Controllable fabrication of LiMnPO4 microspheres assembled by radially arranged nanoplates with highly exposed (010) facets for an enhanced electrochemical performance. Issue 47 (8th November 2019)

• Record Type: Journal Article
• Authors: Pan, Xiaoliang; Gao, Zhi; Liu, Lijun; Xie, Shikun; Yuan, Huiling; Xiao, Fen
• Is Part Of: CrystEngComm. Volume 21:Issue 47(2019)
• Page Start: 7217
• Page End: 7223
• Publication Date: 2019-11-08
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c9ce01387c
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : LiMnPO4 hollow microspheres assembled by radially aligned nanoplates with a high percentage of exposed (010) facets are prepared to improve the rate capability. Abstract : An LiMnPO4 cathode with an active crystal orientation can contribute towards its charge transfer kinetics. However, the development of a facile strategy for the manipulation of its active crystal orientation remains a great challenge. Here, we reported a simple solvothermal method to prepare LiMnPO4 hollow microspheres assembled by radially aligned nanoplates with the (010)-exposed surface and thin [010] thickness. The amount of the NH4 H2 PO4 additive was the key factor that controlled the ac -plane surface area of the assembled subunits of the microspheres. When applied for the cathode, the nanoplate-assembled microspheres exhibited superior rate capability compared to those of the nanoprism-assembled and thick plate-assembled microspheres, showing the discharge capacities of ∼130 mA h g −1 at 1 C and ∼81 mA h g −1 at 10 C. The improved electrochemical performance could be attributed to the advantages of the large (010) surface and the thin [010] thickness of the assembled nanoplates, which may facilitate easy access to the surface and rapid migration of lithium ions.