ELECTRODE STRUCTURE AND SECONDARY BATTERY
FIG2 is an enlarged cross-sectional view showing a portion of the electrode structure shown in FIG1
The positive electrode active material-containing layer contains particles of the positive electrode active material. Therefore, as shown in FIG2, the main surface of the active material-containing layer 20b may have minute unevenness.
cross-sectional view
232
resin mass resin masses
20
electrode
10
electrode structure
231
organic fiber organic fibers
23
organic fibers-including layer
['1. An electrode structure (10) comprising: an electrode (20) comprising an active material-containing layer (20b); and a separator (22) comprising a layer (23) provided on a main surface (S1) of the active material-containing layer (20b), wherein the layer (23) comprises organic fibers (231) and a resin mass (232), the resin mass (232) is in contact with a portion of the main surface (S1) of the active material-containing layer (20b) and is integrated with a portion of the organic fibers (231), and when a length of the resin mass (232) is represented by a circumscribed quadrilateral of the resin mass (232), a length of a first side of the circumscribed quadrilateral and a length of a second side adjacent to the first side are each 10 µm or more.']