Accumulator device

摘要

Disclosed is an accumulator device that can prevent aluminum forming an outer container from forming an alloy with lithium even when fine lithium metal powder is isolated from a lithium ion supply source to adhere to the outer container.;The accumulator device has an outer container at least a part of which is formed of aluminum or an aluminum alloy, a positive electrode and a negative electrode that are arranged in the outer container, and an electrolytic solution injected into the outer container and containing a lithium salt, wherein the negative electrode and/or the positive electrode is doped with a lithium ion by electrochemical contact of a lithium ion supply source arranged in the outer container with the negative electrode and/or the positive electrode, and the portion formed of aluminum or the aluminum alloy in the outer container is set to a positive potential.

主权项

1. A lithium ion capacitor comprising:
an outer container at least a part of which is formed of aluminum or an aluminum alloy, a positive electrode and a negative electrode that are arranged in the outer container, and an electrolytic solution injected into the outer container and containing a lithium salt, wherein the negative electrode is doped with a lithium ion by electrochemical contact of a lithium ion supply source arranged in the outer container with the negative electrode, wherein the portion formed of aluminum or the aluminum alloy in the outer container is set to a positive potential, wherein a wound-type electrode unit is housed in the outer container, wherein the electrode unit is formed of a wound electrode stack of the positive electrode, a second separator, and the negative electrode stacked on a first separator, wherein a positive electrode current collector plate made of a metal is arranged in a state electrically connected to a positive electrode current collector of the positive electrode, and wherein the positive electrode current collector plate is electrically connected to the outer container.