| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a current collector arranged for a lithium fuel battery using an electrolytic solution of an aqueous solution form so as to have corrosion resistance in the electrolytic solution and to serve to ensure a battery function over a long period of time.SOLUTION: Proposed as a current collector material for an aqueous solution-based lithium ion secondary battery is a ferritic stainless steel which includes 11.0-20.0 mass% of Cr, 0.015 mass% or less of C, 0.8 mass% or less of Si, and 2.0 mass% or less of Mn with the balance consisting of Fe, and other inevitable impurities. The ferritic stainless steel further includes at least one kind of material of 3.0 mass% or less of Mo, 2.0 mass% or less of Ni, 3.0 mass% or less of Cu, 0.1-0.6 mass% of Nb, and 0.1-0.4 mass% of Ti. In 1M-lithium salt aqueous solution, a corrosion current is 10μA/cmor smaller at the time of application of a potential of 1.2 V to SCE.</p> |
