| 摘要 |
The purpose of the present invention is to establish both load characteristics and high temperature storage characteristics for a lithium ion battery that uses a lithium iron phosphate positive electrode. The battery comprises an olivine lithium iron phosphate positive electrode and negative electrode. A battery that maintains a direct current resistance value and for which both output characteristics and high temperature storage characteristics are established is provided by using a nonaqueous electrolyte containing vinylene carbonate and, as a hydrochloric acid controlling agent, 0.01 - 0.7 wt% of a N,N-dimethylacetamide. |
