title: Electrochemical performance of electrodeposited Zn4Sb3 films for sodium-ion secondary battery anodes.
abstract: We report the electrodeposition of zinc-antimony composite films from aqueous solution. We show that it is possible to produce Zn4Sb3 films on zinc substrates by low-temperature annealing and we evaluate their performance as sodium-ion battery anodes. Near complete utilization of the antimony (>90%) during cycling, good cycle life (>250 cycles), and high rate performance is demonstrated for Zn4Sb3 thin films. Interestingly, when Zn4Sb3 transforms in situ to an amorphous zinc-antimony composite, it shows superior performance to zinc-antimony composites that are initially amorphous. This demonstrates the importance of the initial electrode structure on promoting the sodium alloying reaction.
authors: Department of Chemistry, Colorado State University, Fort Collins, Colorado, United States.
authors: E D
authors: ED
authors: Jackson
authors: Department of Chemistry, Colorado State University, Fort Collins, Colorado, United States.
authors: S
authors: S
authors: Green
authors: Department of Chemistry, Colorado State University, Fort Collins, Colorado, United States.
authors: A L
authors: AL
authors: Prieto
keywords: electrodeposition; sodium-ion battery; thin film anode; zinc antimonide