COATED ACTIVE MATERIAL
To provide a coated active material in which an increase in discharge resistance is suppressed.SOLUTION: A coated active material includes an active material and a coating layer covering at least a portion of a surface of the active material, and a particle size increase rate calculated from the par...
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| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a coated active material in which an increase in discharge resistance is suppressed.SOLUTION: A coated active material includes an active material and a coating layer covering at least a portion of a surface of the active material, and a particle size increase rate calculated from the particle size (D99) at 99% cumulative value in a volume-based particle size distribution determined by a laser diffraction scattering method using the formula "particle size increase rate (%)=[D99 of coated active material/D99 of active material not including coating layer]×100" is 6.5% or less.SELECTED DRAWING: Figure 1
【課題】放電抵抗の増加が抑制された被覆活物質を提供すること。【解決手段】活物質と、前記活物質の表面の少なくとも一部を被覆する被覆層と、を備え、レーザー回折散乱法によって求めた体積基準の粒度分布における積算値９９％での粒子径（Ｄ９９）から、式「粒径増大率（％）＝〔被覆活物質のＤ９９／被覆層を含まない活物質のＤ９９〕×１００」により求められる粒径増大率が、６．５％以下である、被覆活物質。【選択図】図１ |
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