Highly Stable Free‐standing Cobalt Niobate with Orthorhombic Structure as Anode Material for Li‐ion Batteries
Abstract The current and future energy demands require high‐performance batteries with stable long‐term cycling, high capacities, and fast‐charging capabilities. In recent years, niobate compounds have gained significant research interests due to their attractive properties suited for battery applic...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2024-02-01
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| Series: | ChemElectroChem |
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| Online Access: | https://doi.org/10.1002/celc.202300627 |
| _version_ | 1797201025458765824 |
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| author | Yannis De Luna Dr. Shaobo Ma Dr. Guoxing Li Prof. Dr. Nasr Bensalah |
| author_facet | Yannis De Luna Dr. Shaobo Ma Dr. Guoxing Li Prof. Dr. Nasr Bensalah |
| author_sort | Yannis De Luna |
| collection | DOAJ |
| description | Abstract The current and future energy demands require high‐performance batteries with stable long‐term cycling, high capacities, and fast‐charging capabilities. In recent years, niobate compounds have gained significant research interests due to their attractive properties suited for battery applications. In this work, cobalt niobate, CoNb2O6, was synthesized via a simple and scalable solid‐state mechanochemical method through high‐energy ball milling, mechanical treatment (pellet formation), and calcination at 900 °C. The resulting product is a pure, columbite‐type (orthorhombic) cobalt niobate based on XRD findings. Electrochemical testing in a half‐cell against Li/Li+ of the as‐prepared free‐standing cobalt niobate anode material revealed a highly reversible process of lithiation (discharge) and delithiation (charge), with increasing pseudocapacitive behavior at higher scan rates. At 0.1 A g−1, the observed initial discharge capacity was about 900 mAh g−1. The synthesized CoNb anode material displayed an impressive rate performance, which involved increased stability at elevated current densities. During prolonged cycling tests, the anode material displayed extremely stable cycling vs Li/Li+, even at 2 A g−1, delivering a specific capacity of 700 mAh g−1 in the initial cycle, followed by a relatively constant capacity of 150 mAh g−1 throughout the majority of 5000 cycles completed. Post‐mortem analysis illustrated the reversibility of the cobalt niobate anode material and confirmed the growth and partial breakdown of the SEI film. With the results obtained from this work, cobalt niobate is full of potential as an anode material for Li‐ion battery applications. |
| first_indexed | 2024-03-08T00:19:37Z |
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| id | doaj.art-0f0f43343ccc4e37b71fc66967f929f4 |
| institution | Directory Open Access Journal |
| issn | 2196-0216 |
| language | English |
| last_indexed | 2024-04-24T07:40:59Z |
| publishDate | 2024-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemElectroChem |
| spelling | doaj.art-0f0f43343ccc4e37b71fc66967f929f42024-04-19T13:10:31ZengWiley-VCHChemElectroChem2196-02162024-02-01114n/an/a10.1002/celc.202300627Highly Stable Free‐standing Cobalt Niobate with Orthorhombic Structure as Anode Material for Li‐ion BatteriesYannis De Luna0Dr. Shaobo Ma1Dr. Guoxing Li2Prof. Dr. Nasr Bensalah3Program of Chemistry, Department of Chemistry and Earth Sciences College of Arts and Sciences Qatar University PO box 2713 Doha QatarShandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion Institute of Frontier and Interdisciplinary Science Shandong University Qingdao 266237 P. R. ChinaShandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion Institute of Frontier and Interdisciplinary Science Shandong University Qingdao 266237 P. R. ChinaProgram of Chemistry, Department of Chemistry and Earth Sciences College of Arts and Sciences Qatar University PO box 2713 Doha QatarAbstract The current and future energy demands require high‐performance batteries with stable long‐term cycling, high capacities, and fast‐charging capabilities. In recent years, niobate compounds have gained significant research interests due to their attractive properties suited for battery applications. In this work, cobalt niobate, CoNb2O6, was synthesized via a simple and scalable solid‐state mechanochemical method through high‐energy ball milling, mechanical treatment (pellet formation), and calcination at 900 °C. The resulting product is a pure, columbite‐type (orthorhombic) cobalt niobate based on XRD findings. Electrochemical testing in a half‐cell against Li/Li+ of the as‐prepared free‐standing cobalt niobate anode material revealed a highly reversible process of lithiation (discharge) and delithiation (charge), with increasing pseudocapacitive behavior at higher scan rates. At 0.1 A g−1, the observed initial discharge capacity was about 900 mAh g−1. The synthesized CoNb anode material displayed an impressive rate performance, which involved increased stability at elevated current densities. During prolonged cycling tests, the anode material displayed extremely stable cycling vs Li/Li+, even at 2 A g−1, delivering a specific capacity of 700 mAh g−1 in the initial cycle, followed by a relatively constant capacity of 150 mAh g−1 throughout the majority of 5000 cycles completed. Post‐mortem analysis illustrated the reversibility of the cobalt niobate anode material and confirmed the growth and partial breakdown of the SEI film. With the results obtained from this work, cobalt niobate is full of potential as an anode material for Li‐ion battery applications.https://doi.org/10.1002/celc.202300627cobalt niobate anodecolumbite-typefree-standingintercalationLi-ion batteries |
| spellingShingle | Yannis De Luna Dr. Shaobo Ma Dr. Guoxing Li Prof. Dr. Nasr Bensalah Highly Stable Free‐standing Cobalt Niobate with Orthorhombic Structure as Anode Material for Li‐ion Batteries ChemElectroChem cobalt niobate anode columbite-type free-standing intercalation Li-ion batteries |
| title | Highly Stable Free‐standing Cobalt Niobate with Orthorhombic Structure as Anode Material for Li‐ion Batteries |
| title_full | Highly Stable Free‐standing Cobalt Niobate with Orthorhombic Structure as Anode Material for Li‐ion Batteries |
| title_fullStr | Highly Stable Free‐standing Cobalt Niobate with Orthorhombic Structure as Anode Material for Li‐ion Batteries |
| title_full_unstemmed | Highly Stable Free‐standing Cobalt Niobate with Orthorhombic Structure as Anode Material for Li‐ion Batteries |
| title_short | Highly Stable Free‐standing Cobalt Niobate with Orthorhombic Structure as Anode Material for Li‐ion Batteries |
| title_sort | highly stable free standing cobalt niobate with orthorhombic structure as anode material for li ion batteries |
| topic | cobalt niobate anode columbite-type free-standing intercalation Li-ion batteries |
| url | https://doi.org/10.1002/celc.202300627 |
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