Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes
LiMn<sub>2</sub>O<sub>4</sub> (LMO) spinel cathode materials suffer from severe degradation at elevated temperatures because of Mn dissolution. In this research, monobasic sodium phosphate (NaH<sub>2</sub>PO<sub>4</sub>, P2) is examined as an electroly...
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MDPI AG
2021-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/16/4670 |
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| author | Minsang Jo Seong-Hyo Park Hochun Lee |
| author_facet | Minsang Jo Seong-Hyo Park Hochun Lee |
| author_sort | Minsang Jo |
| collection | DOAJ |
| description | LiMn<sub>2</sub>O<sub>4</sub> (LMO) spinel cathode materials suffer from severe degradation at elevated temperatures because of Mn dissolution. In this research, monobasic sodium phosphate (NaH<sub>2</sub>PO<sub>4</sub>, P2) is examined as an electrolyte additive to mitigate Mn dissolution; thus, the thermal stability of the LMO cathode material is improved. The P2 additive considerably improves the cyclability and storage performances of LMO/graphite and LMO/LMO symmetric cells at 60 °C. We explain that P2 suppresses the hydrofluoric acid content in the electrolyte and forms a protective cathode electrolyte interphase layer, which mitigates the Mn dissolution behavior of the LMO cathode material. Considering its beneficial role, the P2 additive is a useful additive for spinel LMO cathodes that suffer from severe Mn dissolution. |
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| format | Article |
| id | doaj.art-3616ad5ae25046cf8110a998c8469d5d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T08:37:53Z |
| publishDate | 2021-08-01 |
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| series | Materials |
| spelling | doaj.art-3616ad5ae25046cf8110a998c8469d5d2023-11-22T08:31:04ZengMDPI AGMaterials1996-19442021-08-011416467010.3390/ma14164670Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide CathodesMinsang Jo0Seong-Hyo Park1Hochun Lee2Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, KoreaDepartment of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, KoreaDepartment of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, KoreaLiMn<sub>2</sub>O<sub>4</sub> (LMO) spinel cathode materials suffer from severe degradation at elevated temperatures because of Mn dissolution. In this research, monobasic sodium phosphate (NaH<sub>2</sub>PO<sub>4</sub>, P2) is examined as an electrolyte additive to mitigate Mn dissolution; thus, the thermal stability of the LMO cathode material is improved. The P2 additive considerably improves the cyclability and storage performances of LMO/graphite and LMO/LMO symmetric cells at 60 °C. We explain that P2 suppresses the hydrofluoric acid content in the electrolyte and forms a protective cathode electrolyte interphase layer, which mitigates the Mn dissolution behavior of the LMO cathode material. Considering its beneficial role, the P2 additive is a useful additive for spinel LMO cathodes that suffer from severe Mn dissolution.https://www.mdpi.com/1996-1944/14/16/4670lithium-ion batteryspinel lithium manganese oxidemanganese dissolutionsodium phosphateelectrolyte additivethermal stability |
| spellingShingle | Minsang Jo Seong-Hyo Park Hochun Lee Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes Materials lithium-ion battery spinel lithium manganese oxide manganese dissolution sodium phosphate electrolyte additive thermal stability |
| title | Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes |
| title_full | Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes |
| title_fullStr | Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes |
| title_full_unstemmed | Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes |
| title_short | Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes |
| title_sort | effects of a sodium phosphate electrolyte additive on elevated temperature performance of spinel lithium manganese oxide cathodes |
| topic | lithium-ion battery spinel lithium manganese oxide manganese dissolution sodium phosphate electrolyte additive thermal stability |
| url | https://www.mdpi.com/1996-1944/14/16/4670 |
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