6 O 11 as a novel anode material for KIBs. We incorporate pristine carbon nanotube (CNT) on the TiO 2 host materials due to the low electronic conductivity of the host materials. TiO 2 transformed to Magnéli phase Ti 6 O 11 after the first insertion/deinsertion of K ions. From the second cycle, Magnéli phase Ti 6 O 11 /CNT composite showed reversible charge/discharge profiles with ∼150 mA h g -1 at 0.05 A g -1 . Ex situ X-ray diffraction and transmission electron microscopy analyses revealed that the charge storage process of Magnéli phase Ti 6 O 11 proceeded via the conversion reaction during potassium ion insertion/deinsertion. The Magnéli phase Ti 6 O 11 /CNT composite electrode showed long-term cycling life over 500 cycles at 200 mA g -1 , exhibiting a capacity retention of 76% and a high Coulombic efficiency of 99.9%. These salient results presented here provide a novel understanding of the K-ion storage mechanisms in the extensively investigated oxide-based material for Li-ion batteries and Na-ion batteries, shedding light on the development of promising electrode materials for next-generation batteries.

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JO - ACS Omega

JF - ACS Omega

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