We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Yolk-shell-structured (FeNi)S solid-solution powders: Synthesis and application as anode materials for Na-ion batteries.
- Authors
Kim, Jung; Kang, Yun
- Abstract
Multicomponent metal sulfide materials with a yolk-shell structure and a single phase were studied for the first time as anode materials for sodium-ion batteries. Yolk-shell-structured Fe-Ni-O powders with a molar ratio of iron and nickel components of 1/1 were prepared via one-pot spray pyrolysis. The prepared Fe-Ni-O powders were transformed into yolk-shell-structured (FeNi)S solid-solution powders via a sulfidation process. The initial discharge and charge capacities of the (FeNi)S powders at a current density of 1 A·g were 601 and 504 mA·h·g, respectively. The discharge capacities of the (FeNi)S powders for the 2 and 100 cycle were 530 and 527 mA·h·g, respectively, and their corresponding capacity retention measured from the 2 cycle was 99%. The (FeNi)S powders had high initial discharge and charge capacities at a low current density of 0.1 A·g, and the reversible discharge capacity decreased slightly from 568 to 465 mA·h·g as the current density increased from 0.1 to 5.0 A·g. The synergetic effect of the novel yolk-shell structure and the multicomponent sulfide composition of the (FeNi)S powders resulted in excellent sodium-ion storage performance.
- Publication
Nano Research, 2017, Vol 10, Issue 9, p3178
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-017-1535-1