| Designing Novel Sulphate-based Ceramic Materials as
Insertion Host Compounds for Secondary Batteries |
Debasmita Dwibedi and Prabeer Barpanda
pages : 191-194
DOI : 10.1080/0371750X.2015.1127183 |
| Abstract |
| Rechargeable batteries have propelled the wireless revolution and automobiles market over the past 25 years.
Developing better batteries with improved energy density demands unveiling of new cathode ceramic materials with
suitable diffusion channels and open framework structure. In this pursuit of achieving higher energy density, one
approach is to realize enhanced redox voltage of insertion of ceramic compounds. This can be accomplished by
incorporating highly electronegative anions in the cathode ceramics. Building on this idea, recently various sulphatebased
compounds have been reported as high voltage cathode materials. The current article highlights the use of
sulphate (SO4) based cathodes to realize the highest ever Fe3+/Fe2+ redox potentials in Li-ion batteries (LiFeSO4F
fluorosulphate: 3.9 V vs Li/Li+) and Na-ion batteries (Na2Fe2(SO4)3 polysulphate: 3.8 V vs Na/Na+). These sulphatebased
cathode ceramic compounds pave way for newer avenues to design better batteries for future applications. |
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