Catalysis of silica-based anode (de-)lithiation: compositional design within a hollow structure for accelerated conversion reaction kinetics. Issue 25 (17th June 2020)

• Record Type: Journal Article
• Authors: Shen, Yabin; Cao, Zhen; Wu, Yingqiang; Cheng, Yong; Xue, Hongjin; Zou, Yeguo; Liu, Gang; Yin, Dongming; Cavallo, Luigi; Wang, Limin; Ming, Jun
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 25(2020)
• Page Start: 12306
• Page End: 12313
• Publication Date: 2020-06-17
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0ta01671c
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : New hierarchical hollow SiO2 spheres decorated with metal nanoparticles were designed by using an in situ self-assembly approach for lithium-ion battery applications. Abstract : New hierarchical hollow SiO2 spheres (HHSs) decorated with metal nanoparticles ( i.e., Co, Co–HHS) were designed using an in situ self-assembly approach. The Co nanoparticles were found to have a catalytic effect on (de-)lithiation of SiO2 and hence in storing lithium. Then, an extremely high capacity of 932 mA h g −1 and good cycling stability for more than 1000 cycles were demonstrated in the corresponding lithium battery. In addition, the lithium-ion full batteries of the Co–HHS versus lithium layered oxide cathode ( e.g., LiNi1/3 Co1/3 Mn1/3 O2, NCM333) were introduced and showed good performance, demonstrating the promising application of the Co–HHS, in particular for pursuing high-energy-density batteries.