An Electrospun Core–Shell Nanofiber Web as a High-Performance Cathode for Iron Disulfide-Based Rechargeable Lithium Batteries
Artikel i vetenskaplig tidskrift, 2018

FeS2/C core–shell nanofiber webs were synthesized for the first time by a unique synthesis strategy that couples electrospinning and carbon coating of the nanofibers with sucrose. The design of the one-dimensional core–shell morphology was found to be greatly beneficial for accommodating the volume changes encountered during cycling, to induce shorter lithium ion diffusion pathways in the electrode, and to prevent sulfur dissolution during cycling. A high discharge capacity of 545 mAh g−1 was retained after 500 cycles at 1 C, exhibiting excellent stable cycling performance with 98.8 % capacity retention at the last cycle. High specific capacities of 854 mAh g−1, 518 mAh g−1, and 208 mAh g−1 were obtained at 0.1 C, 1 C, and 10 C rates, respectively, demonstrating the exceptional rate capability of this nanofiber web cathode.

cathode materials

core–shell nanofibers

electrospinning

FeS 2

high energy density lithium-ion batteries

Författare

Anupriya K. Haridas

Gyeongsang National University

Ji Eun Lim

Cheongju University

Du Hyun Lim

Chalmers, Fysik, Kondenserade materiens fysik

Jeha Kim

Cheongju University

K. K. Cho

Gyeongsang National University

Aleksandar Matic

Chalmers, Fysik, Kondenserade materiens fysik

Jae-Kwang Kim

Cheongju University

J. Ahn

Gyeongsang National University

ChemSusChem

1864-5631 (ISSN) 1864-564X (eISSN)

Vol. 11 20 3625-3630

Ämneskategorier

Oorganisk kemi

Materialkemi

Annan kemiteknik

DOI

10.1002/cssc.201801587

PubMed

30113135

Mer information

Senast uppdaterat

2018-11-15