Cover Page February-2019-Advanced Materials Letters

Advanced Materials Letters

Volume 10, Issue 2, Pages 85-90, February 2019
About Cover

The cover photo describing the crystal structure of Na5YSi4O12 with glass-ceramic Na+ superionic conductors. As discussed by Toshinori Okura, these glass-ceramic conductors have great potential and are one of the most important groups of solid electrolytes, not only because of its practical usefulness for advanced batteries but also for its three-dimensional ionic conducting nature.


Development of Na+ superionic conducting Na5YSi4O12-type glass-ceramics

Toshinori Okura*

Department of Applied Chemistry, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano, Hachioji-shi, Tokyo 192-0015, Japan

Adv. Mater. Lett., 2019, 10 (2), pp 85-90

DOI: 10.5185/amlett.2019.1684

Publication Date (Web): Dec 19, 2018

E-mail: okura@cc.kogakuin.ac.jp

Abstract

This review article describes a series of studies on the glass-ceramic Na+ superionic conductors with Na5YSi4O12 (N5)-type structure synthesized using the composition formula of Na3+3x-yR1-xPySi3-yO9 for a variety of rare earth elements, R, under the appropriate composition parameters. Recent researches on structural control of the Na+ superionic conducting glass-ceramics are also introduced. The optimum conditions for crystallization were discussed with reference to the conduction properties and the preparation of crack-free N5-type glass-ceramics. The effects of Si substitution with the various elements with tetrahedral oxygen coordination structure and Y substitution with the various R elements were also discussed on ionic conductivity of N5-type glass-ceramics, respectively. 

Keywords

Superionic conductor, glass-ceramics, crystallization, Na5YSi4O12-type, microstructure.

Current Issue

Smart Healthcare pulls up Clouds for Virtual Medicine


Selecting the correct electromagnetic inspection technology 


Influence of railway-track grinding on the track material condition and tribological behaviour


Micromechanical Fatigue Modelling of the Size Effect in Micro-Scale 316L Stainless Steel Specimens


Functionalization of Graphene and Reduced Graphene Oxide in Different Matrices


Effect of parasitic polytypes on ballistic electron transport in chemical vapor deposition grown 6H-SiC epitaxial layers


Photomemristive heterostructures based on two-dimensional crystals


Architecture - behaviour - properties relationship in Star-shaped MPA-PMMA and MPA-PS hyper-branched copolymers


Graphene and doped graphene: A comparative DFT study


Ag2CO3 / Magnetic reduced graphene oxide nanocomposite as advanced visible light photocatalytic hybrid materials for efficient degradation of azo dye


Optimization of acid hydrolysis process for the preparation cellulose nanofibrils


Alginate/k-carrageenan and alginate/gelatin composite hydrogel beads for controlled drug release of curcumin


Study of microstructure and mechanical properties of friction stir welded ferrite-martensite DP700 steel


Previous issues

9th Anniversary of Advanced Materials Letters: Progress and Opportunities

Coating - A potent method to enhance electrochemical performance of Li(NixMnyCoz)O2 cathodes for Li-ion batteries

Analysis of machined electron beam treated Ti6Al4V-ELI implant surfaces

Bottom-up design of hydrogels through click-chemistry modification of magnetic nanoparticles

Visualization of mechanical loads with semiconductor nanocrystals 

Room temperature growth of ultra porous hot-wire deposited tantalum pentoxide

Substrate integrated circular cavity resonator filled with nano-fibrillated cellulose for humidity detection

Oxygen vacancy filament-based resistive switching in Hf0.5Zr0.5O2 thin films for non-volatile memory

Innovative silicon compatible materials for light emitting devices  

Graphene micromesh for transparent conductive films application 

Applications of nano-scale Cirrus DopantTM to improve existing coatings

Chitin nanofibrils in renewable materials for packaging and personal care applications

Synthesis of AgNPs embedded double network nanocomposite hydrogels having high swelling and anti-bacterial characteristics

Upcoming Congress

Knowledge Experience at Sea TM