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Controllable fabrication of LiMnPO4 microspheres assembled by radially arranged nanoplates with highly exposed (010) facets for an enhanced electrochemical performance

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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 NH4H2PO4 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.

Graphical abstract: Controllable fabrication of LiMnPO4 microspheres assembled by radially arranged nanoplates with highly exposed (010) facets for an enhanced electrochemical performance

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Publication details

The article was received on 04 Sep 2019, accepted on 28 Oct 2019 and first published on 28 Oct 2019


Article type: Paper
DOI: 10.1039/C9CE01387C
CrystEngComm, 2019, Advance Article

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    Controllable fabrication of LiMnPO4 microspheres assembled by radially arranged nanoplates with highly exposed (010) facets for an enhanced electrochemical performance

    X. Pan, Z. Gao, L. Liu, S. Xie, H. Yuan and F. Xiao, CrystEngComm, 2019, Advance Article , DOI: 10.1039/C9CE01387C

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