A hybrid ZnO/Si/porous-carbon anode for high performance lithium ion battery

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2020-03, Vol.383, p.123198, Article 123198
• Main Authors: Sun, Xiaochen, Gao, Jinling, Wang, Chen, Gao, Xuan, Liu, Junsong, Gao, Nan, Li, Hongdong, Wang, Yu, Yu, Kaifeng
• Format: Article
• Language: English
• Subjects: Anode; Capacity; Lithium ion battery; Long-term cycle stability; ZnO/Si/porous-carbon
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2019.123198

[Display omitted] •Three dimensional nanosized ZnO/Si/porous-carbon were fabricated as anode material.•The anodes lead to improving the performances of corresponding lithium ion battery.•The mechanism of the novel anode for increasing the battery performances is studied. In this work, we report an anode material consisting of three-dimensional porous-carbon, nanometer-sized ZnO and Si nanoparticles to realize the high-performance lithium ion batteries. The composite powders are prepared following the processes of fabricating ZnO precursor by co-precipitation, hydrothermal reaction of mixed ZnO/SiO/porous-carbon powders, and subsequent neutralization and roast treatments. Using the hybrid anode material, the enhanced capacity performance (more than 900 mA h g−1 at 0.2 C after 300 cycles) and remarkable long-term cycle stability (more than 500 mA h g−1 at 2 C after 300 cycles) are achieved, which are significantly higher than that of using ZnO or graphite alone as anode. The improvement is ascribed to the synergistic effect of the highly conductive and large surface area porous-carbon, three-dimensional ZnO nanorods, and high adsorption of Li+ of Si particles.