Synthesis and Characterization of 𝐋𝐢𝐍𝐢_0.7--𝑥𝐌𝐠_𝑥𝐂𝐨_0.3𝐎₂ (0≤𝑥≤0.1) Cathode Materials for Lithium-Ion Batteries Prepared by a Sol-Gel Method

Figure 3

Initial charge-discharge curves of LiNi_0.7--𝑥Mg_𝑥Co_0.3O₂ (0≤𝑥≤0.1) at 0.1 C in 2.0–4.4 V: (a) 𝑥=0.05; (b) 𝑥=0; (c) 𝑥=0.1.