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Synthesis and electrochemical properties of Ni doped spinel LiNi (subx)Mn (sub2-x)O(sub)4 (0 ≤ x ≤ 0.5) cathode materials for Li-Ion battery

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dc.contributor.author Kebede, Mesfin A
dc.contributor.author Kunjuzwa, N
dc.contributor.author Ozoemena, KI
dc.contributor.author Mathe, Mahlanyane K
dc.date.accessioned 2013-10-23T12:14:14Z
dc.date.available 2013-10-23T12:14:14Z
dc.date.issued 2012-10
dc.identifier.citation Kebede, M.A, Kunjuzwa, N, Ozoemena, K.I and Mathe, M.K. 2012. Synthesis and electrochemical properties of Ni doped spinel LiNi (subx)Mn (sub2-x)O(sub)4 (0 ≤ x ≤ 0.5) cathode materials for Li-Ion battery. In: Emerging Materials and Processes for Energy Conversion and Storage "Electrochemical Society Transactions", Honolulu, Hawaii, USA, 7-12 October 2012 en_US
dc.identifier.uri http://ecst.ecsdl.org/content/50/40/1.full.pdf+html
dc.identifier.uri http://hdl.handle.net/10204/7002
dc.description Emerging Materials and Processes for Energy Conversion and Storage "Electrochemical Society Transactions", Honolulu, Hawaii, USA, 7-12 October 2012. Published in The Society for Solid-State and Electrochemical Science and Technology. Abstract only attached. en_US
dc.description.abstract Spherical pristine LiMn(sub2)O(sub4) and Ni doped LiNixMn(sub2-x)O(sub)4 (x=0.1, 0.2, 0.3, 0.4, 0.5) cathode materials for lithium ion battery with high first cycle discharge capacity and excellent cycle performance were synthesized using the solution-combustion technique. XRD analysis revealed peak shift towards higher angle and lattice shrink as a result of Ni doping. CSAFM result confirms LiN(subi0.5)Mn(sub1.5)O(sub)4 provides higher current of 10nA than pristine LiMn(sub2)O(sub4) of 0.05nA. The EIS result displays that small Ni content (x=0.1, 0.2) doping reduced the impedances of pristine LiMn(sub2)O(sub4). The composition LiN(subi0.1)Mn(sub1.9)O(sub)4 exhibits higher capacity and better cycleability than other Ni content compositions. Charge/discharge cycling result shows that Ni substitution substantially improved the capacity retention of LiMn(sub2)O(sub4). All Ni doped LiNixMn(sub2-x)O(sub)4 (x= 0.1, 0.2, 0.3, 0.4, 0.5) compositions are able to retain 99% of their respective first cycle discharge capacities, whereas LiMn(sub2)O(sub)4 retains only 60% of its first cycle discharge capacity of 122 mAh/g after 50 cycles. en_US
dc.language.iso en en_US
dc.publisher The Society for Solid-State and Electrochemical Science and Technology en_US
dc.relation.ispartofseries Workflow;11480
dc.subject LiNixMn(sub2)-xO(sub4) en_US
dc.subject Lithium ion battery en_US
dc.subject Solution-combustion en_US
dc.title Synthesis and electrochemical properties of Ni doped spinel LiNi (subx)Mn (sub2-x)O(sub)4 (0 ≤ x ≤ 0.5) cathode materials for Li-Ion battery en_US
dc.type Conference Presentation en_US
dc.identifier.apacitation Kebede, M. A., Kunjuzwa, N., Ozoemena, K., & Mathe, M. K. (2012). Synthesis and electrochemical properties of Ni doped spinel LiNi (subx)Mn (sub2-x)O(sub)4 (0 ≤ x ≤ 0.5) cathode materials for Li-Ion battery. The Society for Solid-State and Electrochemical Science and Technology. http://hdl.handle.net/10204/7002 en_ZA
dc.identifier.chicagocitation Kebede, Mesfin A, N Kunjuzwa, KI Ozoemena, and Mahlanyane K Mathe. "Synthesis and electrochemical properties of Ni doped spinel LiNi (subx)Mn (sub2-x)O(sub)4 (0 ≤ x ≤ 0.5) cathode materials for Li-Ion battery." (2012): http://hdl.handle.net/10204/7002 en_ZA
dc.identifier.vancouvercitation Kebede MA, Kunjuzwa N, Ozoemena K, Mathe MK, Synthesis and electrochemical properties of Ni doped spinel LiNi (subx)Mn (sub2-x)O(sub)4 (0 ≤ x ≤ 0.5) cathode materials for Li-Ion battery; The Society for Solid-State and Electrochemical Science and Technology; 2012. http://hdl.handle.net/10204/7002 . en_ZA
dc.identifier.ris TY - Conference Presentation AU - Kebede, Mesfin A AU - Kunjuzwa, N AU - Ozoemena, KI AU - Mathe, Mahlanyane K AB - Spherical pristine LiMn(sub2)O(sub4) and Ni doped LiNixMn(sub2-x)O(sub)4 (x=0.1, 0.2, 0.3, 0.4, 0.5) cathode materials for lithium ion battery with high first cycle discharge capacity and excellent cycle performance were synthesized using the solution-combustion technique. XRD analysis revealed peak shift towards higher angle and lattice shrink as a result of Ni doping. CSAFM result confirms LiN(subi0.5)Mn(sub1.5)O(sub)4 provides higher current of 10nA than pristine LiMn(sub2)O(sub4) of 0.05nA. The EIS result displays that small Ni content (x=0.1, 0.2) doping reduced the impedances of pristine LiMn(sub2)O(sub4). The composition LiN(subi0.1)Mn(sub1.9)O(sub)4 exhibits higher capacity and better cycleability than other Ni content compositions. Charge/discharge cycling result shows that Ni substitution substantially improved the capacity retention of LiMn(sub2)O(sub4). All Ni doped LiNixMn(sub2-x)O(sub)4 (x= 0.1, 0.2, 0.3, 0.4, 0.5) compositions are able to retain 99% of their respective first cycle discharge capacities, whereas LiMn(sub2)O(sub)4 retains only 60% of its first cycle discharge capacity of 122 mAh/g after 50 cycles. DA - 2012-10 DB - ResearchSpace DP - CSIR KW - LiNixMn(sub2)-xO(sub4) KW - Lithium ion battery KW - Solution-combustion LK - https://researchspace.csir.co.za PY - 2012 T1 - Synthesis and electrochemical properties of Ni doped spinel LiNi (subx)Mn (sub2-x)O(sub)4 (0 ≤ x ≤ 0.5) cathode materials for Li-Ion battery TI - Synthesis and electrochemical properties of Ni doped spinel LiNi (subx)Mn (sub2-x)O(sub)4 (0 ≤ x ≤ 0.5) cathode materials for Li-Ion battery UR - http://hdl.handle.net/10204/7002 ER - en_ZA


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