TY  - JOUR
A1  - Xie, Dongjiu
A1  - Jouini, Oumeima
A1  - Mei, Shilin
A1  - Quan, Ting
A1  - Xu, Yaolin
A1  - Kochovski, Zdravko
A1  - Lu, Yan
T1  - Spherical polyelectrolyte brushes templated hollow C@MnO nanospheres as sulfur host materials for Li-S batteries
JF  - ChemNanoMat : Chemistry of Nanomaterials for Energy, Biology and More
N2  - Li-S battery has been considered as the next-generation energy storage device, which still suffers from the shuttle effect of lithium polysulfides (LiPSs). In this work, mesoporous hollow carbon-coated MnO nanospheres (C@MnO) have been designed and synthesized using spherical polyelectrolyte brushes (SPB) as template, KMnO4 as MnO precursor, and polydopamine as carbon source to improve the electrochemical performance of Li-S battery. The hollow C@MnO nanospheres enable the combination of physical confinement and chemical adsorption of the LiPSs. The thin carbon coating layer can provide good electrical conductivity and additional physical confinement to polysulfides. Moreover, the encapsulated MnO inside the carbon shell exhibits strong chemical adsorption to polysulfides. The constructed C@MnO/S cathode shows the discharge capacity of 1026 mAh g(-1) at 0.1 C with 79% capacity retention after 80 cycles. The synthesized hollow C@MnO nanoparticles can work as highly efficient sulfur host materials, providing an effective solution to suppress the shuttle effect in Li-S battery.
KW  - hollow nanospheres
KW  - lithium-sulfur battery
KW  - manganese monoxide
KW  - sperical
KW  - polyelectrolyte brushes
Y1  - 2022
U6  - https://doi.org/10.1002/cnma.202100455
SN  - 2199-692X
VL  - 8
IS  - 4
PB  - Wiley-VCH
CY  - Weinheim
ER  -