| 摘要 |
An active material that can achieve sufficient discharge capacity at high discharging rate, an electrode including the active material, and a lithium ion secondary battery including the electrode, and a method for manufacturing the active material are provided. The active material includes a LiVOPO4 powder, a first carbon powder, and a second carbon powder. A relational expression of 0.05@A1/A2@0.5 is satisfied, where A1 represents the ratio of the G band peak height observed around 1580 cm-1 in Raman spectrum of the first carbon powder to the 2D band peak height observed around 2700 cm-1 in the Raman spectrum of the first carbon powder, and A2 represents the ratio of the G band peak height observed around 1580 cm-1 in Raman spectrum of the second carbon powder to the 2D band peak height observed around 2700 cm-1 in the Raman spectrum of the second carbon powder. |
