The invention discloses an ion transport composite membrane, electrochromic glass containing the composite membrane and preparation methods thereof. The ion transport composite membrane of the present invention sequentially comprises an outer layer A, an inner layer B and an outer layer A’. Each of the outer layer A and the outer layer A’ independently contains: 0‑5 wt% lithium salt, 5‑20 wt% plasticizer, 0‑2 wt% other auxiliaries, with the balance being PVB resin, wherein the weight percentage is based on the total weight of the outer layer A or the outer layer A’. The inner layer B contains 3‑15 wt% lithium salt, more than 20 to 40 wt% plasticizer, 0‑2 wt% other auxiliaries, with the balance being PVB resin, wherein the weight percentage is based on the total weight of the inner layer B. The ion transport composite membrane of the invention has excellent ion conductivity and air exhaust performance without deterioration of mechanical properties.
Area Code: CN
Application Number: CN202010073909.5
