TY - JOUR
T1 - A Ti3C2Tx-Based Composite as Separator Coating for Stable Li-S Batteries
AU - Yi, Ruowei
AU - Zhao, Yinchao
AU - Liu, Chenguang
AU - Sun, Yi
AU - Zhao, Chun
AU - Li, Yinqing
AU - Yang, Li
AU - Zhao, Cezhou
N1 - Funding Information:
This research was funded by the National Natural Science Foundation of China, grant number NSFC Grants 21750110441; Suzhou Industrial Park Initiative Platform Development for Suzhou Municipal Key Lab for New Energy Technology, grant number RR0140, and Key Program Special Fund in XJTLU, grant number KSF-A-04, KSF-E-28, and KSF-E-38.
Publisher Copyright:
© 2022 by the authors.
PY - 2022/11
Y1 - 2022/11
N2 - The nitrogen-doped MXene carbon nanosheet-nickel (N-M@CNi) powder was successfully prepared by a combined process of electrostatic attraction and annealing strategy, and then applied as the separator coating in lithium–sulfur batteries. The morphology and structure of the N-M@CNi were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman spectrum, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption–desorption method. The strong LiPS adsorption ability and high conductivity are associated with the N-doped carbon nanosheet-Ni modified surface. The modified separator offers the cathode of Li–S cell with greater sulfur utilization, better high-rate adaptability, and more stable cycling performance compared with the pristine separator. At 0.2 C the cell with N-M@CNi separator delivers an initial capacity of 1309 mAh g−1. More importantly, the N-M@CNi separator is able to handle a cathode with 3.18 mg cm−2 sulfur loading, delivering a capacity decay rate of 0.043% with a high capacity retention of 95.8%. Therefore, this work may provide a feasible approach to separator modification materials towards improved Li-S cells with improved stability.
AB - The nitrogen-doped MXene carbon nanosheet-nickel (N-M@CNi) powder was successfully prepared by a combined process of electrostatic attraction and annealing strategy, and then applied as the separator coating in lithium–sulfur batteries. The morphology and structure of the N-M@CNi were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman spectrum, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption–desorption method. The strong LiPS adsorption ability and high conductivity are associated with the N-doped carbon nanosheet-Ni modified surface. The modified separator offers the cathode of Li–S cell with greater sulfur utilization, better high-rate adaptability, and more stable cycling performance compared with the pristine separator. At 0.2 C the cell with N-M@CNi separator delivers an initial capacity of 1309 mAh g−1. More importantly, the N-M@CNi separator is able to handle a cathode with 3.18 mg cm−2 sulfur loading, delivering a capacity decay rate of 0.043% with a high capacity retention of 95.8%. Therefore, this work may provide a feasible approach to separator modification materials towards improved Li-S cells with improved stability.
KW - carbon nanosheets
KW - lithium–sulfur batteries
KW - modified separator
KW - MXene
UR - http://www.scopus.com/inward/record.url?scp=85141834997&partnerID=8YFLogxK
U2 - 10.3390/nano12213770
DO - 10.3390/nano12213770
M3 - Article
AN - SCOPUS:85141834997
SN - 2079-4991
VL - 12
JO - Nanomaterials
JF - Nanomaterials
IS - 21
M1 - 3770
ER -