Indexed by:
Abstract:
Unsatisfactory cycling stability and rate capability due to volume expansion and poor electrical conductivity greatly hinder the practical application of MoS2-based materials. Aiming to address these issues, a novel 3D hierarchical conductive network architecture consisting of MoS2 nanotubes derived from self-assembled ultrathin MoS2 nanosheets with in situ N-doped carbon intercalation and reduced graphene oxide used as an encapsulating function (NC-MoS2@rGO) were effectively achieved. Due to many advantages mainly including hollow tubes, ultrathin MoS2 nanosheets, expanded interlayer spacing and highly conductive rGO wrapping, this architecture achieves more active sites, faster electron and ion transport rates, and greater structural stability. These advantages are finally attributable to the excellent electrochemical performance of lithium-ion batteries (LIBs) and sodium-ion batteries (NIBs). In LIBs, NC-MoS2@rGO displays a high specific capacity of 1308.6 mA h g−1 at 0.2 A g−1 after 200 cycles, superior rate capability (834.2 mA h g−1 at 10 A g−1), and ultra-long cycle stability (528.4 mA h g−1 at 5 A g−1 after 6590 cycles). In addition, the electrode also obtained the expected discharge capacity (554.8 mA h g−1 at 0.2 A g−1 after 200 cycles) and cycle stability (463.6 mA h g−1 at 1 A g−1 after 1000 cycles and 383.2 mA h g−1 at 2 A g−1 after 1500 cycles) in Na ion storage. Furthermore, we elucidated the highly reversible electrochemical storage behavior of Na ions by using the ex situ X-ray diffraction (XRD) technique. Density functional theory (DFT) calculations further prove the positive effect of the added graphene on the improvement of battery performance. © 2023 The Royal Society of Chemistry.
Keyword:
Reprint 's Address:
Email:
Version:
Source :
Journal of Materials Chemistry C
ISSN: 2050-7526
Year: 2023
Issue: 39
Volume: 11
Page: 13228-13243
5 . 7
JCR@2023
5 . 7 0 0
JCR@2023
JCR Journal Grade:1
CAS Journal Grade:2
Cited Count:
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
Affiliated Colleges: