Temperature dependence of hard carbon performance in sodium half-cells with 1 M NaClO4 in EC/DEC electrolyte
Temperature dependence of hard carbon performance in sodium half-cells with 1 M NaClO4 in EC/DEC electrolyte
In recent years, sodium-ion batteries (SIBs) have attracted much attention as an alternative to lithium-ion batteries. Hard carbon (HC) is a well-studied anode material for SIBs, however, the performance as a function of temperature is less established. To investigate temperature dependence of the performance of HC, sodium half-cells with a common NaClO4-based electrolyte were tested at temperatures from 10 to 80 °C. Capacity after 20 cycles at 100 mA g-1 current varied from 90 mA h g-1 at 10 °C to 270 mA h g-1 at 60 °C. Increased temperature significantly improves the HC rate capability, with 120 mA h g-1 capacity found at 60 °C with 500 mA g-1 current. Stability was high at moderate temperature with 220 mA h g-1 capacity remaining after 200 cycles at 40 °C with a current of 100 mA g-1.
anode, hard carbon, impedance, Na-ion battery, thermal dependence
Liu, Bowen
432d1550-1946-452b-aa84-2a80963cafbf
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Razmus, Weronika O.
33898418-324e-4351-b5f3-c2fe2b6eff96
Wills, Richard G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c
1 September 2022
Liu, Bowen
432d1550-1946-452b-aa84-2a80963cafbf
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Razmus, Weronika O.
33898418-324e-4351-b5f3-c2fe2b6eff96
Wills, Richard G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c
Liu, Bowen, Hector, Andrew L., Razmus, Weronika O. and Wills, Richard G.A.
(2022)
Temperature dependence of hard carbon performance in sodium half-cells with 1 M NaClO4 in EC/DEC electrolyte.
Batteries, 8 (9), [108].
(doi:10.3390/batteries8090108).
Abstract
In recent years, sodium-ion batteries (SIBs) have attracted much attention as an alternative to lithium-ion batteries. Hard carbon (HC) is a well-studied anode material for SIBs, however, the performance as a function of temperature is less established. To investigate temperature dependence of the performance of HC, sodium half-cells with a common NaClO4-based electrolyte were tested at temperatures from 10 to 80 °C. Capacity after 20 cycles at 100 mA g-1 current varied from 90 mA h g-1 at 10 °C to 270 mA h g-1 at 60 °C. Increased temperature significantly improves the HC rate capability, with 120 mA h g-1 capacity found at 60 °C with 500 mA g-1 current. Stability was high at moderate temperature with 220 mA h g-1 capacity remaining after 200 cycles at 40 °C with a current of 100 mA g-1.
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Accepted/In Press date: 22 August 2022
Published date: 1 September 2022
Additional Information:
Funding Information: the authors thank EPSRC for funding the Smartlab diffractometer under EP/K00509x/1 and EP/K009877/1.
Keywords:
anode, hard carbon, impedance, Na-ion battery, thermal dependence
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Local EPrints ID: 470056
URI: http://eprints.soton.ac.uk/id/eprint/470056
ISSN: 2313-0105
PURE UUID: 6219f66c-9024-4dcc-ad56-d41625509141
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Date deposited: 30 Sep 2022 17:13
Last modified: 17 Mar 2024 02:57
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Author:
Bowen Liu
Author:
Weronika O. Razmus
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