NOVELTY - The method involves forming composition for negative electrode active material layer containing a polymer in which dissolution or dispersion in water is possible. An aqueous medium is coated on a negative electrode collector. The negative electrode active material layer is formed on the negative electrode collector by drying on the conditions of less than 10 degree Celsius of dew point temperatures after the coating. The formed negative electrode active material layer is exposed to the environment of dew-point-temperature ranging from 17 to 52 degree Celsius for 30 minutes.    USE - Method for manufacturing a negative electrode for a non-aqueous-electrolyte-type secondary battery e.g. lithium ion secondary battery and nickel-hydrogen battery, that is utilized in vehicle e.g. motor vehicle, hybrid vehicle and electric vehicle and fuel cell electric vehicle. Can also be used manufacturing a negative electrode for a non-aqueous-electrolyte-type secondary battery for personal computer, portable terminal and electricity products.    ADVANTAGE - The method enables the formed negative electrode active material layer to be exposed to the environment of dew-point-temperature ranging from 17 to 52 degree Celsius for 30 minutes, so that production of impurity i.e. hydrogen fluoride, by the reaction of residual water content in the negative electrode active material layer and the supporting electrolyte in electrolyte solution can be suppressed suitably, thus preventing fall of capacity of the battery resulting from impurity.    DETAILED DESCRIPTION - The negative electrode active material layer contains the polymer of cellulose derivative i.e. carboxymethylcellulose (CMC). An INDEPENDENT CLAIM is also included for a method for manufacturing a non-aqueous-electrolyte-type secondary battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a graph representing a relationship between a dew point temperature and a capacity maintenance factor for non-aqueous-electrolyte-type secondary battery.'(Drawing includes non-English language text)'