Bubble-templated synthesis of Fe2(MoO4)3 hollow hierarchical microsphere with superior low-temperature behavior and high areal capacity for lithium ion batteries. (10th July 2019)

• Record Type: Journal Article
• Authors: Liang, Chennan; Tao, Yuanxue; Yang, Nan; Huang, Dekang; Li, Shu; Han, Kang; Luo, Yanzhu; Chen, Hao; Mai, Liqiang
• Is Part Of: Electrochimica acta. Volume 311(2019)
• Page Start: 192
• Page End: 200
• Publication Date: 2019-07-10
• Subjects: Fe2(MoO4)3 -- Hollow hierarchical microsphere -- High rate -- Low temperature -- High areal capacity; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2019.04.133
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: The exploration of earth-abundant electrode materials with superior low-temperature behavior and high areal capacity have become more and more urgent for the field of electric vehicles and portable electronic devices. Hollow hierarchical microstructure composed of nanoscaled subunits holds great potential in developing novel electrode materials with superior electrochemical performance. Herein, we demonstrate a bubble-templated method to synthesize Fe2 (MoO4 )3 hollow microspheres, and the formation mechanism is carefully investigated. When evaluated as the lithium-ion battery anode, they exhibit a high reversible capacity of 1205 mA h g −1 at 0.5 A g −1 after 200 cycles, good rate performance of 565 mA h g −1 at 10 A g −1, excellent low temperature capability of 281 mA h g −1 at 1 A g −1 at −20 °C, and high reversible areal discharge capacity of 5.2 mA h cm −2 with a high active material mass loading of 5 mg cm −2 . Additionally, the full cell assembled with activated Fe2 (MoO4 )3 hollow microspheres negative electrode and LiFePO4 positive electrode exhibits a high reversible capacity of 1115 mA h g −1 at 0.2 A g −1 . Furthermore, in situ X-ray diffraction analysis is applied to clarify the electrochemical reaction mechanism during the discharge/charge process. Graphical abstract: A bubble-templated method is developed to synthesize Fe2 (MoO4 )3 hollow hierarchical microspheres with superior high-rate, low-temperature, and high-areal-capacity lithium storage properties.Image 1