The solid-state chelation synthesis of LiNi1/3Co1/3Mn1/3O2 as a cathode material for lithium-ion batteries
A facile solid-state chelation method using citric acid as the solid chelant was investigated for the synthesis of layered LiNi1/3Co1/3Mn1/3O2 as a cathode material for rechargeable lithium-ion batteries. The reaction was promoted by high-energy ball milling. During the synthesis, PVP was used as an...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Royal Society of Chemistry
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/45446 |
| _version_ | 1848757286315491328 |
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| author | Jiang, X. Sha, Y. Cai, R. Shao, Zongping |
| author_facet | Jiang, X. Sha, Y. Cai, R. Shao, Zongping |
| author_sort | Jiang, X. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A facile solid-state chelation method using citric acid as the solid chelant was investigated for the synthesis of layered LiNi1/3Co1/3Mn1/3O2 as a cathode material for rechargeable lithium-ion batteries. The reaction was promoted by high-energy ball milling. During the synthesis, PVP was used as an additive. For comparison, LiNi1/3Co1/3Mn1/3O2 was also synthesized by a conventional sol–gel method using citric acid as the chelant. The as-prepared samples were characterized by TG-DSC, XRD, FESEM, BET specific surface area and galvanostatic charge–discharge tests. Based on the XPS, TEM and ED results, the sample synthesized by the solid-state chelation method with the PVP as an additive and subsequent calcination at 900 °C for 12 h in air was well indexed to a pure-phase hexagonal α-NaFeO2 structure with the highest crystallinity. The resulting sample showed an initial discharge capacity of 173 mA h g−1 in the potential range of 2.6–4.5 V and at a rate of 0.1 C, higher than that of the sample prepared by the same method without the use of a PVP additive during the synthesis (146 mA h g−1). Moreover, the electrochemical results at different current rates and the cycle performance for 100 cycles at 0.5 C indicated that the sample prepared by the solid-state chelation method exhibited better rate capability and cyclic stability than that prepared by the conventional sol–gel method. This phenomenon promises solid-state chelation as a new universal method for the preparation of functional materials. |
| first_indexed | 2025-11-14T09:25:41Z |
| format | Journal Article |
| id | curtin-20.500.11937-45446 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:25:41Z |
| publishDate | 2015 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-454462017-09-13T14:22:50Z The solid-state chelation synthesis of LiNi1/3Co1/3Mn1/3O2 as a cathode material for lithium-ion batteries Jiang, X. Sha, Y. Cai, R. Shao, Zongping A facile solid-state chelation method using citric acid as the solid chelant was investigated for the synthesis of layered LiNi1/3Co1/3Mn1/3O2 as a cathode material for rechargeable lithium-ion batteries. The reaction was promoted by high-energy ball milling. During the synthesis, PVP was used as an additive. For comparison, LiNi1/3Co1/3Mn1/3O2 was also synthesized by a conventional sol–gel method using citric acid as the chelant. The as-prepared samples were characterized by TG-DSC, XRD, FESEM, BET specific surface area and galvanostatic charge–discharge tests. Based on the XPS, TEM and ED results, the sample synthesized by the solid-state chelation method with the PVP as an additive and subsequent calcination at 900 °C for 12 h in air was well indexed to a pure-phase hexagonal α-NaFeO2 structure with the highest crystallinity. The resulting sample showed an initial discharge capacity of 173 mA h g−1 in the potential range of 2.6–4.5 V and at a rate of 0.1 C, higher than that of the sample prepared by the same method without the use of a PVP additive during the synthesis (146 mA h g−1). Moreover, the electrochemical results at different current rates and the cycle performance for 100 cycles at 0.5 C indicated that the sample prepared by the solid-state chelation method exhibited better rate capability and cyclic stability than that prepared by the conventional sol–gel method. This phenomenon promises solid-state chelation as a new universal method for the preparation of functional materials. 2015 Journal Article http://hdl.handle.net/20.500.11937/45446 10.1039/c5ta01236h Royal Society of Chemistry restricted |
| spellingShingle | Jiang, X. Sha, Y. Cai, R. Shao, Zongping The solid-state chelation synthesis of LiNi1/3Co1/3Mn1/3O2 as a cathode material for lithium-ion batteries |
| title | The solid-state chelation synthesis of LiNi1/3Co1/3Mn1/3O2 as a cathode material for lithium-ion batteries |
| title_full | The solid-state chelation synthesis of LiNi1/3Co1/3Mn1/3O2 as a cathode material for lithium-ion batteries |
| title_fullStr | The solid-state chelation synthesis of LiNi1/3Co1/3Mn1/3O2 as a cathode material for lithium-ion batteries |
| title_full_unstemmed | The solid-state chelation synthesis of LiNi1/3Co1/3Mn1/3O2 as a cathode material for lithium-ion batteries |
| title_short | The solid-state chelation synthesis of LiNi1/3Co1/3Mn1/3O2 as a cathode material for lithium-ion batteries |
| title_sort | solid-state chelation synthesis of lini1/3co1/3mn1/3o2 as a cathode material for lithium-ion batteries |
| url | http://hdl.handle.net/20.500.11937/45446 |