Structure and effect of diamagnetism on manganese lithium phosphate glass to cathode materials application  

作　　者：Pichitchai Butnoi Wipada Senanon Narong Chanlek Yingyot Poo-arporna Supree Pinitsoontorn Santi Maensiri Prayoon Songsiriritthigul Pongtanawat Khemthong Pinit Kidkhunthod 

机构地区：[1]Synchrotron Light Research Institute(Public Organization),111 University Avenue,Muang District,Nakhon Ratchasima,30000,Thailand [2]Insitute of Nanomaterials Research and Innovation for Energy(IN-RIE),Khon Kaen University,Khon Kaen,40002,Thailand [3]Research Network NANOTEC-SUT on Advanced Nanomaterials and Characterization,School of Physics,Institute of Science,Suranaree University of Technology,Nakhon Ratchasima,30000,Thailand [4]School of Physics,Institute of Science,Suranaree University of Technology,Nakhon Ratchasima,30000,Thailand [5]Center of Excellent on Advanced Functional Materials,Suranaree University of Technology,Nakhon Ratchasima,30000,Thailand [6]National Nanotechnology Center,National Science and Technology Development Agency,Pathumthani,12120,Thailand

出　　处：《Progress in Natural Science:Materials International》2021年第3期420-427,共8页自然科学进展·国际材料（英文版）

基　　金：the Synchrotron Light Research Institute(Public Organization);Research network NANOTEC-SUT on Advanced Nanomaterials and characterization for financial support;。

摘　　要：1-x(Li_(2)O-2 P_(2)O_(5))-xMnO_(2)glasses where x=0.2,0.3 and 0.4 mol%,respectively,were synthesized by meltedquenching method.The Mn and P oxidation states and local structures around Mn and P-ions including Mn-O and P-O bonding distances and coordination numbers have been studied via X-ray absorption near edge structure(XANES)and extended X-ray absorption fine structure(EXAFS),respectively.XANES results exhibit a coexistence of oxidation state of Mn2+and Mn^(3+)with a mean value of 2.82.Moreover,Mn and P K-edge EXAFS show the Mn-O and P-O bonding distances of approximately 2.083-2.094 A and 1.766-1.774 A,respectively.A paramagnetism was found for all Mn-P glasses.Additionally,the coercive field(Hc)and remnant magnetization(Mr)increased with increasing Mn contents.However,the low specific capacitances are seriously obtained(<40 F g^(-1))suggesting the effect of natural diamagnetism of lithium phosphate based-glass unlike the borate based-glasses which originally exhibit paramagnetism.

关 键 词：XAS XANES EXAFS Manganese lithium phosphate glass DIAMAGNETISM 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ171.1[化学工程—玻璃工业]