Nickel disulfide nanosheet as promising cathode electrocatalyst for long-life lithium–oxygen batteries

Bobae Ju; Hee Jo Song; Gwang Hee Lee; Myeong Chang Sung; Dong Wan Kim

doi:10.1016/j.ensm.2019.06.017

Nickel disulfide nanosheet as promising cathode electrocatalyst for long-life lithium–oxygen batteries

Bobae Ju, Hee Jo Song, Gwang Hee Lee, Myeong Chang Sung, Dong Wan Kim

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

23 Citations (Scopus)

Abstract

Lithium–oxygen batteries (LOBs) are considered as next-generation energy storage systems owing to their high energy densities. In order to achieve high-performance LOBs, it is necessary to develop efficient electrocatalysts that exhibit reversible formation and decomposition of discharge products on the oxygen-electrode side. In this study, single-crystalline NiS₂ nanosheets (NiS₂-NSs) are fabricated as an efficient electrocatalyst in an oxygen-electrode for high-performance LOBs. Ni(OH)₂-NSs are prepared through a hydrothermal reaction and subsequently reacted with sulfur by a solid/gas phase reaction process to form NiS₂-NSs. As an electrocatalyst in an oxygen-electrode, the single-crystalline NiS₂-NSs can reversibly form and decompose the discharge products during the discharging and charging processes, respectively. In particular, the NiS₂-NSs more effectively decompose the discharge products compared to the Ni(OH)₂-NSs owing to its high affinity to oxygenated species. In addition, the NiS₂-NSs exhibit a long-term cyclability over 300 cycles at a current density of 1000 mA g⁻¹ with a cut-off capacity of 1000 mA h g⁻¹. Moreover, NiS₂-NSs without conducting agent exhibit an electrocatalytic activity and its LOB performance can be further maximized through addition of a redox mediator.

Original language	English
Pages (from-to)	594-601
Number of pages	8
Journal	Energy Storage Materials
Volume	24
DOIs	https://doi.org/10.1016/j.ensm.2019.06.017
Publication status	Published - 2020 Jan

Bibliographical note

Funding Information:
This work is supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT, South Korea ( 2019R1A2B5B02070203 ) and by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT, South Korea ( 2018M3D1A1058744 ).

Funding Information:
This work is supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT, South Korea (2019R1A2B5B02070203) and by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT, South Korea (2018M3D1A1058744).

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

Carbon-free
Electrocatalyst
Lithium-oxygen battery
Long-term stability
Nickel disulfide

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science
Energy Engineering and Power Technology

UN SDGs

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

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10.1016/j.ensm.2019.06.017

Cite this

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title = "Nickel disulfide nanosheet as promising cathode electrocatalyst for long-life lithium–oxygen batteries",

abstract = "Lithium–oxygen batteries (LOBs) are considered as next-generation energy storage systems owing to their high energy densities. In order to achieve high-performance LOBs, it is necessary to develop efficient electrocatalysts that exhibit reversible formation and decomposition of discharge products on the oxygen-electrode side. In this study, single-crystalline NiS2 nanosheets (NiS2-NSs) are fabricated as an efficient electrocatalyst in an oxygen-electrode for high-performance LOBs. Ni(OH)2-NSs are prepared through a hydrothermal reaction and subsequently reacted with sulfur by a solid/gas phase reaction process to form NiS2-NSs. As an electrocatalyst in an oxygen-electrode, the single-crystalline NiS2-NSs can reversibly form and decompose the discharge products during the discharging and charging processes, respectively. In particular, the NiS2-NSs more effectively decompose the discharge products compared to the Ni(OH)2-NSs owing to its high affinity to oxygenated species. In addition, the NiS2-NSs exhibit a long-term cyclability over 300 cycles at a current density of 1000 mA g−1 with a cut-off capacity of 1000 mA h g−1. Moreover, NiS2-NSs without conducting agent exhibit an electrocatalytic activity and its LOB performance can be further maximized through addition of a redox mediator.",

keywords = "Carbon-free, Electrocatalyst, Lithium-oxygen battery, Long-term stability, Nickel disulfide",

author = "Bobae Ju and Song, {Hee Jo} and Lee, {Gwang Hee} and Sung, {Myeong Chang} and Kim, {Dong Wan}",

note = "Funding Information: This work is supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT, South Korea ( 2019R1A2B5B02070203 ) and by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT, South Korea ( 2018M3D1A1058744 ). Funding Information: This work is supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT, South Korea (2019R1A2B5B02070203) and by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT, South Korea (2018M3D1A1058744). Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

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doi = "10.1016/j.ensm.2019.06.017",

language = "English",

volume = "24",

pages = "594--601",

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T1 - Nickel disulfide nanosheet as promising cathode electrocatalyst for long-life lithium–oxygen batteries

AU - Ju, Bobae

AU - Song, Hee Jo

AU - Lee, Gwang Hee

AU - Sung, Myeong Chang

AU - Kim, Dong Wan

N1 - Funding Information: This work is supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT, South Korea ( 2019R1A2B5B02070203 ) and by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT, South Korea ( 2018M3D1A1058744 ). Funding Information: This work is supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT, South Korea (2019R1A2B5B02070203) and by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT, South Korea (2018M3D1A1058744). Publisher Copyright: © 2019 Elsevier B.V.

PY - 2020/1

Y1 - 2020/1

N2 - Lithium–oxygen batteries (LOBs) are considered as next-generation energy storage systems owing to their high energy densities. In order to achieve high-performance LOBs, it is necessary to develop efficient electrocatalysts that exhibit reversible formation and decomposition of discharge products on the oxygen-electrode side. In this study, single-crystalline NiS2 nanosheets (NiS2-NSs) are fabricated as an efficient electrocatalyst in an oxygen-electrode for high-performance LOBs. Ni(OH)2-NSs are prepared through a hydrothermal reaction and subsequently reacted with sulfur by a solid/gas phase reaction process to form NiS2-NSs. As an electrocatalyst in an oxygen-electrode, the single-crystalline NiS2-NSs can reversibly form and decompose the discharge products during the discharging and charging processes, respectively. In particular, the NiS2-NSs more effectively decompose the discharge products compared to the Ni(OH)2-NSs owing to its high affinity to oxygenated species. In addition, the NiS2-NSs exhibit a long-term cyclability over 300 cycles at a current density of 1000 mA g−1 with a cut-off capacity of 1000 mA h g−1. Moreover, NiS2-NSs without conducting agent exhibit an electrocatalytic activity and its LOB performance can be further maximized through addition of a redox mediator.

AB - Lithium–oxygen batteries (LOBs) are considered as next-generation energy storage systems owing to their high energy densities. In order to achieve high-performance LOBs, it is necessary to develop efficient electrocatalysts that exhibit reversible formation and decomposition of discharge products on the oxygen-electrode side. In this study, single-crystalline NiS2 nanosheets (NiS2-NSs) are fabricated as an efficient electrocatalyst in an oxygen-electrode for high-performance LOBs. Ni(OH)2-NSs are prepared through a hydrothermal reaction and subsequently reacted with sulfur by a solid/gas phase reaction process to form NiS2-NSs. As an electrocatalyst in an oxygen-electrode, the single-crystalline NiS2-NSs can reversibly form and decompose the discharge products during the discharging and charging processes, respectively. In particular, the NiS2-NSs more effectively decompose the discharge products compared to the Ni(OH)2-NSs owing to its high affinity to oxygenated species. In addition, the NiS2-NSs exhibit a long-term cyclability over 300 cycles at a current density of 1000 mA g−1 with a cut-off capacity of 1000 mA h g−1. Moreover, NiS2-NSs without conducting agent exhibit an electrocatalytic activity and its LOB performance can be further maximized through addition of a redox mediator.

KW - Carbon-free

KW - Electrocatalyst

KW - Lithium-oxygen battery

KW - Long-term stability

KW - Nickel disulfide

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U2 - 10.1016/j.ensm.2019.06.017

DO - 10.1016/j.ensm.2019.06.017

M3 - Article

AN - SCOPUS:85067652525

SN - 2405-8297

VL - 24

SP - 594

EP - 601

JO - Energy Storage Materials

JF - Energy Storage Materials

ER -

Nickel disulfide nanosheet as promising cathode electrocatalyst for long-life lithium–oxygen batteries

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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