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. 2021 Apr 30;26(9):2625. doi: 10.3390/molecules26092625

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) Electrochemical charge and discharge curve of 30% Li_1.25Cr_0.25Mn_1.5O₄ and 70% LiNi_0.5Mn_1.5O₄ solid solution formed at 850 °C (nominal composition: Li_1.025Cr_0.025Ni_0.45Mn_1.5O₄) (b) Discharge capacity of Li_1.075Cr_0.075Ni_0.35Mn_1.5O₄ as function of charge and discharge rate at a loading of about 6 mg cm⁻¹ (~ 0.7 mAh cm⁻¹). Symmetrical charge and discharge rate indicated on the figure were varied each five cycles (cycles 1–30) and fixed at 1C for cycles 31–60.