Investigations on KAl(SO4)2•12H2O: A Candidate α-Alum Material for Energy Storage Applications

被引：0
|
作者：
Souemti, Ahmed [1 ]
Ben Mouhammed, Mouhammed [2 ]
Lozano-Gorrin, Antonio Diego [3 ]
Chehimi, Dalila Ben Hassen [1 ]
机构：
[1] Univ Carthage, Fac Sci Bizerte, LR05ES09, Lab Applicat Chim Ressources & Subst Nat & Enviro, Bizerte 7021, Tunisia
[2] Univ Carthage, Fac Sci Bizerte, LR Ressource Mat & Ecosyst Mat Lamellaire & Nanom, Bizerte 7021, Tunisia
[3] Univ La Laguna, Dept Quim, Ave Astrofis,Francisco Sanchez S-N, Tenerife 38200, Spain
来源：
CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY | 2022年 / 5卷 / 03期
关键词：
alpha-Alum; Thermal dehydration; Linear regression fitting; Activation energy; Ionic conduction; THERMAL-ANALYSIS; KINETIC-ANALYSIS; SINGLE-CRYSTAL; BATTERIES; EFFICIENT; MG; NA;
D O I：
10.1007/s42250-022-00336-1
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this work, we have successfully synthesized a pure phase of alpha-alum KAl(SO4)(2)center dot 12H(2)O, denoted as KAlSD by the slow evaporation method, to be useful as a material in the storage energy domain. XRD analysis and IR spectroscopy confirmed the high pure cubic phase. Thermal dehydration results done by DTA-TG analysis confirmed a complete dehydration process around 520 K. Kinetic analysis using the linear regression analysis indicated that different models can explain each dehydration stage. The conduction mechanism process was followed by complex impedance spectroscopy (CIS). Conductivity within the material is thermally activated and occurs by the migration of mobile cations into the host lattice with activation energy equal to 1.08 eV. KAlSD is an ionic semiconductor that can be selected as good electrode material in the energy storage applications.
引用
收藏
页码：575 / 587
页数：13
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