Cobalt silicate hierarchical hollow spheres for lithium-ion batteries. (1st August 2016)

• Record Type: Journal Article
• Authors: Yang, Jun; Guo, Yuanyuan; Zhang, Yufei; Sun, Chencheng; Yan, Qingyu; Dong, Xiaochen
• Is Part Of: Nanotechnology. Volume 27:Number 36(2016)
• Publication Date: 2016-08-01
• Subjects: cobalt silicate -- hollow ppheres -- lithium ion battery; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/0957-4484/27/36/365401
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: In this paper, the synthesis of cobalt silicate novel hierarchical hollow spheres via a facile hydrothermal method is presented. With a unique hollow structure, the Co2 SiO4 provides a large surface area, which can shorten the lithium ions diffusion length and effectively accommodate the volumetic variation during the lithiation/de-lithiation process. Serving as an anode material in lithium-ion battery application, the Co2 SiO4 electrode demonstrates a high reversible specific capacity (first-cycle charge capacity of 948.6 mAh g −1 at 100 mA g −1 ), a cycling durability (specific capacity of 791.4 mAh g −1 after 100 cycles at 100 mA g −1 ), and a good rate capability (specific capacity of 349.4 mAh g −1 at 10 A g −1 ). The results indicate that the cobalt silicate hierarchical hollow sphere holds the potential applications in energy storage electrodes.