Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials
<p dir="ltr">Developing sophisticated lithium-ion batteries with high energy and power density requires using high-voltage positive electrodes. Due to its three-dimensional lithium-ion diffusion and greater nominal operating voltage, spinel LiNi<sub>0.5</sub>Mn<sub>...
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2024
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| author | Z.A. Qureshi (18180484) |
| author2 | M.E.S. Ali (18180487) R.A. Shakoor (17017692) S. AlQaradawi (18180490) R. Kahraman (18180493) |
| author2_role | author author author author |
| author_facet | Z.A. Qureshi (18180484) M.E.S. Ali (18180487) R.A. Shakoor (17017692) S. AlQaradawi (18180490) R. Kahraman (18180493) |
| author_role | author |
| dc.creator.none.fl_str_mv | Z.A. Qureshi (18180484) M.E.S. Ali (18180487) R.A. Shakoor (17017692) S. AlQaradawi (18180490) R. Kahraman (18180493) |
| dc.date.none.fl_str_mv | 2024-02-21T03:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.ceramint.2024.02.271 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Impact_of_synergistic_interfacial_modification_on_the_electrochemical_performance_of_LiNi0_5Mn1_5O4_cathode_materials/25434814 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Chemical sciences Physical chemistry Engineering Materials engineering Electrode materials Energy storage materials Precipitation Lithium-ion batteries LiNi0.5Mn1.5O4 Microwave sintering |
| dc.title.none.fl_str_mv | Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">Developing sophisticated lithium-ion batteries with high energy and power density requires using high-voltage positive electrodes. Due to its three-dimensional lithium-ion diffusion and greater nominal operating voltage, spinel LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> has emerged as one of lithium-ion batteries' most viable cathode materials. Electrolyte breakdown, Mn dissolution, and rapid cathode-electrolyte interface (CEI) degradation in lithium-ion cells are exacerbated by the high operating voltage of LNMO. Consequently, the long-term cycling of LNMO is hampered by such adverse side effects, making the commercialization of such a battery impractical. Here, we document the enhancement in the electrochemical performance of LNMO by surface modification utilizing a combination of Al<sub>2</sub>O<sub>3</sub> coating and Graphene enveloping employing a facile wet synthesis technique. The presence of highly crystalline spherical secondary microspheres consisting of primary nanoparticles of disordered LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub>, the surface modification with Al<sub>2</sub>O<sub>3</sub>, and the subsequent graphene wrapping were all confirmed by structural and surface analysis techniques. The fabricated cells containing the enhanced cathode material (LNMO-Al-GO) were cycled at a C/10 rate for 100 cycles in a voltage window of 3.5–4.9 V, providing a specific discharge capacity of 134.7 ± 3.8 mAhg<sup>−1</sup>. Delivering a capacity retention of 97.7 ± 3.9% compared to the unmodified LNMO sample (84.7 ± 5.3%). Ex-situ XRD, Electrochemical Impedance Spectroscopy (EIS), and Differential Scanning Calorimetry (DSC) investigations reveal that the alumina coating protects the cathode by acting as a hydrogen fluoride (H.F.) scavenger and minimizes unfavorable phase formations at the CEI, inhibiting Mn<sup>3+</sup> dissolution and enhancing cyclability.</p><h2>Other Information</h2><p dir="ltr">Published in: Ceramics International<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.ceramint.2024.02.271" target="_blank">https://dx.doi.org/10.1016/j.ceramint.2024.02.271</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_65ddea561e38241681b9a7d5478ee58e |
| identifier_str_mv | 10.1016/j.ceramint.2024.02.271 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/25434814 |
| publishDate | 2024 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materialsZ.A. Qureshi (18180484)M.E.S. Ali (18180487)R.A. Shakoor (17017692)S. AlQaradawi (18180490)R. Kahraman (18180493)Chemical sciencesPhysical chemistryEngineeringMaterials engineeringElectrode materialsEnergy storage materialsPrecipitationLithium-ion batteriesLiNi0.5Mn1.5O4Microwave sintering<p dir="ltr">Developing sophisticated lithium-ion batteries with high energy and power density requires using high-voltage positive electrodes. Due to its three-dimensional lithium-ion diffusion and greater nominal operating voltage, spinel LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> has emerged as one of lithium-ion batteries' most viable cathode materials. Electrolyte breakdown, Mn dissolution, and rapid cathode-electrolyte interface (CEI) degradation in lithium-ion cells are exacerbated by the high operating voltage of LNMO. Consequently, the long-term cycling of LNMO is hampered by such adverse side effects, making the commercialization of such a battery impractical. Here, we document the enhancement in the electrochemical performance of LNMO by surface modification utilizing a combination of Al<sub>2</sub>O<sub>3</sub> coating and Graphene enveloping employing a facile wet synthesis technique. The presence of highly crystalline spherical secondary microspheres consisting of primary nanoparticles of disordered LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub>, the surface modification with Al<sub>2</sub>O<sub>3</sub>, and the subsequent graphene wrapping were all confirmed by structural and surface analysis techniques. The fabricated cells containing the enhanced cathode material (LNMO-Al-GO) were cycled at a C/10 rate for 100 cycles in a voltage window of 3.5–4.9 V, providing a specific discharge capacity of 134.7 ± 3.8 mAhg<sup>−1</sup>. Delivering a capacity retention of 97.7 ± 3.9% compared to the unmodified LNMO sample (84.7 ± 5.3%). Ex-situ XRD, Electrochemical Impedance Spectroscopy (EIS), and Differential Scanning Calorimetry (DSC) investigations reveal that the alumina coating protects the cathode by acting as a hydrogen fluoride (H.F.) scavenger and minimizes unfavorable phase formations at the CEI, inhibiting Mn<sup>3+</sup> dissolution and enhancing cyclability.</p><h2>Other Information</h2><p dir="ltr">Published in: Ceramics International<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.ceramint.2024.02.271" target="_blank">https://dx.doi.org/10.1016/j.ceramint.2024.02.271</a></p>2024-02-21T03:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.ceramint.2024.02.271https://figshare.com/articles/journal_contribution/Impact_of_synergistic_interfacial_modification_on_the_electrochemical_performance_of_LiNi0_5Mn1_5O4_cathode_materials/25434814CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/254348142024-02-21T03:00:00Z |
| spellingShingle | Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials Z.A. Qureshi (18180484) Chemical sciences Physical chemistry Engineering Materials engineering Electrode materials Energy storage materials Precipitation Lithium-ion batteries LiNi0.5Mn1.5O4 Microwave sintering |
| status_str | publishedVersion |
| title | Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials |
| title_full | Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials |
| title_fullStr | Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials |
| title_full_unstemmed | Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials |
| title_short | Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials |
| title_sort | Impact of synergistic interfacial modification on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials |
| topic | Chemical sciences Physical chemistry Engineering Materials engineering Electrode materials Energy storage materials Precipitation Lithium-ion batteries LiNi0.5Mn1.5O4 Microwave sintering |