Evaluation of the effect of precursor ratios on the electrochemical performances of binder-free NiMn-phosphate electrodes for supercapattery

Binary metal phosphate electrodes have been widely studied for energy storage applications due to the synergistic effects of two different transition elements that able to provide better conductivity and stability. Herein, the battery-type binder-free nickel-manganese phosphate (NiMn-phosphate) elec...

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Main Authors: Gerard, Ong, Ramesh, Subramaniam, Ramesh, Kasi, Numan, Arshid, Mustafa, Muhammad Norhaffis, Khalid, Mohammad, Ramesh, Singh, Tiong, S.K.
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Published: Elsevier 2024
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Online Access:http://eprints.um.edu.my/45293/
https://doi.org/10.1016/j.jcis.2024.04.101
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spelling my.um.eprints.452932024-10-07T05:01:32Z http://eprints.um.edu.my/45293/ Evaluation of the effect of precursor ratios on the electrochemical performances of binder-free NiMn-phosphate electrodes for supercapattery Gerard, Ong Ramesh, Subramaniam Ramesh, Kasi Numan, Arshid Mustafa, Muhammad Norhaffis Khalid, Mohammad Ramesh, Singh Tiong, S.K. QC Physics TJ Mechanical engineering and machinery Binary metal phosphate electrodes have been widely studied for energy storage applications due to the synergistic effects of two different transition elements that able to provide better conductivity and stability. Herein, the battery-type binder-free nickel-manganese phosphate (NiMn-phosphate) electrodes were fabricated with different Ni:Mn precursor ratios via microwave-assisted hydrothermal technique for 5 min at 90 degrees C. Overall, NiMn3P electrode (Ni:Mn = 1:3) showed an outstanding electrochemical performance, displaying the highest specific (areal) capacity at 3 A/g of 1262.4 C/g (0.44 C/cm2), and the smallest charge transfer resistance of 108.8 Omega. The enhanced performance of NiMn3P electrode can be ascribed to the fully grown amorphous nature and small-sized flake and flower structures of NiMn3P electrode material on the nickel foam (NF) surface. This configuration offered a higher number of active sites and a larger exposed area, facilitating efficient electrochemical reactions with the electrolyte. Consequently, the NiMn3P//AC electrode combination was chosen to further investigate its performance in supercapattery. The NiMn3P//AC supercapattery exhibited remarkable energy density of 105.4 Wh/kg and excellent cyclic stability with 84.7% retention after 3000 cycles. These findings underscored the superior electrochemical performance of the battery-type binder-free NiMn3P electrode, and highlight its potential for enhancing the overall performance of supercapattery. Elsevier 2024-08 Article PeerReviewed Gerard, Ong and Ramesh, Subramaniam and Ramesh, Kasi and Numan, Arshid and Mustafa, Muhammad Norhaffis and Khalid, Mohammad and Ramesh, Singh and Tiong, S.K. (2024) Evaluation of the effect of precursor ratios on the electrochemical performances of binder-free NiMn-phosphate electrodes for supercapattery. Journal of Colloid and Interface Science, 667. pp. 585-596. ISSN 0021-9797, DOI https://doi.org/10.1016/j.jcis.2024.04.101 <https://doi.org/10.1016/j.jcis.2024.04.101>. https://doi.org/10.1016/j.jcis.2024.04.101 10.1016/j.jcis.2024.04.101
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
TJ Mechanical engineering and machinery
spellingShingle QC Physics
TJ Mechanical engineering and machinery
Gerard, Ong
Ramesh, Subramaniam
Ramesh, Kasi
Numan, Arshid
Mustafa, Muhammad Norhaffis
Khalid, Mohammad
Ramesh, Singh
Tiong, S.K.
Evaluation of the effect of precursor ratios on the electrochemical performances of binder-free NiMn-phosphate electrodes for supercapattery
description Binary metal phosphate electrodes have been widely studied for energy storage applications due to the synergistic effects of two different transition elements that able to provide better conductivity and stability. Herein, the battery-type binder-free nickel-manganese phosphate (NiMn-phosphate) electrodes were fabricated with different Ni:Mn precursor ratios via microwave-assisted hydrothermal technique for 5 min at 90 degrees C. Overall, NiMn3P electrode (Ni:Mn = 1:3) showed an outstanding electrochemical performance, displaying the highest specific (areal) capacity at 3 A/g of 1262.4 C/g (0.44 C/cm2), and the smallest charge transfer resistance of 108.8 Omega. The enhanced performance of NiMn3P electrode can be ascribed to the fully grown amorphous nature and small-sized flake and flower structures of NiMn3P electrode material on the nickel foam (NF) surface. This configuration offered a higher number of active sites and a larger exposed area, facilitating efficient electrochemical reactions with the electrolyte. Consequently, the NiMn3P//AC electrode combination was chosen to further investigate its performance in supercapattery. The NiMn3P//AC supercapattery exhibited remarkable energy density of 105.4 Wh/kg and excellent cyclic stability with 84.7% retention after 3000 cycles. These findings underscored the superior electrochemical performance of the battery-type binder-free NiMn3P electrode, and highlight its potential for enhancing the overall performance of supercapattery.
format Article
author Gerard, Ong
Ramesh, Subramaniam
Ramesh, Kasi
Numan, Arshid
Mustafa, Muhammad Norhaffis
Khalid, Mohammad
Ramesh, Singh
Tiong, S.K.
author_facet Gerard, Ong
Ramesh, Subramaniam
Ramesh, Kasi
Numan, Arshid
Mustafa, Muhammad Norhaffis
Khalid, Mohammad
Ramesh, Singh
Tiong, S.K.
author_sort Gerard, Ong
title Evaluation of the effect of precursor ratios on the electrochemical performances of binder-free NiMn-phosphate electrodes for supercapattery
title_short Evaluation of the effect of precursor ratios on the electrochemical performances of binder-free NiMn-phosphate electrodes for supercapattery
title_full Evaluation of the effect of precursor ratios on the electrochemical performances of binder-free NiMn-phosphate electrodes for supercapattery
title_fullStr Evaluation of the effect of precursor ratios on the electrochemical performances of binder-free NiMn-phosphate electrodes for supercapattery
title_full_unstemmed Evaluation of the effect of precursor ratios on the electrochemical performances of binder-free NiMn-phosphate electrodes for supercapattery
title_sort evaluation of the effect of precursor ratios on the electrochemical performances of binder-free nimn-phosphate electrodes for supercapattery
publisher Elsevier
publishDate 2024
url http://eprints.um.edu.my/45293/
https://doi.org/10.1016/j.jcis.2024.04.101
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