Lithium-ion secondary battery
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHideaki OKA
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Abstract
A lithium-ion secondary battery includes at least a positive electrode and a negative electrode. The negative electrode is porous. The negative electrode includes a carbon fiber aggregate and a polymer film. The carbon fiber aggregate is an aggregate of a plurality of carbon fibers bound together in a three-dimensional fashion. The polymer film covers a surface of each of the carbon fibers. The positive electrode includes a group of particles and an electrolyte solution. The group of particles is dispersed in the electrolyte solution. The group of particles contains a positive electrode active material and a conductive material. Pores that are present within the negative electrode are filled with the positive electrode. The polymer film is swollen with the electrolyte solution.
Claims6
A lithium-ion secondary battery, comprising at least:
- a positive electrode;
- and
- a negative electrode,
- the negative electrode being porous,
- the negative electrode comprising a carbon fiber aggregate and a polymer film,
- the carbon fiber aggregate being an aggregate of a plurality of carbon fibers bound together in a three-dimensional fashion,
- the polymer film covering a surface of each of the carbon fibers,
- the positive electrode comprising a group of particles and an electrolyte solution,
- the group of particles being dispersed in the electrolyte solution,
- the group of particles comprising a positive electrode active material and a conductive material,
- pores that are present within the negative electrode being filled with the positive electrode,
- the polymer film being swollen with the electrolyte solution.
Dependencies are inferred from the claim text.