2011
DOI: 10.1016/j.jpowsour.2010.11.150
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Synthesis, phase relation and electrical and electrochemical properties of ruthenium-substituted Li2MnO3 as a novel cathode material

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Cited by 80 publications
(69 citation statements)
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“…The LMR and Li 2 RuO 3 were synthesized by a solid-state reaction at 1200°C and 1000°C, respectively, as reported previously, 15,22 and phase identification was done by XRD measurement with Rigaku RINT 2100 diffractometer using monochromatic Cu KA radiation. The electrochemical properties were examined using 2032-type coin-cells (Hohsen Corp.) at a constant current rate of C/10 calculated from the theoretical capacity taking only into account that Li in lithium layer is utilized.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…The LMR and Li 2 RuO 3 were synthesized by a solid-state reaction at 1200°C and 1000°C, respectively, as reported previously, 15,22 and phase identification was done by XRD measurement with Rigaku RINT 2100 diffractometer using monochromatic Cu KA radiation. The electrochemical properties were examined using 2032-type coin-cells (Hohsen Corp.) at a constant current rate of C/10 calculated from the theoretical capacity taking only into account that Li in lithium layer is utilized.…”
Section: Methodsmentioning
confidence: 99%
“…[11][12][13][14] Recently, we first reported that the solid solution of Li 2 Mn 1¹x Ru x O 3 exhibit high capacity of about 200 mAh g ¹1 and lower electrical resistivity five order of magnitude than Li 2 MnO 3 , indicating that the substitution of Ru is effective to enhance the electrochemical as well as electrical properties. 15 Li 2 RuO 3 is isostructural with Li 2 MnO 3 , composed of lithium and lithium-transition metal layer except for a minor stacking difference. In addition, Li 2 RuO 3 exhibits complementary properties to Li 2 MnO 3 such as good cyclic capacity of about 160 mAh g ¹1 at a voltage range between 3.0 V and 4.0 V, and remarkably lower resistivity of 10 ³ cm.…”
Section: Introductionmentioning
confidence: 98%
“…[4][5][6][7][8] Previous efforts by Inaguma 4 and Bruce 8 have managed to decrease the electric resistivity and improve the Li-ion diffusion by doping Ru and Cr in Li 2 MnO 3 , respectively. In addition, tracing back to the essential causes, it is believed that the performance degradation of Li 2 MnO 3 is closely related to the layer-to-spinel structural transition, typically characterized with Mn migration into the Li layer.…”
Section: Introductionmentioning
confidence: 99%
“…Mori et al also investigated the effect of Ru doping in Li 2 MnO 3 , obtaining a discharge capacity of 192 mAh g −1 for 60% substitution of manganese, while at 80% the capacity was ∼180 mAh g −1 . Ruthenium substitution studies demonstrated a noticeable improvement on the electrochemical performance of the cathode material due to the ability of ruthenium to be oxidized [12]. Kim et al studied the effect of Al, Cr, Zn and Fe doping in the Mn-site of Li 2 MnO 3 .…”
Section: Introductionmentioning
confidence: 99%