Graphite Nanoplates Firmly Anchored with Well-dispersed Porous Zn3V2O8 Nanospheres: Rational Fabrication and Enhanced Lithium Storage Capability. (10th September 2017)

• Record Type: Journal Article
• Authors: Bie, Changfeng; Pei, Jian; Wang, Jinli; Hua, Ke; Chen, Dahong; Chen, Gang
• Is Part Of: Electrochimica acta. Volume 248(2017)
• Page Start: 140
• Page End: 149
• Publication Date: 2017-09-10
• Subjects: Zn3V2O8 -- uniformly anchoring -- graphite nanoplates -- anode material -- lithium ion batteries; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.07.112
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: Graphite nanoplates firmly anchoring with well-dispersed porous Zn3 V2 O8 nanospheres (Zn3 V2 O8 /GNPs) was rationally fabricated, which exhibiting enhanced electrochemical performances as an anode material for lithium-ion batteries. Highlights: The Zn3 V2 O8 /GNPs composite was rationally fabricated. Well-dispersed porous Zn3 V2 O8 nanospheres firmly anchored on graphite nanoplates. Demonstrating solvent complexation effect to construct uniform anchoring nanostructure. The Zn3 V2 O8 /GNPs exhibit superior lithium storage capability. Abstract: Developing electrode materials with both high energy and power densities is of crucial importance for lithium ion batteries (LIBs). In this work, a novel anode material, graphite nanoplates firmly anchoring with well-dispersed porous Zn3 V2 O8 nanospheres (Zn3 V2 O8 /GNPs), is rationally fabricated via a simple and scalable liquid reflux and subsequent calcination process. The introduced GNP matrices significantly improved the electrochemical performances of the Zn3 V2 O8 /GNPs by enhancing structural durability of the electrodes and facilitating the electron-transfer and mass-transport kinetics. Thus, the Zn3 V2 O8 /GNPs-50 exhibits a reversible specific capacity of 648 mA h g −1 at a current density of 0.8 A g −1 after 100 cycles and 488 mA h g −1 at a high current density of 3.2 A g −1 after 400 cycles. Inspiringly, a new full cell (Zn3 V2 O8 /GNPs-50//LNCM-111) was successfully assembled, which manifested superior electrochemical performances. Hence, we believe that this study demonstrates a promising anode material for next generation LIBs, and particularly, provides a strategy for the rational design of GNPs-based metal oxide composite materials.