490 15 1613 2 9950 document 1613 Evaluation of the effect of site substitution of Pr doping in the Lithium garnet system Li5La3Nb2O12.zip application/zip ff4fb28a3c37dfe374aaa5d81a3ae64f MD5 267852749 2020-06-01 13:25:33 http://edata.bham.ac.uk/490/1/Evaluation%20of%20the%20effect%20of%20site%20substitution%20of%20Pr%20doping%20in%20the%20Lithium%20garnet%20system%20Li5La3Nb2O12.zip 490 1 1 application/zip archive public cc_by_4

Evaluation of the effect of site substitution of Pr doping in the Lithium garnet system Li5La3Nb2O12.zip

data archive 205 disk0/00/00/04/90 2020-06-03 15:02:50 2020-06-03 15:18:29 2020-06-03 15:02:50 data_collection show Stockham Mark MPS846@student.bham.ac.uk 0000-0001-7254-0266 Dong Bo B.Dong@bham.ac.uk Li Yongliang Y.Li.1@bham.ac.uk Ding Yulong y.ding@bham.ac.uk Slater Peter P.R.SLATER@bham.ac.uk 0000-0002-6280-7673 10col_ephy Li ion conducting garnets have been attracting considerable interest for use as the electrolyte in all solid-state batteries, due to their high ionic conductivity and wide electrochemical stability window. Consequently, there have been a number of doping studies aimed at optimising the conductivity, focusing on both doping in Li7La3Zr2O12 and Li5La3(Nb/Ta)2O12 systems. In this paper, we report a detailed study of Pr doping in Li5La3Nb2O12, and show that this is a rare example of an ambi-site dopant, being able to be doped onto either the La or Nb site. Interestingly the resultant Pr oxidation state is determined by the site substitution, with oxidation states of 3+ for the La site, and 4+ for the Nb site. While the conductivity is essentially unchanged for the La site substitution, Pr4+ substitution on the Nb site leads to a large increase in the conductivity associated with the increase in Li content (Li5+xLa3Nb2-xPrxO12) up to 0.56 mScm-1 (at 50˚C) for x=0.8. Overall, this work highlights the flexibility of these garnet materials to doping, and suggests that further consideration of site substitution be considered for other dopants. 2020-06-03 published University of Birmingham 10.25500/edata.bham.00000490 Dataset research-data@contacts.bham.ac.uk School of Chemistry School of Chemical Engineering epsrc other University of Birmingham EP/R024006/1 yes yes yes TRUE Author Stockham Mark mps846@student.bham.ac.uk pub https://pubs.rsc.org/en/content/articlelanding/2020/dt/d0dt01497d IsSupplementTo en