TY  - CONF
AU  - Senćanski, Jelena V.
AU  - Nikolić, Nenad
AU  - Stojković, Ivana
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2532
AB  - To protect the environment from potentially hazardous components from commercial Li-ion
batteries (i.e., contain toxic and flammable electrolytes as well as Li is uneconomical and a rare earth
metal), a viable alternative need to be found for the components of these batteries. Thus, our focus is
on replacement of an organic electrolyte using an aqueous one. Additionally, the work also examines
the replacement of Li with Zn as production of Zn-based cathode material is more economical compared
to Li and less toxic. Due to occurrence of the Ian Teller effect in ZnMn2O4, Mn3+ ions are partially
replaced with Cr3+ ions to diminish this phenomenon and to obtain a higher capacity. Namely, due to
the Ian-Teller distortion, not all cations of Zn2+ ions may intercalate in the crystal lattice sites. When the
Ian-Teller effect lowers, more Zn2+ ions may intercalate into sites; thus, a higher capacity may be
obtained. The materials ZnMn2O4 and ZnCr0.15Mn1.85O4 were synthesized by glycine nitrate combustion
method. The materials were characterized by XRPD, SEM, EDS and cyclic voltammetry. The aqueous
solutions of ZnCl2 were used as electrolytes as potentially more ecological alternatives compared to the
organic ones already commercially used. The cathode capacities obtained for the ZnMn2O4 under 5 mV
s-1 and 20 mV s-1 ranged from 17.7 mA h g-1 to 6.9 mA h g-1. The cathode capacities obtained for
ZnCr0.15Mn1.85O4 under 5mV s-1 and 20 mV s-1 ranged from 86.3 mA h g-1 and 24.6 mA h g-1,
respectively. Over the intercalation and deintercalation process of the Zn2+ ions into the
ZnCr0.15Mn1.85O4, a release of oxygen occurred. The stable capacity obtained for both rates (5 mV s-1
and 20 mV s-1) indicates that the ZnCr0.15Mn1.85O4 material is applicable for both rates used. Further
examination of the ZnMn2O4 material must be conducted in terms of increasing the capacity through its
doping with other ions or its use in an aqueous solution of other salts.
PB  - University of Belgrade - Faculty of Physical Chemistry, Belgrade, Serbia
C3  - COIN2022 Contemporary Batteries and Supercapacitors, International Symposium Belgrade 2022
T1  - A Comparison of the Capacities of ZnMn2O4 and ZnCr0.15Mn1.85O4 in Aqueous Media
SP  - 46
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2532
ER  - 

@conference{
author = "Senćanski, Jelena V. and Nikolić, Nenad and Stojković, Ivana",
year = "2022",
abstract = "To protect the environment from potentially hazardous components from commercial Li-ion
batteries (i.e., contain toxic and flammable electrolytes as well as Li is uneconomical and a rare earth
metal), a viable alternative need to be found for the components of these batteries. Thus, our focus is
on replacement of an organic electrolyte using an aqueous one. Additionally, the work also examines
the replacement of Li with Zn as production of Zn-based cathode material is more economical compared
to Li and less toxic. Due to occurrence of the Ian Teller effect in ZnMn2O4, Mn3+ ions are partially
replaced with Cr3+ ions to diminish this phenomenon and to obtain a higher capacity. Namely, due to
the Ian-Teller distortion, not all cations of Zn2+ ions may intercalate in the crystal lattice sites. When the
Ian-Teller effect lowers, more Zn2+ ions may intercalate into sites; thus, a higher capacity may be
obtained. The materials ZnMn2O4 and ZnCr0.15Mn1.85O4 were synthesized by glycine nitrate combustion
method. The materials were characterized by XRPD, SEM, EDS and cyclic voltammetry. The aqueous
solutions of ZnCl2 were used as electrolytes as potentially more ecological alternatives compared to the
organic ones already commercially used. The cathode capacities obtained for the ZnMn2O4 under 5 mV
s-1 and 20 mV s-1 ranged from 17.7 mA h g-1 to 6.9 mA h g-1. The cathode capacities obtained for
ZnCr0.15Mn1.85O4 under 5mV s-1 and 20 mV s-1 ranged from 86.3 mA h g-1 and 24.6 mA h g-1,
respectively. Over the intercalation and deintercalation process of the Zn2+ ions into the
ZnCr0.15Mn1.85O4, a release of oxygen occurred. The stable capacity obtained for both rates (5 mV s-1
and 20 mV s-1) indicates that the ZnCr0.15Mn1.85O4 material is applicable for both rates used. Further
examination of the ZnMn2O4 material must be conducted in terms of increasing the capacity through its
doping with other ions or its use in an aqueous solution of other salts.",
publisher = "University of Belgrade - Faculty of Physical Chemistry, Belgrade, Serbia",
journal = "COIN2022 Contemporary Batteries and Supercapacitors, International Symposium Belgrade 2022",
title = "A Comparison of the Capacities of ZnMn2O4 and ZnCr0.15Mn1.85O4 in Aqueous Media",
pages = "46",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2532"
}

Senćanski, J. V., Nikolić, N.,& Stojković, I.. (2022). A Comparison of the Capacities of ZnMn2O4 and ZnCr0.15Mn1.85O4 in Aqueous Media. in COIN2022 Contemporary Batteries and Supercapacitors, International Symposium Belgrade 2022
University of Belgrade - Faculty of Physical Chemistry, Belgrade, Serbia., 46.
https://hdl.handle.net/21.15107/rcub_rimsi_2532

Senćanski JV, Nikolić N, Stojković I. A Comparison of the Capacities of ZnMn2O4 and ZnCr0.15Mn1.85O4 in Aqueous Media. in COIN2022 Contemporary Batteries and Supercapacitors, International Symposium Belgrade 2022. 2022;:46.
https://hdl.handle.net/21.15107/rcub_rimsi_2532 .

Senćanski, Jelena V., Nikolić, Nenad, Stojković, Ivana, "A Comparison of the Capacities of ZnMn2O4 and ZnCr0.15Mn1.85O4 in Aqueous Media" in COIN2022 Contemporary Batteries and Supercapacitors, International Symposium Belgrade 2022 (2022):46,
https://hdl.handle.net/21.15107/rcub_rimsi_2532 .