File Name : figure s1.jpg

Caption : figure s1. fesem images of lto electrodes of (a)-(c) fresh batteries (d)-(f) cycled batteries; internal sem images by fib cutting of lto electrodes of (g,h) fresh batteries and (i,j) cycled batteries.

File Name : figure s2.jpg

Caption : figure s2. fesem images of ncm electrodes of batteries cycled at (a)-(c) 25 oc (d)-(f) 35 oc; internal sem images by fib cutting of ncm electrodes of batteries cycled at (g)-(i) 25 oc (j)-(l) 35 oc.

File Name : figure s3.jpg

Caption : figure s3. fesem images of the two sides of separators of fresh batteries (a-c, g-i) and cycled batteries (d-f, j-l). 

File Name : figure s4.png

Caption : figure s4. images by eds of the distribution of elements on two sides (pp: a-j, al2o3: k-t) of separators of fresh batteries (a-e, k-o) and cycled batteries (f-j, p-t).