TY  - JOUR
A1  - Mei, Shilin
A1  - Jafta, Charl J.
A1  - Lauermann, Iver
A1  - Ran, Qidi
A1  - Kaergell, Martin
A1  - Ballauff, Matthias
A1  - Lu, Yan
T1  - Porous Ti4O7 Particles with Interconnected-Pore Structure as a High-Efficiency Polysulfide Mediator for Lithium-Sulfur Batteries
JF  - Advanced functional materials
N2  - Multifunctional Ti4O7 particles with interconnected-pore structure are designed and synthesized using porous poly(styrene-b-2-vinylpyridine) particles as a template. The particles can work efficiently as a sulfur-host material for lithium-sulfur batteries. Specifically, the well-defined porous Ti4O7 particles exhibit interconnected pores in the interior and have a high-surface area of 592 m(2) g(-1); this shows the advantage of mesopores for encapsulating of sulfur and provides a polar surface for chemical binding with polysulfides to suppress their dissolution. Moreover, in order to improve the conductivity of the electrode, a thin layer of carbon is coated on the Ti4O7 surface without destroying its porous structure. The porous Ti4O7 and carbon-coated Ti4O7 particles show significantly improved electrochemical performances as cathode materials for Li-S batteries as compared with those of TiO2 particles.
KW  - lithium-sulfur batteries
KW  - porous particles
KW  - poly(styrene-b-2-vinylpyridine) (PS-P2VP)
KW  - Ti4O7
Y1  - 2017
U6  - https://doi.org/10.1002/adfm.201701176
SN  - 1616-301X
SN  - 1616-3028
VL  - 27
PB  - Wiley-VCH
CY  - Weinheim
ER  -