A.It still requires further improvement. B.It is a little complex to charge a cell phone with the material. C.It can produce the power needed by an iPhone. D.It is a little expensive to manufacture this material.
A.It still requires further improvement.
B.It is a little complex to charge a cell phone with the material.
C.It can produce the power needed by an iPhone.
D.It is a little expensive to manufacture this material.