Research Article
Sulfur-Rich N-Doped Co9S8 Catalyst for Highly Efficient and Durable Overall Water Electrolysis Application
Figure 3
FE-SEM images of the (a, b) CoS and (c, d) S,N-Co9S8 catalyst electrodes at low and high magnifications.
(a) |
(b) |
(c) |
(d) |