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A novel layered Li [Li0.12NizMg0.32−zMn0.56]O2 cathode material for lithium-ion batteries |
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| Authors: | Chang Woo Lee Jai Prakash |
| Affiliation: | a Battery Research Group, Advanced Materials and Application Laboratory, Korea Electrotechnology Research Institute (KERI), Chang Won 641-120, South Korea b Department of Chemical Engineering, Hanyang University, Seoul 133-791, South Korea c Department of Chemical and Environmental Engineering,Center for Electrochemical Science and Engineering, Illinois Institute of Technology, 10 West 33rd street, Chicago, IL 60616, USA |
| Abstract: | Layered Li[Li0.12NizMg0.32−zMn0.56]O2 oxide cathodes containing lithium atoms in the transition metal layers were synthesized and characterized using X-ray diffraction (XRD), galvanostatic cycling, and differential scanning calorimetry (DSC). The Li[Li0.12NizMg0.32−zMn0.56]O2 cathodes deliver a specific discharge capacity of about 190 mAh/g at room temperature and 236 mAh/g at 55 °C when cycled between 2.7 and 4.6 V versus Li/Li+. Excellent capacity retention and smooth potential profiles at room and elevated temperatures over extended cycles suggest that this material does not convert into a spinel structure. |
| Keywords: | Lithium-ion cathode Layered oxide Thermal properties Differential scanning calorimeter Electrochemical performance |
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