Electrode for molten salt battery, molten salt battery, and method for producing electrode

摘要

An electrode for a molten salt battery includes a current collector connectable to an electrode terminal of the molten salt battery and an active material. The current collector has an internal space in which small spaces are mutually coupled. The internal space of the current collector is filled with the active material.

主权项

1. An electrode for a molten salt battery, the electrode comprising:
a current collector connectable to an electrode terminal of the molten salt battery; and an active material, wherein the current collector has an internal space in which small spaces are coupled, the internal space is filled with the active material, wherein a void into which molten salt is flowable is provided in the electrode, wherein a direction from a positive electrode to a negative electrode in a state where the electrode is attached to the molten salt battery is defined as an electric field direction, and the void is a through hole extending along the electric field direction, wherein an interval between adjacent voids is set to a reference distance or less, the reference distance being determined based on a critical immersion distance, wherein the reference distance is set to twice the critical immersion distance to which an ion of a molten salt permeates the electrode, wherein the molten salt is electrolyte, the electrolyte is NaFSA-KFSA containing an anion represented by the following formula (1), a sodium cation, and potassium cation:where R1 and R2 each denote fluorine, and
wherein the molar ratio of KFSA is set in the range of 0.4 or more and 0.7 or less.