A Novel SnO₂@BNNSs@C Composite Nano-structure and Its Electrochemical Energy Storage Characteristics

• Main Authors: AI Qing, YANG Can-xing, HUANG Ren-zhong, YANG Yan-fei, ZOU Wen-xiang, YUAN Song-dong
• Format: Article
• Language: zho
• Published: Journal of Materials Engineering 2018-11-01
• Series: Journal of Materials Engineering
• Subjects: nanocomposite structure; tin-based composite; BNNSs; reversible specific capacity
• Online Access: http://jme.biam.ac.cn/CN/Y2018/V46/I11/77
• ISSN: 1001-4381; 1001-4381

Nanosized SnO₂@BNNSs composites were prepared by the simple and industrializable coprecipitation method. The SnO₂ nanoparticles were homogeneous and distributed on BNNSs with diameter at approximately 4-5nm. SnO₂@BNNSs@C composite was prepared with glucose as carbon source to improve the electron conductivity. Compared with SnO₂ and SnO₂@C, the SnO₂@BNNSs@C complex has a reversible specific capacity of 490mAh/g after 50 cycles at the current density of 100mA/g, and its efficiency up to 98.8%. The synergistic effect between three components (SnO₂, BNNSs, C) is conducive to the improvement of electrochemical performance.