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晶体结构对CoMoO电池型超级电容器电极性能的影响。

The influence of crystal structures on the performance of CoMoO battery-type supercapacitor electrodes.

作者信息

Yang Kunli, Cline Joseph P, Kim Bohyeon, Kiely Christopher J, McIntosh Steven

机构信息

Department of Chemical and Biomolecular Engineering, Lehigh University Bethlehem PA 18015 USA

Department of Materials Science and Engineering, Lehigh University Bethlehem PA 18105 USA.

出版信息

RSC Adv. 2024 Mar 11;14(12):8251-8259. doi: 10.1039/d3ra05878f. eCollection 2024 Mar 6.

DOI:10.1039/d3ra05878f
PMID:38469183
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10925852/
Abstract

CoMoO is a promising battery-type supercapacitor electrode material that can offer relatively high storage capacity and cycle stability. In this work, we investigate the role of the crystalline phase of CoMoO in determining these performance parameters. The hydrate phase of CoMoO was synthesized on a nickel foam substrate hydrothermal reaction with subsequent annealing under an inert atmosphere leading to the formation of the β-phase CoMoO. Similar nanoplate morphologies were observed in all of the samples. The hydrate-phase CoMoO demonstrates larger specific capacity than the annealed β-phase CoMoO. Besides, the samples synthesized at lower temperatures have better rate capability than the sample annealed at higher temperatures. However, the hydrate phase had worse long-term stability compared to the β-phase samples.

摘要

CoMoO是一种很有前景的电池型超级电容器电极材料，它能够提供相对较高的存储容量和循环稳定性。在这项工作中，我们研究了CoMoO的晶相在确定这些性能参数方面的作用。通过在泡沫镍基底上进行水热反应，随后在惰性气氛下退火，合成了CoMoO的水合物相，从而形成了β相CoMoO。在所有样品中都观察到了类似的纳米片形态。水合物相CoMoO表现出比退火后的β相CoMoO更大的比容量。此外，在较低温度下合成的样品比在较高温度下退火的样品具有更好的倍率性能。然而，与β相样品相比，水合物相的长期稳定性较差。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/dce959aa7abe/d3ra05878f-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/cdc590b429e6/d3ra05878f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/652db732b26e/d3ra05878f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/da544b73f96d/d3ra05878f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/5cd7390a31f9/d3ra05878f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/da55c0167b45/d3ra05878f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/0fd7cea92346/d3ra05878f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/90eb1c19843f/d3ra05878f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/321885b6c5f2/d3ra05878f-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/0a1786aff216/d3ra05878f-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/dce959aa7abe/d3ra05878f-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/cdc590b429e6/d3ra05878f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/652db732b26e/d3ra05878f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/da544b73f96d/d3ra05878f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/5cd7390a31f9/d3ra05878f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/da55c0167b45/d3ra05878f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/0fd7cea92346/d3ra05878f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/90eb1c19843f/d3ra05878f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/321885b6c5f2/d3ra05878f-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/0a1786aff216/d3ra05878f-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b032/10925852/dce959aa7abe/d3ra05878f-f10.jpg

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