A facile route to prepare mixed transition metal oxide yolk–shell microspheres for enhanced lithium storage. Issue 28 (21st June 2019)

• Record Type: Journal Article
• Authors: Gu, Yuanxiang; Xuan, Yuxue; Zhang, Heng; Deng, Xiaoyan; Sun, Yanhui; Wang, Lei
• Is Part Of: Dalton transactions. Volume 48:Issue 28(2019)
• Page Start: 10604
• Page End: 10609
• Publication Date: 2019-06-21
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c9dt01770d
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Yolk–shell ZnCo2 O4 microspheres were prepared via a coordination co-precipitation route, which exhibited superior electrochemical performance. Abstract : A coordination co-precipitation route followed by a calcination process was developed to prepare mixed transition metal oxide microspheres with a yolk–shell structure. ZnCo2 O4, NiCo2 O4, MnCo2 O4, ZnMn2 O4 and CoMn2 O4 have been successfully fabricated, which demonstrates the universality of this route. As a promising anode for lithium-ion batteries (LIBs), ZnCo2 O4 was investigated as a typical example, which showed a remarkable reversible capacity of 1063 mA h g −1 after 50 cycles at a current density of 200 mA g −1 and a good rate capability of 839 mA h g −1 after 200 cycles at a large current density of 900 mA g −1 . This work shows the extensive potential of a general route for the synthesis of yolk–shell microspheres for next-generation energy conversion and storage devices.