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Two-Dimensional SnSe Nanonetworks: Growth and Evaluation for Li-Ion Battery Applications

Two-Dimensional SnSe Nanonetworks: Growth and Evaluation for Li-Ion Battery Applications
Two-Dimensional SnSe Nanonetworks: Growth and Evaluation for Li-Ion Battery Applications

Engineered two-dimensional (2D) layered materials possess unique physical properties with the potential to improve the performance and endurance of future electronic and energy devices. Here, we report the growth of complex 2D nanonetworks of crystalline tin selenide (SnSe) via liquid injection chemical vapor deposition using a single-source diselenoether precursor. Potential applications of SnSe span a wide range of technological areas, particularly in energy devices. The synthesized SnSe networks were composed of high surface area interconnected junctions of one-dimensional (1D) nanowires in a 2D plane; such complex SnSe nanonetwork structures have not previously been reported. The SnSe networks possessed an orthorhombic Pnma 62 crystal structure throughout, with the individual network branches uniformly orientated along the <011> and <01-1> directions. The width of the individual interconnected nanowire branches ranged from 120 to 250 nm with lengths ranging from 1 to 4 μm. The networks of 1D nanowires had a layer thickness of 88 ± 10 nm. A growth mechanism for the formation of these networks is proposed based on the minimization of high surface energy planes. We also highlight the potential of SnSe nanonetworks as an anode material for Li-ion batteries with galvanostatic testing showing an initial discharge capacity in excess of 1000 mAh g-1 with a 92% capacity retention after 50 cycles at a specific current of 100 mA g-1.

2D materials, chemical vapor deposition, layered materials, Li-ion battery, nanowire networks, SnSe
2574-0962
6602-6610
Davitt, Fionán
5c1eb290-47d9-46c6-bcd1-8050b55bea55
Stokes, Killian
5b03e157-8091-47ec-8bfd-24b209d6ca39
Collins, Timothy W.
83c024b9-4471-4b4c-af5b-ede385a6dfcd
Roldan-Gutierrez, Manuel
fd8e9fab-c206-4802-8219-2e5fa71a5c45
Robinson, Fred
8fc7b408-097f-4550-b189-5b6e3a49bf93
Geaney, Hugh
4457c984-5195-44e2-be47-e271bf1605ba
Biswas, Subhajit
843e3bab-57ca-4141-b30c-6d5a37f66bf5
Chang, Shery L.Y.
a7c181ef-05dd-4842-93d2-3f63920c67f0
Ryan, Kevin M.
6ba6fa88-0951-44ee-a51d-0b5d00ddb8d6
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Holmes, Justin D.
ecb7b5b3-fe4b-45e2-b85b-0dd7a3967a4c
Davitt, Fionán
5c1eb290-47d9-46c6-bcd1-8050b55bea55
Stokes, Killian
5b03e157-8091-47ec-8bfd-24b209d6ca39
Collins, Timothy W.
83c024b9-4471-4b4c-af5b-ede385a6dfcd
Roldan-Gutierrez, Manuel
fd8e9fab-c206-4802-8219-2e5fa71a5c45
Robinson, Fred
8fc7b408-097f-4550-b189-5b6e3a49bf93
Geaney, Hugh
4457c984-5195-44e2-be47-e271bf1605ba
Biswas, Subhajit
843e3bab-57ca-4141-b30c-6d5a37f66bf5
Chang, Shery L.Y.
a7c181ef-05dd-4842-93d2-3f63920c67f0
Ryan, Kevin M.
6ba6fa88-0951-44ee-a51d-0b5d00ddb8d6
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Holmes, Justin D.
ecb7b5b3-fe4b-45e2-b85b-0dd7a3967a4c

Davitt, Fionán, Stokes, Killian, Collins, Timothy W., Roldan-Gutierrez, Manuel, Robinson, Fred, Geaney, Hugh, Biswas, Subhajit, Chang, Shery L.Y., Ryan, Kevin M., Reid, Gillian and Holmes, Justin D. (2020) Two-Dimensional SnSe Nanonetworks: Growth and Evaluation for Li-Ion Battery Applications. ACS Applied Energy Materials, 3 (7), 6602-6610. (doi:10.1021/acsaem.0c00776).

Record type: Article

Abstract

Engineered two-dimensional (2D) layered materials possess unique physical properties with the potential to improve the performance and endurance of future electronic and energy devices. Here, we report the growth of complex 2D nanonetworks of crystalline tin selenide (SnSe) via liquid injection chemical vapor deposition using a single-source diselenoether precursor. Potential applications of SnSe span a wide range of technological areas, particularly in energy devices. The synthesized SnSe networks were composed of high surface area interconnected junctions of one-dimensional (1D) nanowires in a 2D plane; such complex SnSe nanonetwork structures have not previously been reported. The SnSe networks possessed an orthorhombic Pnma 62 crystal structure throughout, with the individual network branches uniformly orientated along the <011> and <01-1> directions. The width of the individual interconnected nanowire branches ranged from 120 to 250 nm with lengths ranging from 1 to 4 μm. The networks of 1D nanowires had a layer thickness of 88 ± 10 nm. A growth mechanism for the formation of these networks is proposed based on the minimization of high surface energy planes. We also highlight the potential of SnSe nanonetworks as an anode material for Li-ion batteries with galvanostatic testing showing an initial discharge capacity in excess of 1000 mAh g-1 with a 92% capacity retention after 50 cycles at a specific current of 100 mA g-1.

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Published date: 27 July 2020
Keywords: 2D materials, chemical vapor deposition, layered materials, Li-ion battery, nanowire networks, SnSe

Identifiers

Local EPrints ID: 444328
URI: http://eprints.soton.ac.uk/id/eprint/444328
ISSN: 2574-0962
PURE UUID: 0aecdc8e-c26f-46c9-8921-16d026c230b6
ORCID for Gillian Reid: ORCID iD orcid.org/0000-0001-5349-3468

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Date deposited: 13 Oct 2020 16:39
Last modified: 18 Feb 2021 16:41

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Contributors

Author: Fionán Davitt
Author: Killian Stokes
Author: Timothy W. Collins
Author: Manuel Roldan-Gutierrez
Author: Fred Robinson
Author: Hugh Geaney
Author: Subhajit Biswas
Author: Shery L.Y. Chang
Author: Kevin M. Ryan
Author: Gillian Reid ORCID iD
Author: Justin D. Holmes

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