Electrode, and lithium ion secondary battery, electric double layer capacitor and fuel cell using the same

摘要

The present invention provides an electrode comprising a carbon material obtained from an azulmic acid and a current collector and/or a binder.

主权项

1. An electrode for a lithium ion secondary battery comprising a carbon material which satisfies the following conditions (1), (2) and (3):
(1) carbon atoms, nitrogen atoms and hydrogen atoms contained in said electrode satisfy the following expressions (I) and (II):
(NN/Nc)>0.87×(NH/Nc)−0.06 (I)(NN/Nc)>0.01(II)wherein NN, Nc and NH represent the number of nitrogen atoms, carbon atoms and hydrogen atoms, respectively;
(2) X-ray diffraction patterns obtained by using a CuKαray as an X-ray source have a peak at a position corresponding to a diffraction angle (2θ) of 23.5 to 25.5° ; and (3) a spectrogram by laser Raman spectrometry with a wave number of 1000 to 2000cm−1 has a peak P1 between 1355 and 1385 cm−1 and a peak P2 between 1550 and 1620 cm−1; a lowest point M having a smallest height L from the baseline between the peak P1 and the peak P2; and a ratio (L/H1) of said height L to a height H1 of 0.70 to 0.95 wherein the height H1 is a height from the baseline at said peak P1.