一维薄水铝石制备高Na-β″-Al_2O_3相相含量电解质材料
|
摘要
以水热合成的一维γ-AlOOH为原料,采用固相反应法制备了具有高Na-β"-Al_2O_3相相含量的电解质材料,研究了前驱体形貌及烧结制度对Na-β"-Al_2O_3材料的影响。结果表明:γ-AlOOH经预烧后的产物形貌为一维棒状形貌,良好的拓扑继承γ-AlOOH前驱体的一维形貌,经高温固相反应形成Na-β"-Al_2O_3相后无法进一步继承前驱体的一维结构,得到具有层片状结构的Na-β"-Al_2O_3材料。预烧可以提高β"-Al_2O_3相含量,当预烧温度为1 100℃时,β"-Al_2O_3相含量达95.7%,300℃时的电导率为0.017 S?cm~(–1)。
The solid electrolyte material with a high Na-β"-Al_2O_3 phase content was prepared by a solid-state reaction method with one-dimensionalγ-AlOOH as a raw material.The effects of precursor morphology and sintering regime on the Na-β"-Al_2O_3 materials were investigated.The results show thatγ-AlOOH pre-sintered at different temperatures can topologically inherit the one-dimensional rod morphology of the precursor.Na-β"-Al_2O_3 powder synthesized by solid-state reaction cannot further inherit the one-dimensional morphology of the precursor.It is found that plate-like structures are obtained in all the Na-β"-Al_2O_3 materials.The calcination ofγ-Al OOH can increase the content ofβ"-Al_2O_3 phase.The content ofβ"-Al_2O_3 phase is 95.7%,and the conductivity at300℃is 0.017 S·cm~(–1) when the calcination temperature is 1 100℃.
The solid electrolyte material with a high Na-β"-Al_2O_3 phase content was prepared by a solid-state reaction method with one-dimensionalγ-AlOOH as a raw material.The effects of precursor morphology and sintering regime on the Na-β"-Al_2O_3 materials were investigated.The results show thatγ-AlOOH pre-sintered at different temperatures can topologically inherit the one-dimensional rod morphology of the precursor.Na-β"-Al_2O_3 powder synthesized by solid-state reaction cannot further inherit the one-dimensional morphology of the precursor.It is found that plate-like structures are obtained in all the Na-β"-Al_2O_3 materials.The calcination ofγ-Al OOH can increase the content ofβ"-Al_2O_3 phase.The content ofβ"-Al_2O_3 phase is 95.7%,and the conductivity at300℃is 0.017 S·cm~(–1) when the calcination temperature is 1 100℃.
引文
[1]MENICTAS C.Advances in Batteries for Medium and Large-Scale Energy Storage[M].Oxford:Elsevier,2015:1-5.
[2]HUESO K B,PALOMARES V,ARMAND M,et al.Challenges and perspectives on high and intermediate-temperature sodium batteries[J].Nano Res,2017,10(12):4082-4114.
[3]KIM I,PARK J Y,CHANG H K,et al.A room temperature Na/Sbattery using aβ″-alumina solid electrolyte separator,etraethylene glycol dimethyl ether electrolyte,and a S/C composite cathode[J].JPower Sources,2016,301:332-337.
[4]SUBASRI R,NAFE H.An alternative approach to characterize the equilibrium in a biphasicα-Al2O3/Na-β-alumina mixture as a function of sodium activity[J].Electr Acta,2003,48(23):3535-3540.
[5]KIM J S,AHN H J,KIM I P,et al.The short-term cycling propertiesof Na/PVdF/S battery at ambient temperature[J].Solid State Elect,2008,12(7-8):861-865.
[6]FANJAT N,LUCAZEAU G,BATES J,et al.Dynamics of Na+in a single crystal of Na-β''-Al2O3[J].Physica B,1989,156-157:342-345.
[7]Barison S,Fasolin S,MortalòC,et al.Effect of precursors onβ-alumina electrolyte preparation[J].J Eur Ceram Soc,2015.35(7):2099-2107.
[8]MALI A,PETRIC A.Fabrication of a thin walled beta″-alumina electrolyte cells[J].J Power Sources,2011,196(11):5191-5196.
[9]KOGANEI K,OYAMA T,INADA M,et al.C-axis orientedβ″-alumina ceramics with anisotropic ionic conductivity prepared by spark plasma sintering[J].Solid State Ionics,2014,267:22-26.
[10]YOUNGBLOOD G E,VIRKAR A V,CANNON W R,et al.Sintering processes and heat treatment schedules for conductive,lithia-stabalized beta double prime-Al2O3[J].Am Ceram Soc Bull,1977,56(2):206-210,212.
[2]HUESO K B,PALOMARES V,ARMAND M,et al.Challenges and perspectives on high and intermediate-temperature sodium batteries[J].Nano Res,2017,10(12):4082-4114.
[3]KIM I,PARK J Y,CHANG H K,et al.A room temperature Na/Sbattery using aβ″-alumina solid electrolyte separator,etraethylene glycol dimethyl ether electrolyte,and a S/C composite cathode[J].JPower Sources,2016,301:332-337.
[4]SUBASRI R,NAFE H.An alternative approach to characterize the equilibrium in a biphasicα-Al2O3/Na-β-alumina mixture as a function of sodium activity[J].Electr Acta,2003,48(23):3535-3540.
[5]KIM J S,AHN H J,KIM I P,et al.The short-term cycling propertiesof Na/PVdF/S battery at ambient temperature[J].Solid State Elect,2008,12(7-8):861-865.
[6]FANJAT N,LUCAZEAU G,BATES J,et al.Dynamics of Na+in a single crystal of Na-β''-Al2O3[J].Physica B,1989,156-157:342-345.
[7]Barison S,Fasolin S,MortalòC,et al.Effect of precursors onβ-alumina electrolyte preparation[J].J Eur Ceram Soc,2015.35(7):2099-2107.
[8]MALI A,PETRIC A.Fabrication of a thin walled beta″-alumina electrolyte cells[J].J Power Sources,2011,196(11):5191-5196.
[9]KOGANEI K,OYAMA T,INADA M,et al.C-axis orientedβ″-alumina ceramics with anisotropic ionic conductivity prepared by spark plasma sintering[J].Solid State Ionics,2014,267:22-26.
[10]YOUNGBLOOD G E,VIRKAR A V,CANNON W R,et al.Sintering processes and heat treatment schedules for conductive,lithia-stabalized beta double prime-Al2O3[J].Am Ceram Soc Bull,1977,56(2):206-210,212.