General Approach to Single and Hybrid Metal Oxide Fiber Structures for High‐Performance Lithium‐Ion Batteries. Issue 7 (28th February 2020)

• Record Type: Journal Article
• Authors: Xie, Ling; Yan, Yan; Lin, Huijuan; Rui, Kun; Huang, Aoming; Du, Min; Shen, Yu; Zhu, Jixin
• Is Part Of: Chemistry, an Asian journal. Volume 15:Issue 7(2020)
• Page Start: 1105
• Page End: 1109
• Publication Date: 2020-02-28
• Subjects: anode -- electrospinning -- lithium ion battery -- metal oxides -- fiber structures; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201901690
• Languages: English
• ISSNs: 1861-4728

Abstract

Abstract: Owing to the high specific capacity and energy density, metal oxides have become very promising electrodes for lithium‐ion batteries (LIBs). However, poor electrical conductivity accompanied with inferior cycling stability resulting from large volume changes are the main obstacles to achieve a high reversible capacity and stable cyclability. Herein, a facile and general approach to fabricate SnO2, Fe2 O3 and Fe2 O3 /SnO2 fibers is proposed. The appealing structural features are favorable for offering a shortened lithium‐ion diffusion length, easy access for the electrolyte and reduced volume variation when used as anodes in LIBs. As a consequence, both single and hybrid oxides show satisfactory reversible capacities (1206 mAh g −1 for Fe2 O3 and 1481 mAh g −1 for Fe2 O3 /SnO2 after 200 cycles at 200 mA g −1 ) and long lifespans. Abstract : Single and hybrid oxides (SnO2, Fe2 O3, Fe2 O3 /SnO2 ) nanofibers were fabricated through a general approach. The appealing structures offer a shortened Li + diffusion length and reduced volume variation when used as anodes in lithium‐ion batteries. As expected, Fe2 O3 /SnO2 shows excellent reversible capacity and stable cyclability. SnO2 and Fe2 O3 also exhibit satisfactory performance.