High-purity iron pyrite (FeS2) nanowires as high-capacity nanostructured cathodes for lithium-ion batteries.
Iron pyrite is an earth-abundant and inexpensive material that has long been interesting for electrochemical energy storage and solar energy conversion. A large-scale conversion synthesis of phase-pure pyrite nanowires has been developed for the first time. Nano-pyrite cathodes exhibited high Li-storage capacity and excellent capacity retention in Li/pyrite batteries using a liquid electrolyte, which retained a discharge capacity of 350 mAh g(-1) and a discharge energy density of 534 Wh kg(-1) after 50 cycles at 0.1 C rate.
Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA. jin@chem.wisc.edu.
Linsen
L
Li
Miguel
M
Cabán-Acevedo
Steven N
SN
Girard
Song
S
Jin
D011211:Electric Power Supplies; D007501:Iron / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D053770:Nanowires / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry*
D013440:Sulfides; C011342:pyrite; D008094:Lithium; D007501:Iron