A Novel α‐MoO₃/Single‐Walled Carbon Nanohorns Composite as High‐Performance Anode Material for Fast‐Charging Lithium‐Ion Battery

Abstract

Orthorhombic α‐MoO3 is a potential anode material for lithium‐ion batteries due to its high theoretical capacity of 1100 mAh g−1 and excellent structural stability. However, its intrinsic poor electronic conductivity and high volume expansion during the charge–discharge process impede it from achieving a high practical capacity. A novel composite of α‐MoO3 nanobelts and single‐walled carbon nanohorns (SWCNHs) is synthesized by a facile microwave hydrothermal technique and demonstrated as a high‐performance anode material for lithium‐ion batteries. The α‐MoO3/SWCNH composite displays superior electrochemical properties (654 mAh g−1 at 1 C), excellent rate capability (275 mAh g−1 at 5 C), and outstanding cycle life (capacity retention of >99% after 3000 cycles at 1 C) without any cracking of the electrode. The presence of SWCNHs in the composite enhances the electrochemical properties of α‐MoO3 by acting as a lithium storage material, electronic conductive medium, and buffer against pulverization.

Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries

“…( 3), the average D Li of PCVO was 6.95 × 10 -10 cm 2 s −1 , showing the same order of magnitude that AIMD simulations have achieved. The D Li of our PCVO ND was higher than that of commercial anode materials (graphite, Li 4 Ti 5 O 12 , and Si) and higher than that of previously reported fast-charging anode materials [28][29][30][31][32] (Fig. 2e), experimentally confirming PCVO ND's feasibility in fastcharging high-energy-density LIBs.…”

Growth, characterization and performance of bulk and nanoengineered molybdenum oxides for electrochemical energy storage and conversion

“…Recently, a novel composite of α-MoO3 nanobelts and single-walled carbon nanohorns (SWCNHs) has been synthesized by a microwave hydrothermal method. Tested as a anode material for LIBs, the α-MoO3/SWCNH composite displays a specific capacity of 654 mAh g −1 at 1C rate, excellent rate capability (275 mAh g −1 at 5 C), and outstanding cycle life (capacity retention of >99% after 3000 cycles at 1C) without any cracking of the electrode [275]. Feng et al [276] produced SnO2/MoO3 nanoparticles encapsulated in plate-like graphite via simple hydrothermal synthesis and dry ball milling.…”

Composition‐Dependent Long‐Term Stability of Mosaic Solid‐Electrolyte Interface for Long‐Life Lithium‐Ion Battery

“…[28] In the EIS spectrum, the high and middle-frequency regions (100 kHz to 10 Hz) are attributed to SEI layer growth, while the low-frequency region (10 Hz to 50 mHz) corresponds to the lithium-ion diffusion rate kinetics. [1,4] In our previous work, the mosaic SEI layer formation and its influence on the lithium-ion rate kinetics were studied as a function of discharge voltage. [4] The SEI layer resistance (R SEI ), Ohmic resistance (R 0 ), and the charge transfer resistance (R ct ) were measured from the Nyquist plot by fitting with an electrochemical equivalent circuit (EEC).…”

“…Lithium-ion batteries (LIBs) have emerged as important energy storage solutions for stationary, portable electronics, and electric vehicle applications. [1] Performance, cycle life, fast charging, and safety are the key disruptors in escalating the market size of LIBs. [2] Graphite is the most commonly used anode material in LIBs due to its low potential, low cost, and excellent structural stability.…”