MXene based self-assembled cathode and antifouling separator for high-rate and dendrite-inhibited Li–S battery
Type
ArticleAuthors
Guo, DongMing, Fangwang

Su, Hang
Wu, Yingqiang
Wahyudi, Wandi
Li, Mengliu

Hedhili, Mohamed N.

Sheng, Guan

Li, Lain-Jong

Alshareef, Husam N.

Li, Yangxing
Lai, Zhiping

KAUST Department
Advanced Membranes and Porous Materials Research CenterChemical Engineering Program
Functional Nanomaterials and Devices Research Group
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Surface Science
Date
2019-05-09Online Publication Date
2019-05-09Print Publication Date
2019-07Permanent link to this record
http://hdl.handle.net/10754/652901
Metadata
Show full item recordAbstract
We demonstrate a novel strategy to enhance sulfur loading and rate performance for Li–S battery by synchronously coupling a nanostructured cathode with an antifouling separator via a facile electrostatic self-assembly approach. The assembly of two dimensional (2D) MXene and positively charged 1D CNT-Polyethyleneimine was observed to controllably address the key issues of sluggish ionic transport, and produce an integrate cathode with dynamic crosslinking network. Moreover, an antifouling separator is proposed by this strategy for the first time, which features well-organized inter-lamellar porosity, dual polarity and high conductivity. The antifouling separator is found to play a pivotal role in: 1) low-order polysulfide activation, 2) high rate cyclability, and 3) Li dendrites inhibition. Our integrated design realizes a long-term capacity of 980 mAh g−1 at 5 mA cm−2 over 500 cycles (sulfur loading: 2.6 mg cm−2). Furthermore, a flexible self-assembled cathode with high loading (5.8 mg cm−2) and superb mechanical strength (13 MPa), demonstrates an appealing areal capacity of 7.1 mAh cm−2 and rate performance at nearly 10 mA cm−2.Citation
Guo D, Ming F, Su H, Wu Y, Wahyudi W, et al. (2019) MXene based self-assembled cathode and antifouling separator for high-rate and dendrite-inhibited Li–S battery. Nano Energy 61: 478–485. Available: http://dx.doi.org/10.1016/j.nanoen.2019.05.011.Sponsors
This work was supported by Huawei Grant RGC/3/3513.Publisher
Elsevier BVJournal
Nano EnergyAdditional Links
https://www.sciencedirect.com/science/article/pii/S2211285519304173ae974a485f413a2113503eed53cd6c53
10.1016/j.nanoen.2019.05.011