Three-dimensional hierarchical ZnCo2O4@C3N4-B nanoflowers as high-performance anode materials for lithium-ion batteries. Issue 54 (2nd September 2020)

• Record Type: Journal Article
• Authors: Xiao, Haihong; Ma, Guoqing; Tan, Junyu; Ru, Shuai; Ai, Zhaoquan; Wang, Caixia
• Is Part Of: RSC advances. Volume 10:Issue 54(2020)
• Page Start: 32609
• Page End: 32615
• Publication Date: 2020-09-02
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d0ra05203e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : ZnCo2 O4 has become one of the most widely used anode materials due to its good specific capacity, cost-efficiency, high thermal stability and environmental benignity. Abstract : ZnCo2 O4 has become one of the most widely used anode materials due to its good specific capacity, cost-efficiency, high thermal stability and environmental benignity. However, its poor conductivity and cycle stability have limited its practical application in lithium-ion batteries. To overcome these issues, we constructed a 3D nanoflower composite material (ZnCo2 O4 @C3 N4 -B) by combining ZnCo2 O4 as a framework and B-doped g-C3 N4 (g-C3 N4 -B) as a new carbon source material via a simple hydrothermal method. ZnCo2 O4 @C3 N4 -B exhibited exceptional specific capacitance of 919.76 mA h g −1 after 500 cycles at 0.2 A g −1 and a long-term capacity retention of 97.8% after 1000 cycles at 2 A g −1 . The high reversible capacity, long cycling life and good rate performance could be attributed to the 3D interconnected architecture and doping of g-C3 N4 -B. This work provides a simple and general strategy to design high-performance anode materials for lithium-ion batteries to meet the needs of practical applications.