Vertically oriented MoS₂ nanoflakes coated on 3D carbon nanotubes for next generation Li-ion batteries

Abstract

The advent of advanced electrode materials has led to performance enhancement of traditional lithium ion batteries (LIBs). We present novel binder-free MoS coated three-dimensional carbon nanotubes (3D CNTs) as an anode in LIBs. Scanning transmission electron microscopy analysis shows that vertically oriented MoS nanoflakes are strongly bonded to CNTs, which provide a high surface area and active electrochemical sites, and enhanced ion conductivity at the interface. The electrochemical performance shows a very high areal capacity of ~1.65 mAh cm with an areal density of ~0.35 mg cm at 0.5 C rate and coulombic efficiency of ~99% up to 50 cycles. The unique architecture of 3D CNTs-MoS is indicative to be a promising anode for next generation Li-ion batteries with high capacity and long cycle life.

Honeycomb‐Inspired Surface‐Patterned Cu@CuO Composite Current Collector for Lithium‐Ion Batteries

“…To clarify the enhanced electrochemical performance of cellular Cu@CuO current collectors, we further measured the electrochemical impedance spectroscopy (EIS) feature of the anodes before the charge/discharge process. As shown in Figure , the EIS spectra of the electrodes consist of a depressed semicircle at the high–middle frequency range related to the charge transfer resistance ( R ct ) and an inclined line in the low‐frequency range corresponding to the Warburg impedance ( Z w ) . Apparently, it is seen that R ct of LIBs based on the cellular Cu@CuO current collector is much smaller than the cellular and complanate Cu current collectors.…”

Carbon‐Sheathed MoS2 Nanothorns Epitaxially Grown on CNTs: Electrochemical Application for Highly Stable and Ultrafast Lithium Storage

“…[46,47] The CNT-MoS 2 nanocomposites were reported recently as high capacity anode materials for LIBs, [30,39,[46][47][48][49][50][51][52] while these nanocomposites with different microstructure characteristics remain as physical assembly without chemical bonding interconnection. [46,47] The CNT-MoS 2 nanocomposites were reported recently as high capacity anode materials for LIBs, [30,39,[46][47][48][49][50][51][52] while these nanocomposites with different microstructure characteristics remain as physical assembly without chemical bonding interconnection.…”

“…Among the carbon materials, carbon nanotube (CNT) is an ideal supporting matrix due to its excellent electrical conductivity, good mechanical property, high surface area, and especially the well‐defined surface lattice structure . The CNT–MoS 2 nanocomposites were reported recently as high capacity anode materials for LIBs, while these nanocomposites with different microstructure characteristics remain as physical assembly without chemical bonding interconnection. It is notable that the c ‐lattice spaces of MoS 2 are much close to the ab ‐lattice spaces of CNT.…”

Two-Dimensional Transition Metal Dichalcogenides and Their Charge Carrier Mobilities in Field-Effect Transistors

“…2D materials can also be utilized in fuel cells due to their photocatalytic properties [ 125 ]. Moreover, anodes made from graphene have shown enhanced cyclic lithium storage capacity (specific capacity of 460 mAh g −1 ), which can be utilized in the flexible battery devices [ 126 – 128 ]. 2D materials have also shown promising properties for supercapacitors.…”