Improving the Performance of Lithium Manganese Phosphate Through Divalent Cation Substitution

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Highly crystalline samples of LiMnPO{sub 4} and its analogs with partial substitution of Mn by divalent Mg, Cu, Zn, and Ni were prepared by hydrothermal synthesis and characterized by x-ray diffraction and infrared spectroscopy. Chemical oxidation produced two-phase mixtures of the initial phases LiMn{sub (1-y)}M{sub y}PO{sub 4} and the delithiated forms, Li{sub y}Mn{sub (1-y)}M{sub y}PO{sub 4}, all with the olivine structure. The extent of oxidation depended upon the quantity of oxidizing agent used and on the identity of the substituent ions. Mg, Ni and Cu were found to increase the level of delithation relative to that in pure LiMnPO{sub 4}. ... continued below

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Chen, Guoying & Richardson, Thomas J. March 3, 2008.

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Highly crystalline samples of LiMnPO{sub 4} and its analogs with partial substitution of Mn by divalent Mg, Cu, Zn, and Ni were prepared by hydrothermal synthesis and characterized by x-ray diffraction and infrared spectroscopy. Chemical oxidation produced two-phase mixtures of the initial phases LiMn{sub (1-y)}M{sub y}PO{sub 4} and the delithiated forms, Li{sub y}Mn{sub (1-y)}M{sub y}PO{sub 4}, all with the olivine structure. The extent of oxidation depended upon the quantity of oxidizing agent used and on the identity of the substituent ions. Mg, Ni and Cu were found to increase the level of delithation relative to that in pure LiMnPO{sub 4}. Mg was also shown to reduce the tendency of the oxidized phase to absorb water.

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  • Journal Name: Electrochemical Society

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  • Report No.: LBNL-3601E
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1149/1.2971169 | External Link
  • Office of Scientific & Technical Information Report Number: 984964
  • Archival Resource Key: ark:/67531/metadc1014574

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  • March 3, 2008

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 17, 2017, 6:21 p.m.

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Chen, Guoying & Richardson, Thomas J. Improving the Performance of Lithium Manganese Phosphate Through Divalent Cation Substitution, article, March 3, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc1014574/: accessed July 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.