Issue 20, 2012
From the journal:

CrystEngComm

Synthesis of LiMnPO4 microspheres assembled by plates, wedges and prisms with different crystallographic orientations and their electrochemical performance

Xiao-Liang Pan,ab   Cheng-Yan Xu*ac  and  Liang Zhen*ac  

* Corresponding authors

a School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, China
E-mail: cy_xu@hit.edu.cn; lzhen@hit.edu.cn
Fax: 86 451 8641 3922
Tel: 86 451 8641 2133

b School of Mechatronics, Jinggangshan University, Ji’an, China

c MOE Key Laboratory of Micro-system and Micro-structures Manufacturing, Harbin Institute of Technology, Harbin, China

Abstract

Olivine-structured LiMnPO4 microspheres assembled by plates, wedges and prisms with different crystallographic orientations were synthesized via a facile hydrothermal route at 200 °C for 10 h. Na2S·9H2O was employed as a sole additive for controlling the phase, shape and crystallographic orientation of LiMnPO4 microspheres. The obtained product was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The possible formation mechanism was proposed based on time-dependent experiments. The electrochemical properties of carbon-coated LiMnPO4 samples with different assembly units were investigated. The synthesized LiMnPO4 microspheres assembled with plates exhibited higher discharge capacity, more stable cycling stability and better rate capability, which were attributed to the exposed (010) facets as well as small thickness along the [010] direction allowing for a fast Li+ ion diffusion rate and short diffusion length.

Graphical abstract: Synthesis of LiMnPO4 microspheres assembled by plates, wedges and prisms with different crystallographic orientations and their electrochemical performance

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Article information

DOI
https://doi.org/10.1039/C2CE25593F
Article type
Paper
Submitted
18 Apr 2012
Accepted
21 May 2012
First published
22 May 2012

CrystEngComm, 2012,14, 6412-6418

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Synthesis of LiMnPO4 microspheres assembled by plates, wedges and prisms with different crystallographic orientations and their electrochemical performance

X. Pan, C. Xu and L. Zhen, CrystEngComm, 2012, 14, 6412 DOI: 10.1039/C2CE25593F

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