Light electrochemical reaction device

The utility model discloses a light electrochemical reaction device, wherein, include: reaction cell body, one of them lateral wall that should react the cell body offered one with the communicating first opening of inner chamber, working electrode, it is formed by FTO or ITO material producing, this working electrode lid is located outside the first opening, reference electrode, its middle part cover is located the roof of reaction cell body, and this reference electrode's lower extreme extends to in the inner chamber of reaction cell body, and to the electrode, overlap in the middle part of it and locate the roof of reaction cell body, and this lower extreme to the electrode extends to in the inner chamber of reaction cell body. The utility model discloses place the light source in covering the first open -ended outside that is equipped with working electrode, the light that the light source sent shines earlier working electrode goes up reentrant arriving in the solution in the internal chamber of reaction tank to avoided light to shine the loss because of being produced by solution absorption or scattering of light that working electrode caused again through solution earlier.