Fig. 4
From: Size-dependent kinetics during non-equilibrium lithiation of nano-sized zinc ferrite
In situ HRTEM study of S-ZFO and comparison of reaction kinetics of ZFO with different particle size. a Time-sequenced HRTEM images with phase information (overlaid false color) showing the phase evolution of S-ZFO as a function of reaction time. Scale bar: 10 nm. b Enlarged HRTEM images illustrating the preferred reaction interface. c Atomic model of {111} octahedron viewing along <110>direction. Scale bar: 5 nm. d Atomic model showing the structure of partially reacted {111} octahedron. e Projected area of spinel phase in S-ZFO (left panel, blue) and the three phases occurring in L-ZFO (right panel, green: L-ZFO, magenta: ordered rock-salt and gray: nanocomposite) changes as a function of time. Curves on the top of each panel showing the propagation speed of each reaction, which is the derivative of the projected area of each phase to reaction time (vertical axis on the right). f Size distribution of final discharge products (Zn0/Fe0) generated from S-ZFO (blue) and L-ZFO (green), respectively
