Tdk Corporation

Kazuma Akimoto

Hideaki Seki

Takamasa Minami

Masahiro Tsuchiya

Yuji Yamamoto

Tomohiko Hasegawa

A non-aqueous electrolytic liquid secondary battery wherein a potential of a metal layer in an exterior body is kept high, and corrosion can be suppressed, wherein an average thickness tof a first part of an exterior body covering a first side surface where a negative and a positive electrode terminal of a power generation element exist is different from an average thickness tof a second part of the exterior body covering a second side surface that intersects the first. In plan view of the power generation element from a lamination direction, in a second direction orthogonal to a first direction in which the electrode terminals extend, the relationship of t&#x3c;tis satisfied when a width of the negative electrode is larger than the positive, and in the second direction, the relationship of t&#x3e;tis satisfied when the width of the negative electrode is smaller than the positive.

Non-aqueous electrolytic liquid secondary battery

A non-aqueous electrolyte secondary battery in which a potential of a metal layer in an exterior body is kept noble, and corrosion can be suppressed, including: a power generation element wherein a positive electrode and a negative electrode are opposed to each other with a separator interposed therebetween, and the negative electrode is disposed on an outer side than the positive electrode; and an exterior body which covers the power generation element, and has a metal layer and a resin layer which covers both surfaces of the metal layer, and an average thickness tof a first part of the exterior body which covers upper and lower surfaces of the power generation element in a lamination direction of the power generation element and an average thickness tof a second part of the exterior body which covers side surfaces of the power generation element satisfy a relationship of t/t&#x3c;0.995.

Non-aqueous electrolyte secondary battery

Stabilized lithium powder according to an embodiment of this disclosure contains lithium particles and transition metal. Each lithium particle has a stabilized film on a surface thereof; the stabilized film contains an inorganic compound; and main transition metal, which is contained the most in the transition metal, is contained by 0.5 &#xd7;10wt % or more and 11.5&#xd7;10wt % or less.

Growing community of inventors

Tokyo, Japan

Kazuma Akimoto