أرسل هذا في رسالة قصيرة: Ni- and/or Mn-based layered transition metal oxides as cathode materials for sodium ion batteries : status, challenges and countermeasures

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