Metal
dichalcogenide cathodes can be used to increase the capacities
of rechargeable aluminum-ion batteries. However, the higher charge
density of trivalent metal cations (Al3+) and the inherently
strong polarization effect on the host lattice result in poor MoS2 cycling performance. Thus, we designed MoS2-MXene
composites as a novel cathode to improve the performance of rechargeable
aluminum-ion batteries. The results of this study show that Ti3C2T
x
MXene can provide
a conductive framework with exceptional mechanical integrity for MoS2. The electrochemical performance of MoS2 can be
significantly improved by compounding with Ti3C2T
x
MXene.
Aluminum-ion batteries have become a promising energy
storage device
due to their low cost, large volume specific capacity, and environmental
friendliness. Due to the poor reversibility and conductivity of traditional
electrode materials, the development of aluminum-ion batteries has
been greatly hindered. In this paper, a new stable WS2/WO3 cathode for aluminum-ion batteries was prepared by the coprecipitation
method. The introduction of the WS2/WO3 heterojunction
greatly enhances the electron transfer rate between the material interfaces,
and the large specific surface area of the material also provides
more active sites for the electrochemical reaction. The WS2/WO3 cathode retained a high specific capacity of 200
mAh/g with a capacity retention of 80% at 1000 mA/g after 100 cycles.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.