CPC H01M 8/0273 (2013.01) [H01M 8/0276 (2013.01); H01M 8/188 (2013.01); H01M 8/2455 (2013.01); H01M 8/2483 (2016.02); H01M 4/75 (2013.01); H01M 2004/021 (2013.01)] | 3 Claims |
1. A flow battery stack, characterized in that, the flow battery stack is assembled by using an electrode structure, and after being compressed and assembled under a stack preload of 0.1-0.25 MPa, a porosity of an electrode fiber of each layer in the stack is compressed to 91-92%, wherein
a surface structure on both sides of the electrode structure is a spinous or needlelike structure, and a height of the spinous or needlelike structure is in an undulation form, and
the surface of the electrode structure is formed by entanglement of needle-like structure tows whose ends are perpendicular to the electrode surface, and a diameter of the needle-like structure tows is 12-18 μm.
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