Graphite film, laminate film, method for producing same, and electrode material
A film includes a film body including graphite, and at least one fragment including graphite and formed on one or more surfaces of the film body. The film has a water contact angle of 50 degrees or greater and a glossiness of 20 or lower.
1. A film, comprising:
a film body comprising graphite; and
a plurality of fragments formed on at least one surface of the film body, wherein all fragments in the plurality of the fragments comprise graphite,
wherein the film has a water contact angle of 50 degrees or greater and a glossiness of 20 or lower,
wherein the plurality of the fragments are formed on the at least one surface at a density of 5/100 μm or higher,
wherein each fragment of the plurality of the fragments has a maximum length of from 0.3 μm to 20 μm, and
an end of each fragment of the plurality of the fragments is in contact with the at least one surface of the film body while another end of each of the fragments is detached from the at least one surface of the film body.
2. The film of claim 1 , wherein the glossiness is 5 or lower.
3. The film of claim 1 , wherein each fragment of the plurality of the fragments has a maximum length of from 10 μm to 20 μm.
4. A laminate, comprising:
the film of claim 1 ; and
at least one layer formed on at least one surface of the film and comprising at least one material selected from the group consisting of a metal, a resin, a metal oxide, a metal carbide, a metal nitride, a metal boride, and a metal silicide.
5. The laminate of claim 4 , wherein the laminate has a sheet resistance in a planar direction of 25 mΩ/□ or lower.
6. The laminate of claim 4 , wherein the at least one layer formed on at least one surface of the film comprises a resin, and the resin is a conductive resin.
7. The laminate of claim 4 , wherein the at least one layer is formed only on one surface of the film.
8. The laminate of claim 4 , wherein the at least one layer has an arithmetic mean roughness of 0.5 μm to 10 μm as measured in accordance with JIS B 0601:2001.
9. An electrode material, comprising:
the laminate of claim 4 , and
a metal foil.
10. The film of claim 1 , wherein each fragment of the plurality of the fragments has a maximum length of from 6 μm to 15 μm.