Back to results
US 2026/0290909 A1Published application
Electricity storage device
AssigneePrime Planet Energy & Solutions, Inc.
InventorsRyosuke IWATA, Shigeki MATSUTA
Life of this patent
Estimating the term…
Abstract
To provide an electricity storage device with reduced unevenness in film formation and improved battery performance and safety. In the electricity storage device, an electrolyte solution contains a boron-containing film-forming agent. A negative electrode active material layer 40 adheres to a separator 50. The negative electrode active material layer 40 contains graphite particles 43, and the graphite particles 43 have a degree of orientation of 180 or less.
Claims6
An electricity storage device, comprising:
- an electrode assembly including a positive electrode having a positive electrode active material layer, a negative electrode having a negative electrode active material layer, and a separator interposed between the positive electrode and the negative electrode;
- and
- an electrolyte solution, wherein
- the electrolyte solution contains a boron-containing film-forming agent,
- the negative electrode active material layer adheres to the separator,
- the negative electrode active material layer contains graphite particles, and
- the graphite particles contained in the negative electrode active material layer have a degree of orientation of 180 or less.
4 more elements
Dependencies are inferred from the claim text.