Text this: Full-hexacyanometallate aqueous redox flow batteries exceeding 1.5 V in an aqueous solution

__    __    _____     _____     ______            
\ \\ / //  |  ___||  |__  //   /_   _//     ___   
 \ \/ //   | ||__      / //     -| ||-     /   || 
  \  //    | ||__     / //__    _| ||_    | [] || 
   \//     |_____||  /_____||  /_____//    \__ || 
    `      `-----`   `-----`   `-----`      -|_|| 
                                             `-`