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- W4383068799 abstract "Abstract Lithium manganese‐rich layered oxides are promising cathode materials for lithium‐ion batteries due to their high discharge capacity, but they suffer from capacity fading and poor rate performance. Herein we report on the physicochemical and electrochemical properties of Li 1.15 Mn 0.7 Ni 0.2 Co 0.1 O 2 synthesized via a sol gel method, and study the effect of copper doping on the resulting materials. Electrochemical testing at 1 C revealed 1 % Cu doping enhanced capacity retention (from 58 % to 78 %) but also decreased capacity, while in contrast 10 % Cu doping increased capacity by 21 %. Thorough characterization (including x‐ray diffraction, scanning electron microscopy, inductively coupled plasma‐optical emission spectroscopy, and electrochemical analyses such as voltage vs. capacity and dQ/dV plots) was employed to understand these results, which may be attributed to the competition of two different phenomena depending on the copper content. Consequently, this work highlights the importance of targeting bespoke stoichiometries depending on the desired electrochemical characteristics – an important point for the future design of materials for fast charging and high power applications." @default.
- W4383068799 created "2023-07-05" @default.
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- W4383068799 date "2023-07-03" @default.
- W4383068799 modified "2023-09-25" @default.
- W4383068799 title "Effects of Copper Doping in High‐Rate, Lithium Manganese‐Rich Layered Oxide Cathodes for Lithium‐Ion Batteries" @default.
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- W4383068799 doi "https://doi.org/10.1002/celc.202300236" @default.
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