Figure 25.

a) Structure and electrochemical performance of olivine‐structured cathode thin‐film electrodes: a‐1) XRD spectra of LiFePO₄ deposited at different substrate temperatures, a‐2) morphologies of LiFePO₄ thin film electrodes deposited at different temperatures, and a‐3) galvanostatic charge/discharge plot where 1, 2, 3, and 4 correspond to substrate temperature 25, 300, 400, and 500 °C, respectively. Reproduced with permission.^{[ 256 ]} Copyright 2009, American Chemical Society. b) Cyclability and electrochemical impedance spectra: b‐1) cyclability of LiFePO₄ crystallized between 550 and 700 °C and b‐2) impedance spectra of LiFePO₄ crystallized between 550 and 760 °C. Reproduced with permission.^{[ 293 ]} Copyright 2014, Royal Society of Chemistry. c) Galvanostatic charge/discharge plot of LiMnPO₄ crystallized at 600 °C. Reproduced with permission.^{[ 294 ]} Copyright 2005, Elsevier.