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      분체공학, 유동충, 고분자, 재료(무기, 유기) : LiNiO2의 합성 최적조건 확립 및 과량의 리튬함량과 Al 도핑이 전기화학적 특성에 미치는 영향 = Powder Technology, Fluidized Bed, Polymers Materials(Inorganics, Organics) : Optimization of LiNiO2 Synthetic Condition and Effect of Excess Lithium and Al Doping on Electrochemical Characteristics of the Lithium Nickel Oxides

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      https://www.riss.kr/link?id=A30071673

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      LiNiO_2, Li_(1+x)NiO_2(x=0.00-0.05) and LiAl_yNi_(1-y)O_2 (y=0.00-0.3) powers were synthesized using a sol-gel method. To synthesize LiNiO_2 with a good electrochemical performance, the experiments were carried out as function of the molar ratio of adipic acid to total metal ions, excess Li content, and Al doping. The synthesized LiNiO_2 powders showed a good crystal quality when the molar ratio of adipic acid to total metal ions was 1.0. The analysis of gas composition evolved during the decomposition of gel precursors revealed that oxygen played an important role in improving the crystal quality of LiNiO_2 powders. All the prepared Li_(1+x)NiO_2 powders had a typical LiNiO_2 layered structure, but the electrochemical performance was degraded with the increasing the lithium content. Al-doped LiAl_yNi_(1-y)O_2 powdwers were better than LiNiO_2 powders in cyclicality though it showed a low initial discharge capacity. The Al doped LiAl_yNi_(1-y)O_2 powders presented a good electrochemical performance even at higher temperatures.
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      LiNiO_2, Li_(1+x)NiO_2(x=0.00-0.05) and LiAl_yNi_(1-y)O_2 (y=0.00-0.3) powers were synthesized using a sol-gel method. To synthesize LiNiO_2 with a good electrochemical performance, the experiments were carried out as function of the molar ratio of ad...

      LiNiO_2, Li_(1+x)NiO_2(x=0.00-0.05) and LiAl_yNi_(1-y)O_2 (y=0.00-0.3) powers were synthesized using a sol-gel method. To synthesize LiNiO_2 with a good electrochemical performance, the experiments were carried out as function of the molar ratio of adipic acid to total metal ions, excess Li content, and Al doping. The synthesized LiNiO_2 powders showed a good crystal quality when the molar ratio of adipic acid to total metal ions was 1.0. The analysis of gas composition evolved during the decomposition of gel precursors revealed that oxygen played an important role in improving the crystal quality of LiNiO_2 powders. All the prepared Li_(1+x)NiO_2 powders had a typical LiNiO_2 layered structure, but the electrochemical performance was degraded with the increasing the lithium content. Al-doped LiAl_yNi_(1-y)O_2 powdwers were better than LiNiO_2 powders in cyclicality though it showed a low initial discharge capacity. The Al doped LiAl_yNi_(1-y)O_2 powders presented a good electrochemical performance even at higher temperatures.

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