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A platform for research: civil engineering, architecture and urbanism
ELECTRODE MATERIAL, METHOD FOR MANUFACTURING ELECTRODE MATERIAL, ELECTRODE AND LITHIUM ION BATTERY
To provide an electrode material capable of obtaining a lithium ion battery which is capable of realizing coating with an excellent carbonaceous film while suppressing growth of particles, reducing DC resistance, and improving discharge capacity and input/output characteristics, a method for manufacturing the electrode material, an electrode using the electrode material, and a lithium ion battery with a positive electrode including the electrode.SOLUTION: An electrode material includes primary particles of an electrode active material and secondary particles each of which is an aggregate of the primary particles, and a carbonaceous film that covers each of the primary particles of the electrode active material and the secondary particles each of which is an aggregate of the primary particles, and the ratio of a pore volume with a pore diameter of 50 nm or less to a pore volume with a pore diameter of 300 nm or less which is required by a nitrogen adsorption method is 40% or more.SELECTED DRAWING: None
【課題】粒子の成長を抑制しつつ、良質な炭素質被膜による被覆を実現するとともに、直流抵抗を低下させ、放電容量及び入出力特性を高めることが可能なリチウムイオン電池を得ることができる電極材料、該電極材料の製造方法、該電極材料を用いてなる電極、及び該電極からなる正極を備えたリチウムイオン電池を提供する。【解決手段】電極活物質の一次粒子及び該一次粒子の集合体である二次粒子と、前記電極活物質の一次粒子及び該一次粒子の集合体である二次粒子を被覆する炭素質被膜とを有する炭素質被覆電極活物質を含み、窒素吸着法により求められる細孔径３００ｎｍ以下の細孔容積に占める細孔径５０ｎｍ以下の細孔容積の割合が４０％以上であることを特徴とする電極材料。【選択図】なし
ELECTRODE MATERIAL, METHOD FOR MANUFACTURING ELECTRODE MATERIAL, ELECTRODE AND LITHIUM ION BATTERY
To provide an electrode material capable of obtaining a lithium ion battery which is capable of realizing coating with an excellent carbonaceous film while suppressing growth of particles, reducing DC resistance, and improving discharge capacity and input/output characteristics, a method for manufacturing the electrode material, an electrode using the electrode material, and a lithium ion battery with a positive electrode including the electrode.SOLUTION: An electrode material includes primary particles of an electrode active material and secondary particles each of which is an aggregate of the primary particles, and a carbonaceous film that covers each of the primary particles of the electrode active material and the secondary particles each of which is an aggregate of the primary particles, and the ratio of a pore volume with a pore diameter of 50 nm or less to a pore volume with a pore diameter of 300 nm or less which is required by a nitrogen adsorption method is 40% or more.SELECTED DRAWING: None
【課題】粒子の成長を抑制しつつ、良質な炭素質被膜による被覆を実現するとともに、直流抵抗を低下させ、放電容量及び入出力特性を高めることが可能なリチウムイオン電池を得ることができる電極材料、該電極材料の製造方法、該電極材料を用いてなる電極、及び該電極からなる正極を備えたリチウムイオン電池を提供する。【解決手段】電極活物質の一次粒子及び該一次粒子の集合体である二次粒子と、前記電極活物質の一次粒子及び該一次粒子の集合体である二次粒子を被覆する炭素質被膜とを有する炭素質被覆電極活物質を含み、窒素吸着法により求められる細孔径３００ｎｍ以下の細孔容積に占める細孔径５０ｎｍ以下の細孔容積の割合が４０％以上であることを特徴とする電極材料。【選択図】なし
ELECTRODE MATERIAL, METHOD FOR MANUFACTURING ELECTRODE MATERIAL, ELECTRODE AND LITHIUM ION BATTERY
電極材料、該電極材料の製造方法、電極、及びリチウムイオン電池
ONO KOJI (author) / NINSOKU AKIRA (author) / KOYAMA MASATAKA (author)
2020-04-02
Patent
Electronic Resource
Japanese
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