2D nanosheets from fool's gold by LPE: High performance lithium-ion battery anodes made from stone

Harneet Kaur; Ruiyuan Tian; Ahin Roy; Mark McCrystall; Ross Smith; Dominik Valter Horvath; Valeria Nicolosi; Jonathan N. Coleman

doi:10.1016/j.flatc.2021.100295

2D nanosheets from fool's gold by LPE: High performance lithium-ion battery anodes made from stone

Harneet Kaur, Ruiyuan Tian, Ahin Roy, Mark McCrystall, Ross Smith, Dominik Valter Horvath, Valeria Nicolosi, Jonathan N. Coleman

Trinity College Dublin

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

7 Scopus citations

Abstract

Recently, it has been shown that it is possible to apply liquid-phase exfoliation to non-layered materials, yielding quasi-2D nanosheets. It has been proposed that even a slight bonding anisotropy in the starting crystal will lead to a platelet-like geometry, albeit with low aspect ratio. While this development opens the way to many previously unexplored 2D materials, a particularly interesting class of crystals for exfoliation are natural-occurring mineral ores due to their diversity and abundance. Here we describe the liquid-phase exfoliation of the natural mineral, pyrite, also known as fool's gold. The exfoliation process yields highly crystalline, low aspect ratio nanosheets with stoichiometry FeS₂, with all impurity and non-platelet material removed during a two-step centrifugation protocol. These 2D pyrite flakes can be fabricated into lithium-ion battery anodes which show remarkable capacities of >1200 mAh g⁻¹.

Original language	English
Article number	100295
Journal	FlatChem
Volume	30
DOIs	https://doi.org/10.1016/j.flatc.2021.100295
State	Published - Nov 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 Elsevier B.V.

Funding

We acknowledge the European Research Council Advanced Grant (FUTURE-PRINT) and the European Union under Graphene Flagship cores 2 & 3 (grant agreements 785219 and 881603). We have also received support from the Science Foundation Ireland (SFI) funded centre AMBER (SFI/12/RC/2278) and availed of the facilities of the SFI-funded AML and ARM labs. MMcC thanks the Irish research council for support.

Funders	Funder number
Horizon 2020 Framework Programme
European Commission	881603, 785219
European Commission
Science Foundation Ireland	SFI/12/RC/2278

Keywords

Iron-disulfide
Liquid-phase exfoliation
Lithium-ion battery
Nanosheets
Non-layered material
Pyrite mineral

UN SDGs

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

Access to Document

10.1016/j.flatc.2021.100295

Cite this

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title = "2D nanosheets from fool's gold by LPE: High performance lithium-ion battery anodes made from stone",

abstract = "Recently, it has been shown that it is possible to apply liquid-phase exfoliation to non-layered materials, yielding quasi-2D nanosheets. It has been proposed that even a slight bonding anisotropy in the starting crystal will lead to a platelet-like geometry, albeit with low aspect ratio. While this development opens the way to many previously unexplored 2D materials, a particularly interesting class of crystals for exfoliation are natural-occurring mineral ores due to their diversity and abundance. Here we describe the liquid-phase exfoliation of the natural mineral, pyrite, also known as fool's gold. The exfoliation process yields highly crystalline, low aspect ratio nanosheets with stoichiometry FeS2, with all impurity and non-platelet material removed during a two-step centrifugation protocol. These 2D pyrite flakes can be fabricated into lithium-ion battery anodes which show remarkable capacities of >1200 mAh g−1.",

keywords = "Iron-disulfide, Liquid-phase exfoliation, Lithium-ion battery, Nanosheets, Non-layered material, Pyrite mineral",

author = "Harneet Kaur and Ruiyuan Tian and Ahin Roy and Mark McCrystall and Ross Smith and Horvath, {Dominik Valter} and Valeria Nicolosi and Coleman, {Jonathan N.}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = nov,

doi = "10.1016/j.flatc.2021.100295",

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AU - Kaur, Harneet

AU - Tian, Ruiyuan

AU - Roy, Ahin

AU - McCrystall, Mark

AU - Smith, Ross

AU - Horvath, Dominik Valter

AU - Nicolosi, Valeria

AU - Coleman, Jonathan N.

PY - 2021/11

Y1 - 2021/11

N2 - Recently, it has been shown that it is possible to apply liquid-phase exfoliation to non-layered materials, yielding quasi-2D nanosheets. It has been proposed that even a slight bonding anisotropy in the starting crystal will lead to a platelet-like geometry, albeit with low aspect ratio. While this development opens the way to many previously unexplored 2D materials, a particularly interesting class of crystals for exfoliation are natural-occurring mineral ores due to their diversity and abundance. Here we describe the liquid-phase exfoliation of the natural mineral, pyrite, also known as fool's gold. The exfoliation process yields highly crystalline, low aspect ratio nanosheets with stoichiometry FeS2, with all impurity and non-platelet material removed during a two-step centrifugation protocol. These 2D pyrite flakes can be fabricated into lithium-ion battery anodes which show remarkable capacities of >1200 mAh g−1.

AB - Recently, it has been shown that it is possible to apply liquid-phase exfoliation to non-layered materials, yielding quasi-2D nanosheets. It has been proposed that even a slight bonding anisotropy in the starting crystal will lead to a platelet-like geometry, albeit with low aspect ratio. While this development opens the way to many previously unexplored 2D materials, a particularly interesting class of crystals for exfoliation are natural-occurring mineral ores due to their diversity and abundance. Here we describe the liquid-phase exfoliation of the natural mineral, pyrite, also known as fool's gold. The exfoliation process yields highly crystalline, low aspect ratio nanosheets with stoichiometry FeS2, with all impurity and non-platelet material removed during a two-step centrifugation protocol. These 2D pyrite flakes can be fabricated into lithium-ion battery anodes which show remarkable capacities of >1200 mAh g−1.

KW - Iron-disulfide

KW - Liquid-phase exfoliation

KW - Lithium-ion battery

KW - Nanosheets

KW - Non-layered material

KW - Pyrite mineral

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2D nanosheets from fool's gold by LPE: High performance lithium-ion battery anodes made from stone

Abstract

Bibliographical note

Funding

Keywords

UN SDGs

Access to Document

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