PHYLLOSILICATE COMPOUND FOR SODIUM SECONDARY BATTERY

• Main Authors: TAKAHASHI KENICHI, OKADA MASAKI, CHIBA KAZUYUKI, MATSUNAGA OSAMU, KOBAYASHI WATARU, TAKAHARA TOSHIYA
• Format: Patent
• Language: English; Japanese
• Published: 05.06.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide at least any one of a phyllosilicate compound, which is suitable as a cathode active material of a sodium secondary battery, and a manufacturing method thereof.SOLUTION: The present invention relates to a phyllosilicate compound containing one or more transition metals selected from among Fe, Mn, Ni and Co. Regarding grating constants, it is respectively preferable that a is 9.655 Å or more and 9.685 Å or less, b is 8.785 Å or more and 8.805 Å or less, c is 5.290 Å or more and 5.305 Å or less, α and γ are 90° and β is 107.30° or more and 107.50° or less.SELECTED DRAWING: Figure 1 【課題】ナトリウム二次電池の正極活物質として適したフィロシリケート化合物及びその製造方法の少なくともいずれかを提供する。【解決手段】Ｆｅ、Ｍｎ、Ｎｉ及びＣｏの群から選ばれる１以上の遷移金属を含むフィロシリケート化合物。格子定数が、それぞれ、ａが９．６５５Å以上９．６８５Å以下、ｂが８．７８５Å以上８．８０５Å以下、及び、ｃが５．２９０Å以上５．３０５Å以下、及び、αとγが９０°、及び、βが１０７．３０°以上１０７．５０°以下であることが好ましい。【選択図】 図１