,Low-temperature synthesis of apatite-type La9.33Ge6O26 as electrolytes with high conductivity

来源 :中国物理B(英文版) | 被引量 : 0次 | 上传用户:liuhao0760
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In the present study, high-quality apatite-type La9.33Ge6O26 powders are successfully synthesized by a facile molten-salt synthesis method (MSSM) at low temperatures, using LiCl, LiCl/NaCl mixture (mass ratio 1:1) as molten salt, respectively. Experimental results indicate that the optimal mass ratio between reactant and molten salt is 1:2, and LiCl/NaCl mixed molten-salt is more beneficial for forming high-quality La9.33Ge6O26 powders than LiCl individual molten-salt. Comparing with the conventional solid-state reaction method (SSRM), the synthesis temperature of apatite-type La9.33Ge6O26 powders using the MSSM decreases more than 350 ?C, which can effectively avoid Ge loss in the preparation process of precursor powders. Furthermore, the powders obtained by the MSSM are homogeneous, non-agglomerated and well crystallized, which are very favorable for gaining dense pellets in the premise of avoiding Ge loss. On the basis of high-quality precursor powders, the dense and pure ceramic pellets of La9.33Ge6O26 are gained at a low temperature of 1100 ?C for 2 h, which exhibit higher conductivities (σ850 ?C(LiCl) =2.3 × 10?2 S·cm?1,σ850 ?C(LiCl/NaCl)=4.9 × 10?2 S·cm?1) and lower activation energies (Ea(LiCl)=1.02 eV, Ea(LiCl/NaCl)=0.99 eV) than that synthesized by the SSRM.
其他文献
In this paper, the preparation of 0.08BiGaO3-0.90BaTiO3-0.02LiNbO3 is investigated at pressure 3.8 GPa and tem-perature 1100–1200?C. Experimental results indic
Based on the Tersoff potential, molecular dynamics simulations have been performed to investigate the kinetic co-efficients and growth velocities of Si (100), (
In this paper,a theoretical model to analyze the mode coupling induced by heat,when the fiber amplifier works at high power configuration,is proposed.The model
The isovalent iron chalcogenides,FeSe0.sTe0.5 and FeS,share similar lattice structures but behave very differently in superconducting properties.We study the un
轮状病毒是世界范围内引起婴幼儿病毒性腹泻的主要病原体,尤其是发展中国家,每年受轮状病毒危害的婴幼儿数量非常巨大.目前,对轮状病毒感染最有效的预防和控制措施,是发展有
SBA-15 (mesoporous SiO2) is used to stabilize and transfer F?in the NH4BF4 CVD reaction for the first time, and a large-scale crystalline h-BN phase can be prep
Magneto transport of carriers with a spin-dependent gap in a ferromagnetic-gated bilayer of graphene is investigated. We focus on the effect of an energy gap in
该研究针对日光温室土壤盐渍化日益严重的现状,以所征集到的西瓜砧木为试材,筛选适宜设施栽培的耐盐西瓜砧木,并对其耐盐机理作了探讨.研究结果表明:1.各砧木品种耐盐性差异
柑橘是世界上重要的经济作物,亦是我国南方的一种极为重要的果树。探讨柑橘抗逆性的生理生化机理,进而提出抗性栽培的技术措施,增强抵御自然灾害的能力,是提高我国柑橘产量、品质