Structure and effect of diamagnetism on manganese lithium phosphate glass to cathode materials application
| Autor: | Santi Maensiri, Yingyot Poo-arporn, Pichitchai Butnoi, Narong Chanlek, Wipada Senanon, Prayoon Songsiriritthigul, Supree Pinitsoontorn, Pinit Kidkhunthod, Pongtanawat Khemthong |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
XAS Coordination number Analytical chemistry chemistry.chemical_element 02 engineering and technology Manganese 010402 general chemistry 01 natural sciences Paramagnetism Magnetization Oxidation state General Materials Science Materials of engineering and construction. Mechanics of materials Extended X-ray absorption fine structure Manganese lithium phosphate glass 021001 nanoscience & nanotechnology XANES 0104 chemical sciences EXAFS chemistry Diamagnetism TA401-492 0210 nano-technology |
| Zdroj: | Progress in Natural Science: Materials International, Vol 31, Iss 3, Pp 420-427 (2021) |
| ISSN: | 1002-0071 |
| Popis: | 1-x(Li2O–2P2O5)-xMnO2 glasses where x = 0.2, 0.3 and 0.4 mol%, respectively, were synthesized by melted-quenching 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 Mn3+ 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 Å and 1.766–1.774 Å, 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 ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect