Toyota Jidosha Kabushiki Kaisha

Keita Niitani

Masato Hozumi

Shin Ushiroda

Hiroko Kuwata

A sodium ion secondary battery includes a cyclic organic compound as an active material and a complex hydride as a solid electrolyte, wherein the cyclic organic compound has at least two carbonyl groups —C(═O)—, the at least two carbonyl groups are bonded via a single bond or at least one conjugated double bond, and the complex hydride includes a Na cation and a complex ion containing H.

Sodium ion secondary battery

To provide an anode material that can improve the efficiency of the initial charging and discharging, the anode material includes an amorphous glassy carbon material that is an anode active material, and a NaMH compound that is a solid electrolyte.

Anode material for sodium ion battery, and sodium ion battery

Provided is a sodium ion conductor whose sodium ion conductivity is improved more than the conventional. The sodium ion conductor is a molecular crystal constituted of NaCBH, NaCBH, and a sodium halide, the sodium halide having a mol fraction of more than 0 and at most 70 on the basis of the total mol ratio of NaCBH, NaCBH, and the sodium halide.

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Shizuoka-ken, Japan

Keita Niitani