No abstract

No abstract

No abstract

Bare and carbon coated LiMnPO 4 nanorods were synthesized by modified polyol and resin coating processes to enhance their conductivity as well as their electrochemical properties. X-ray diffraction, Fourier transform infrared, scanning electron microscope, and transmission electron microscope results confirmed crystalline phase, structure, and uniform coating of carbon over LiMnPO 4 nanorods, respectively. Raman spectra of carbon coated LiMnPO 4 nanorods showed two bands ͑D and G bands͒ due to the presence of carbon, which was not observed in the bare LiMnPO 4 nanorods. Conductivity and mobility results showed more than 2 orders of magnitude enhancement of electronic conductivity in the carbon coated LiMnPO 4 nanorods compared to the bare one and it is attributed to the presence of carbon over LiMnPO 4 nanorods. CR2032-type lithium ion coin cells were fabricated using bare and carbon coated LiMnPO 4 nanorods and characterized by measuring charge-discharge cycles between 2.9 and 4.5 V at room temperature. Both cells exhibit high capacity and good cyclability. The improved capacity was attributed to a one dimensional electron transport pathway in LiMnPO 4 nanorods. Further improvement in the capacity, up to 120 mAh/g at 1 C ͑25%͒, was also achieved in the carbon coated LiMnPO 4 nanorods synthesized using modified polyol and resin coating processes.

No abstract

No abstract

No abstract

No abstract