Electrochemical fluorination of perovskite type BaFeO2.5

被引：45

作者：

Clemens, Oliver ^{[1
,2
,3
]}

Rongeat, Carine ^{[2
]}

Reddy, M. Anji ^{[2
,4
]}

Giehr, Andreas ^{[1
,2
]}

Fichtner, Maximilian ^{[2
,4
]}

Hahn, Horst ^{[1
,2
,4
]}

机构：

[1] Tech Univ Darmstadt, Joint Res Lab Nanomat, D-64287 Darmstadt, Germany

[2] Karlsruhe Inst Technol, Inst Nanotechnol, D-76344 Eggenstein Leopoldshafen, Germany

[3] Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England

[4] Helmholtz Inst Ulm Electrochem Energy Storage HIU, D-89081 Ulm, Germany

来源：

DALTON TRANSACTIONS | 2014年 / 43卷 / 42期

关键词：

LOW-TEMPERATURE FLUORINATION; OXIDE FLUORIDE BAFEO2F; MAGNETIC CHARACTERIZATION; NEUTRON-DIFFRACTION; PHASES; OXYFLUORIDES; LA1-XSRXFEO3-XFX; INSERTION; LA2CUO4; REAGENT;

D O I：

10.1039/c4dt02485k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Here we report on the first el'ectrochemical fluorination exemplarily performed on perovskite type BaFe02.5. A cell setup of the type BaFe02.5 II La0.9Ba0.1F2.9 II MFx (with MFx being MgF2 and CeF3) was used to perform the reaction, charging the cell up to voltages of about 4 V. Formation of a compound of approximate composition BaFeO25F similar to(0.5) was observed, in agreement with diffraction studies of the independently performed chemically fluorinated compound using F-2 gas, and also possessing a capacity which is close to the theoretical capacity of the material. This new method gives an alternative towards the use of highly reactive and toxic F-2 gas, and provides potential in adjusting the chemical potential for oxidative chemical fluorinations.

引用

页码：15771 / 15778

页数：8

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