Solvothermal synthesis of nano-LiMnPO4 from Li3PO4 rod-like precursor: reaction mechanism and electrochemical properties

Yang, Shi-Liu1; Ma, Ru-Guang1; Hu, Ming-Jun1; Xi, Liu-Jiang1; Lu, Zhou-Guang1,2; Chung, C. Y.1

2012

10.1039/c2jm34193j

J MATER CHEM   Impact Factor & Quartile

0959-9428

1364-5501

A simple one-pot solvothermal approach is employed to synthesize LiMnPO4 (LMP) nanomaterials by using Li3PO4 nanorods and MnSO4 center dot H2O as the precursors. Various experimental parameters, such as volume ratio of polyethylene glycol 600 (PEG600) to water, reactant feeding order, reaction time and pH value, are discussed. The phase and morphology changes of the product were characterized by XRD and TEM. A reaction mechanism is proposed based on the characteristic results. The charge-discharge properties show that the LMP nanomaterials synthesized at 180 degrees C for 4 h at a pH value of 6.46 followed by sintering with glucose at 600 degrees C for 3 h under argon atmosphere present the highest discharge capacity of 147 mA h g(-1) at 0.05 C rate (i.e. w8.55 mA g(-1) of current rate) under a galvanostatic charging-discharging mode, and it can retain 93% of the initial capacity of 46.6 mA h g(-1) after cycling 200 times at 1 C rate. Cyclic voltammetry (CV) was also used to investigate the carbon coated LMP electrode.

SCI ; EI

English

Others

Hong Kong SAR government Research Grant Council[9041528] ; Hong Kong SAR government Research Grant Council[CityU 100510]

Chemistry ; Materials Science

Chemistry, Physical ; Materials Science, Multidisciplinary

WOS:000311970800053

ROYAL SOC CHEMISTRY

20124815739081

Cyclic voltammetry ; Electric discharges ; Manganese compounds ; Nanorods ; Nanostructured materials ; pH ; Sintering

Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Chemistry, General:801.1 ; Electrochemistry:801.4.1 ; Solid State Physics:933

Web of Science

1.City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon Tong, Hong Kong, Peoples R China
2.S Univ Sci & Technol China, Dept Micronano Mat & Devices, Shenzhen, Guangdong, Peoples R China

Yang, Shi-Liu,Ma, Ru-Guang,Hu, Ming-Jun,et al. Solvothermal synthesis of nano-LiMnPO4 from Li3PO4 rod-like precursor: reaction mechanism and electrochemical properties[J]. J MATER CHEM,2012,22(48):25402-25408.

Yang, Shi-Liu,Ma, Ru-Guang,Hu, Ming-Jun,Xi, Liu-Jiang,Lu, Zhou-Guang,&Chung, C. Y..(2012).Solvothermal synthesis of nano-LiMnPO4 from Li3PO4 rod-like precursor: reaction mechanism and electrochemical properties.J MATER CHEM,22(48),25402-25408.

Yang, Shi-Liu,et al."Solvothermal synthesis of nano-LiMnPO4 from Li3PO4 rod-like precursor: reaction mechanism and electrochemical properties".J MATER CHEM 22.48(2012):25402-25408.