Highly efficient electrocatalysts for oxygen reduction based on 2D covalent organic polymers complexed with non-precious metals.
A class of 2D covalent organic polymers (COPs) incorporating a metal (such as Fe, Co, Mn) with precisely controlled locations of nitrogen heteroatoms and holes were synthesized from various N-containing metal-organic complexes (for example, metal-porphyrin complexes) by a nickel-catalyzed Yamamoto reaction. Subsequent carbonization of the metal-incorporated COPs led to the formation of COP-derived graphene analogues, which acted as efficient electrocatalysts for oxygen reduction in both alkaline and acid media with a good stability and free from any methanol-crossover/CO-poisoning effects.
Centre of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 (USA); State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029 (P.R. China).
Zhonghua
Z
Xiang
Yuhua
Y
Xue
Dapeng
D
Cao
Ling
L
Huang
Jian-Feng
JF
Chen
Liming
L
Dai
covalent organic polymers; electrocatalysts; graphene analogues; metal-organic frameworks; oxygen reduction reaction