Figure 1. Possible positions (2a, 2b, 4e, 8 h’ and 8 h) in the tunnel of α-MnO2 for the insertion of univalent and multivalent ions.
(The pictures are drawn by C. Xu and S. Shi).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.