naa a22 4500 51073412X CHVBK 20180411083003.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s12039-013-0407-9 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0407-9 Revisiting the electrochemical impedance behaviour of the LiFePO4/C cathode [Elektronische Daten] [HUA JU, JUN WU, YANHUI XU] In the present work, the electrochemical behaviour of LiFePO4/C electrode has been reported. Specially, the electrochemical impedance spectroscopies (EIS) have been studied in detail. The discharge capacity is more than 120mAh/g. There are two semicircles being found in the Nyquist plot for the cycled electrode and one semicircle for the as-prepared electrode. It is found that the interface capacitance is in an order of magnitude of 10μF/cm2 for the high-frequency semicircle, while for the second semicircle the interface capacitance is 5.3~45.4 × 103 μF/cm2. It could be concluded that the high-frequency semicircle is to correspond to the charge transfer process. The function of the carbon layer is also briefly discussed. Graphical Abstract From the view point of electrode reaction kinetics, only increase of the electronic conductivity cannot effectively improve the electrochemistry of LiFePO4. The improvement of LiFePO4 electrochemistry is caused mainly by the electro-catalytic activity for Li/Li +  reaction, when the LiFePO4/electrolyte interface was replaced by LiFePO4/C/electrolyte interface. Indian Academy of Sciences, 2013 Lithium ion battery nationallicence impedance spectroscopy nationallicence electrochemistry nationallicence lithium iron phosphate nationallicence JU HUA School of Urban Rail Transportation, Soochow University, 215006, Suzhou, China aut WU JUN Institute of Chemical Power Sources, Soochow University, 215006, Suzhou, China aut XU YANHUI Institute of Chemical Power Sources, Soochow University, 215006, Suzhou, China aut Journal of Chemical Sciences Springer-Verlag 125/3(2013-05-01), 687-693 0974-3626 125:3<687 2013 125 12039 https://doi.org/10.1007/s12039-013-0407-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0407-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- JU HUA School of Urban Rail Transportation, Soochow University, 215006, Suzhou, China aut NATIONALLICENCE 700 1- WU JUN Institute of Chemical Power Sources, Soochow University, 215006, Suzhou, China aut NATIONALLICENCE 700 1- XU YANHUI Institute of Chemical Power Sources, Soochow University, 215006, Suzhou, China aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer-Verlag 125/3(2013-05-01), 687-693 0974-3626 125:3<687 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer