Abstract:
atalyst for oxygen evolution reaction
(OER) and oxygen reduction reaction
(ORR) are at the heart of key renewable energy technologies such as water splitting
and rechargeable batteries. But developing low cost oxygen electrode catalyst with
high activity at low over
potential remains a great c
hallenge. Owing to the high cost of
Ruthenium and Iridium metal based oxides and its limited availability, research on
alternative catalyst based on non
-
noble metals and their oxides have been pursued
worldwide. Spinel
-
type cobalt oxide, Co
3
O
4
, with multip
le oxidation states of cobalt, is
an alternate choice for OER and ORR activities. The objective of the present work is
to exploit the scope of cobalt oxide and to selectively tune its electrocatalytic activity
by substitution by other transition metal ions
to make a better electrocatalyst with
higher activity and improved stability. Here we synthesized Manganese cobalt spinel
oxide nanocrystals with different manganese content by autocombustion method and
studied the effect on the el
e
ctrocatalytic Oxygen re
duction and oxygen evolution
reaction to make use this as a bifunctional catalyst in electrochemical energy devices
such as rechargeable Metal
-
Air batteries
