Production process for electrode material, electrode and electric storage device
The present invention relates to a production process for an electrode material, an electrode and an electric storage device, and the production process for an electrode material comprises a step of heating a polymer having a silicon-containing unit and a silicon-non-containing unit.
1. A process for producing an electrode material, comprising:
heating a polymer having a silicon-containing unit and a silicon-non-containing unit,
wherein the electrode material comprises the heated polymer and has a 50% volume cumulative diameter of 0.1 to 40 μm.
2. The process of claim 1 ,
wherein the silicon-containing unit is a unit having a repeating unit comprising a silicon atom, and
the silicon-non-containing unit is a unit having a repeating unit comprising no silicon atom.
3. The process of claim 1 ,
wherein the silicon-containing unit is a unit having at least one structure selected from the group consisting of a polysiloxane structure, a polysilane structure, a polysilazane structure and a polycarbosilane structure.
4. The process of claim 1 ,
wherein the silicon-non-containing unit is a unit having at least one structure selected from the group consisting of an epoxy resin structure, a phenolic resin structure, a vinyl polymer structure, a polyamide acid structure, a polyimide structure, a polyamideimide structure and a polyurethane structure.
5. An electrode, comprising:
an electrode material obtained by the process of claim 1 .
6. An electric storage device, comprising:
the electrode of claim 5 as a negative electrode.
7. The process of claim 1 ,
wherein the electrode material is an active material.
8. The process of claim 1 , further comprising:
pulverizing the heated polymer such that the electrode material has the 50% volume cumulative diameter of 0.1 to 40 μm.
9. The process of claim 8 , further comprising:
preheating the polymer having a silicon-containing unit and a silicon-non-containing unit at a temperature of from 200 to 400 ° C. prior to the heating,
wherein, in the heating, the polymer having a silicon-containing unit and a silicon-non-containing unit is heated at a temperature of from 600 to 3,000 ° C.
10. An electrode, comprising:
an electrode material obtained by the process of claim 1 ; and
a binder.
11. A process for producing an electrode material, comprising:
heating a composition comprising a polymer having a silicon-containing unit and a silicon-non-containing unit and a carbon material,
wherein the electrode material comprises the heated polymer and has a 50% volume cumulative diameter of 0.1 to 40 μm.
12. The process of claim 11 ,
wherein the silicon-containing unit is a unit having a repeating unit comprising a silicon atom, and
the silicon-non-containing unit is a unit having a repeating unit comprising no silicon atom.
13. The process of claim 11 ,
wherein the silicon-containing unit is a unit having at least one structure selected from the group consisting of a polysiloxane structure, a polysilane structure, a polysilazane structure and a polycarbosilane structure.
14. The process of claim 11 ,
wherein the silicon-non-containing unit is a unit having at least one structure selected from the group consisting of an epoxy resin structure, a phenolic resin structure, a vinyl polymer structure, a polyamide acid structure, a polyimide structure, a polyamideimide structure and a polyurethane structure.
15. The process of claim 11 ,
wherein the carbon material is graphite.
16. An electrode, comprising:
an electrode material obtained by the process of claim 11 .
17. An electric storage device, comprising:
the electrode of claim 16 as a negative electrode.
18. The process of claim 11 ,
wherein the electrode material is an active material.
19. The process of claim 11 , further comprising:
pulverizing the heated polymer such that the electrode material has the 50% volume cumulative diameter of 0.1 to 40 μm.
20. An electrode, comprising:
an electrode material obtained by the process of claim 11 ; and
a binder.