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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Miyayama, Masaru
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2012High capacity positive electrodes for secondary Mg-ion batteriescitations
- 2012Synthesis and electrochemical behavior of hollandite MnO2/acetylene black composite cathode for secondary Mg-ion batteriescitations
- 2011The diffusions and associated interfacial layer formation between thin film electrolyte and cermet anode in IT-SOFCcitations
- 2011Diffusion and segregation along grain boundary at the electrolyte–anode interface in IT-SOFCcitations
- 2011Mutual diffusion and microstructure evolution at the electrolyte−anode interface in intermediate temperature solid oxide fuel cellcitations
- 2007Cathode performance of nanostructured La1-aSraCo1-bFebO3- on a Ce0.8Sm0.2O2 electrolyte prepared by citrate-nitrate auto-combustioncitations
- 2006Electrode performance of nanostructured La1-aSraCo1-bFebO3-x on a Ce0.8Sm0.2O2 electrolyte prepared by citrate nitrate auto-combustioncitations
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article
High capacity positive electrodes for secondary Mg-ion batteries
Abstract
<p>Composites of layered structured Birnessite-MnO <sub>2</sub> and tunnel structured Hollandite-MnO <sub>2</sub> in presence of acetylene black were synthesized as positive electrode materials for rechargeable Mg-ion batteries. Reversible insertion/extraction of Mg-ion in the host structures was examined in the potential range of -1.8 to 1.0 V vs. Ag/Ag <sup>+</sup>. Results indicated that Mg-ion exchanged Birnessite/acetylene black composite showed the highest discharge capacity (109 mAh g <sup>-1</sup>) at 1st discharge, when compared to other microstructures of Birnessite. Meanwhile, the composite comprising of 65 wt% Hol-MnO <sub>2</sub> and 35 wt% acetylene black showed very high insertion of Mg-ion (0.87 Mg/Mn) corresponding to discharge capacity of 475 mAh g <sup>-1</sup> when tested at 60°C in galvanostatic mode. The layered and tunneled framework of the MnO <sub>2</sub> was retained with minor displacive adjustments even after substantial Mg-ion insertion/extraction after several cycles. However, large specific capacity loss was observed after 20 cycles in all of the microstructures probably due to Mg-ion trapping in the host lattice. Furthermore, the effect of the cation (K <sup>+</sup>) present in the tunnel of Hollandite on Mg-ion diffusion was analyzed as well and it was concluded that tunnel cation could impede the movement of Mg-ion in host structure.</p>