Amphoteric proton exchange membrane is a kind of polymer membranes with proton-conducting function

which contains both acidic and basic structure. Strong structural design and special interaction of molecular chains make it excellent blocking performance of methanol or vanadium ion while conducting

has caused wide attention in recent years. In this paper

the relevant research results at home and abroad were reviewed

and the amphoteric proton exchange membrane was defined. According to chemical structure and preparation methods

it was divided into three types: (1) alkaline polymer and high boiling acid doping type

(2) acid and alkaline polymer blends

and (3) the intrinsic properties of polymers containing the acid-base structure

and their applications in proton exchange membrane fuel cells and vanadium redox flow batteries were discussed.