A Novel α‐MoO3/Single‐Walled Carbon Nanohorns Composite as High‐Performance Anode Material for Fast‐Charging Lithium‐Ion Battery. Issue 36 (30th July 2020)

• Record Type: Journal Article
• Authors: Sahu, Sumit Ranjan; Rikka, Vallabha Rao; Haridoss, Prathap; Chatterjee, Abhijit; Gopalan, Raghavan; Prakash, Raju
• Is Part Of: Advanced energy materials. Volume 10:Issue 36(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-07-30
• Subjects: anodes -- lithium‐ion batteries -- MoO 3 -- single‐walled carbon nanohorns; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.202001627
• Languages: English
• ISSNs: 1614-6832

Abstract

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. Abstract : An α‐MoO3 nanobelts/single‐walled carbon‐nanohorns (SWCNHs) nanocomposite is synthesized by a microwave‐hydrothermal technique. The point‐to‐point contact of the horn‐tips of SWCNHs with α‐MoO3 enhances the ambipolar diffusion of Li + and electrons in the composite. It displays remarkable reversible capacity (654 mAh g −1 at 1 C), rate capability (100 C), and long cycle life (3000 cycles) as an anode for lithium‐ion batteries.