NOVELTY - A secondary battery comprises cathode (51), anode (52), and non-aqueous electrolytic solution in which cathode consists of 1st lithium (Li)-containing compound having a bedded salt-type crystal structure and greater than or equal to 1 metal elements (M) other than Li and 2nd Li-containing compound. Photoelectron spectrum of oxygen 1s associated with 1st Li-containing compound has horizontal axis representative of binding energy in electron volt and vertical axis representative of spectrum intensity, is obtained by surface analysis of cathode using X-ray photoelectron spectroscopy, and includes 1st peak and 2nd peak.    USE - A secondary battery for battery pack, electric vehicle, electric power storage system, electric power tool, and electronic apparatus (all claimed).    ADVANTAGE - Adhesion of separator with respect to cathode and anode is improved, and skewness of spirally wound electrode body is suppressed. Decomposition reaction of electrolytic solution and liquid leakage of electrolytic solution with which the base material layer is impregnated are suppressed. Even if charge and discharge are repeated, the resistance is less likely to be increased, and battery swelling is suppressed. Superior battery capacity, superior cycle characteristics, and superior conservation characteristics are obtained.    DETAILED DESCRIPTION - A secondary battery comprises cathode (51), anode (52), and non-aqueous electrolytic solution in which cathode consists of 1st lithium (Li)-containing compound having a bedded salt-type crystal structure and greater than or equal to 1 metal elements (M) other than Li and 2nd Li-containing compound. Photoelectron spectrum of oxygen 1s associated with 1st Li-containing compound has horizontal axis representative of binding energy in electron volt and vertical axis representative of spectrum intensity, is obtained by surface analysis of cathode using X-ray photoelectron spectroscopy, and includes 1st peak and 2nd peak. The 1st peak has an apex in a range in which binding energy is 531-535 eV both inclusive, and the 2nd peak has an apex in a range in which binding energy is 529-531 eV and has spectrum intensity smaller than spectrum intensity of the 1st peak. When atomic ratio (Co/M) of cobalt (Co) in metal element is greater than or equal to 0.5, ratio (IB/IA) between spectrum intensity (IA) of 2nd peak and spectrum intensity (IB) in the case where binding energy is 535 eV is greater than or equal to 1, and when atomic ratio Co/M is less than or equal to 0.5, ratio (IC/IA) between IA and spectrum intensity (IC) in the case where binding energy is 536 eV is greater than or equal to 1, where the 2nd Li-containing compound has an olivine-type crystal structure. Photoelectron spectrum of oxygen 1s associated with 2nd Li-containing compound has horizontal axis representative of binding energy in electron volt and vertical axis representative of spectrum intensity, is obtained by surface analysis of cathode using X-ray photoelectron spectroscopy, and includes 3rd peak and 4th peak. The 3rd peak has an apex in a range in which binding energy is 530-533 eV, and the 4th peak has an apex in a range in which binding energy is 533-536 eV both inclusive and has spectrum intensity smaller than spectrum intensity of the 3rd peak. Ratio (IE/ID) between spectrum intensity (ID) of the 3rd peak and spectrum intensity (IE) of the 4th peak is greater than or equal to 1/4. INDEPENDENT CLAIMS are included for:    (1) electrode comprising 1st Li-containing compound and 2nd Li-containing compound;    (2) battery pack comprising secondary battery, control section configured to control the operation of secondary battery, and switch section configured to switch the operation of the secondary battery according to an instruction of the control section;    (3) electric vehicle comprising secondary battery, conversion section configured to convert electric power supplied from secondary battery into drive power, drive section configured to operate according to the drive power, and control section configured to control the operation of secondary battery;    (4) electric power storage system comprising secondary battery, greater than or equal to 1 electric devices configured to be supplied with electric power from secondary battery, and control section configured to control the supply of electric power from secondary battery to electric devices;    (5) electric power tool comprising secondary battery and movable section configured to be supplied with electric power from secondary battery; and    (6) electronic apparatus comprising secondary battery as an electric power supply source.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a configuration of laminated-film-type secondary battery using the electrode.    Electrode body (50)    Cathode (51)    Anode (52)    Outer package component (60)    Adhesive film (61)