1 research outputs found
Borophene as Conductive Additive to Boost the Performance of MoS<sub>2</sub>‑Based Anode Materials
Carbon-based
materials, including graphene, porous carbon, and
nanotubes, have been widely used as conductive additives to reduce
the resistance in semiconductive anode materials of lithium-ion batteries
(LIBs) toward better performance and the alleviated battery overheat
problem. However, these additives are usually denounced for their
low lithium-ion capacity. Moreover, emergence of vacant defect and
heteroatom incorporation would open a sizable energy gap accompanied
by reduced conductance. Here, by selecting MoS<sub>2</sub> as a prototype
system, we proclaim the utilization of emerging borophene as the conductive
additive in terms of its low ion-transport barrier and robust metallic
conductivity against defects and external doping in addition to its
high Li-storage capacity. We found that substantial electrons transfer
from MoS<sub>2</sub> to borophene, producing strong electronic coupling
that conduces to favorable interface bonding in combination with improved
Li affinity. Incorporation of borophene also compensates the poor
mechanical property of MoS<sub>2</sub> with increased elastic modulus,
ensuring the electrode integrity against pulverization. Furthermore,
B/MoS<sub>2</sub> can achieve a maximum Li-storage capacity of 539
mAh/g along with low ion-hopping barriers inherited from its counterparts.
Our work brings new opportunities to boost the electrochemical performance
of semiconductive anode materials with borophene for LIBs