@article{27723,
  author = {Kai-Yang Niu and Feng Lin and Liang Fang and Dennis Nordlund and Runzhe Tao and Tsu-Chien Weng and Marca M Doeff and Haimei Zheng},
  title = {Structural and Chemical Evolution of Amorphous Nickel Iron Complex Hydroxide upon Lithiation/Delithiation},
  abstract = {<p>Development of novel electrode materials is essential to achieve high-performance lithium ion batteries. Here, we demonstrate that amorphous nickel iron complex hydroxides (Ni–Fe–OH) synthesized by a laser–chemical method can be used as a potential conversion anode material for lithium storage. Complementary characterizations, including ensemble-averaged X-ray absorption spectroscopy, spatially resolved electron energy-loss spectroscopy, and energy dispersive X-ray spectroscopy in a scanning transmission electron microscope, were performed to reveal the chemical and structural evolutions of the active hydroxide particles undergoing electrochemical cycling. The solid–electrolyte interphase (SEI) layer with a primary component of lithium fluoride (LiF) was found and remained robust on the particle surface during the charge/discharge processes, which suggests that the LiF-containing SEI layer plays a critical role in maintaining the stable capacity retention and good reversibility of the Ni–Fe–OH anode.</p>},
  year = {2015},
  journal = {Chemistry of Materials},
  volume = {27},
  number = {5},
  pages = {1583-1589},
  month = {01/2015},
  isbn = {0897-47561520-5002},
  doi = {10.1021/cm5041375},
  language = {eng},
}