fig11
Figure 11. Schematic diagram of (A) materials preparation with gradient distribution of elements by step-by-step co-precipitation method[114]. (B) Controlling nucleation growth to prepare special exposed crystal faces and morphologies by solvothermal method[123]. (C) One-step preparation of O2-type Mn-based cathode material by electrochemical ion exchange[127]. (D) Synthesis process of one-dimensional core-shell structure by electrospinning method[139].
