A Comparison of the Capacities of ZnMn2O4 and ZnCr0.15Mn1.85O4 in Aqueous Media
Апстракт
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.
Кључне речи:
Zn-ion batteries / ZnMn2O4 cathode material / ZnCr0.15Mn1.85O4 cathode material / ZnCl2 aqueous solutions / Cyclic voltammetryИзвор:
COIN2022 Contemporary Batteries and Supercapacitors, International Symposium Belgrade 2022, 2022, 46-Издавач:
- University of Belgrade - Faculty of Physical Chemistry, Belgrade, Serbia
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200051 (Институт за општу и физичку хемију, Београд) (RS-MESTD-inst-2020-200051)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200053 (Универзитет у Београду, Институт за мултидисциплинарна истраживања) (RS-MESTD-inst-2020-200053)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200146 (Универзитет у Београду, Факултет за физичку хемију) (RS-MESTD-inst-2020-200146)
Институција/група
Institut za multidisciplinarna istraživanjaTY - 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 .