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Iturrondobeitia, Amaia,Goñ,i, Aintzane,Gil de Muro, Izaskun,Lezama, Luis,Kim, Chunjoong,Doeff, Marca,Cabana, Jordi,Rojo, Teó,filo American Chemical Society 2015 Inorganic Chemistry Vol.54 No.6
<P>Four LiMn<SUB>0.8</SUB>Fe<SUB>0.1</SUB>M<SUB>0.1</SUB>PO<SUB>4</SUB>/C (M = Fe, Co, Ni, Cu) cathode materials have been synthesized via a freeze-drying method. The samples have been characterized by powder X-ray diffraction, transmission electron microscopy, magnetic susceptibility, and electrochemical measurements. The composition and effective insertion of the transition-metal substituents in LiMnPO<SUB>4</SUB> have been corroborated by elemental analysis, the evolution of the crystallographic parameters, and the magnetic properties. The morphological characterization of the composites has demonstrated that the phosphate nanoparticles are enclosed in a matrix of amorphous carbon. Among them, LiMn<SUB>0.8</SUB>Fe<SUB>0.1</SUB>Ni<SUB>0.1</SUB>PO<SUB>4</SUB>/C is the most promising cathode material, providing a good electrochemical performance in all aspects: high voltage and specific capacity values, excellent cyclability, and good rate capability. This result has been attributed to several factors, such as the suitable morphology of the sample, the good connection afforded by the in situ generated carbon, and the amelioration of the structural stress provided by the presence of Ni<SUP>2+</SUP> and Fe<SUP>2+</SUP> in the olivine structure.</P><P>Four nanosized LiMn<SUB>0.8</SUB>Fe<SUB>0.1</SUB>M<SUB>0.1</SUB>PO<SUB>4</SUB>/C (M = Fe, Co, Ni, Cu) cathode materials have been synthesized via a freeze-drying method. The effective insertion of the substituents in LiMnPO<SUB>4</SUB> have been corroborated by elemental analysis, the evolution of the crystallographic parameters, and the magnetic properties. LiMn<SUB>0.8</SUB>Fe<SUB>0.1</SUB>Ni<SUB>0.1</SUB>PO<SUB>4</SUB>/C is the most promising material, providing a good electrochemical performance in all aspects: high voltage and specific capacity values, excellent cyclability, and good rate capability.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/inocaj/2015/inocaj.2015.54.issue-6/ic5028306/production/images/medium/ic-2014-028306_0007.gif'></P>
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Daisy Pérez-Brito,Anuar Magaña-Alvarez,Patricia Lappe-Oliveras,Alberto Cortes-Velazquez,Claudia Torres-Calzada,Teófilo Herrera- Suarez,Alfonso Larqué-Saavedra,Raul Tapia-Tussell 한국미생물학회 2015 The journal of microbiology Vol.53 No.1
This study characterized Clavispora lusitaniae strains isolatedfrom different stages of the processing and early fermentationof a henequen (Agave fourcroydes) spirit produced inYucatan, Mexico using a molecular technique. Sixteen strainsidentified based on morphological features, obtained fromdifferent substrates, were typed molecularly. Nine differentversions of the divergent D1/D2 domain of the large-subunitribosomal DNA sequence were identified among theC. lusitaniae strains. The greatest degree of polymorphismwas found in the 90-bp structural motif of the D2 domain. The MSP-PCR technique was able to differentiate 100% ofthe isolates. This study provides significant insight into thegenetic diversity of the mycobiota present during the henequenfermentation process, especially that of C. lusitaniae,for which only a few studies in plants have been published. The applied MSP-PCR markers were very efficient in revealingpolymorphisms between isolates of this species.
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