Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Dual-nitrogen-source engineered Fe-N x moieties as a booster for oxygen electroreduction. / Wang, Dan; Xiao, Lihui; Yang, Peixia; Xu, Zhengrui; Lu, Xiangyu; Du, Lei; Levin, Oleg; Ge, Liping; Pan, Xiaona; Zhang, Jinqiu; An, Maozhong.
в: Journal of Materials Chemistry A, Том 7, № 18, 14.05.2019, стр. 11007-11015.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Dual-nitrogen-source engineered Fe-N x moieties as a booster for oxygen electroreduction
AU - Wang, Dan
AU - Xiao, Lihui
AU - Yang, Peixia
AU - Xu, Zhengrui
AU - Lu, Xiangyu
AU - Du, Lei
AU - Levin, Oleg
AU - Ge, Liping
AU - Pan, Xiaona
AU - Zhang, Jinqiu
AU - An, Maozhong
PY - 2019/5/14
Y1 - 2019/5/14
N2 - Metal-air batteries, particularly Zn-air batteries, have triggered considerable enthusiasm of communities due to their high theoretical power density. Developing highly active, cost-effective and alternative non-precious metal catalysts for the oxygen reduction reaction (ORR) is pivotal for popularizing zinc-air batteries. The rational design and synthesis of this type of catalyst are therefore critical, but it is still challenging to control the well-defined active sites as expected. Herein, we report a dual-nitrogen-source mediated route for synergistically controlling the formation of active Fe-N x moieties that are embedded in the carbon matrix. The facile control of coordination structures of precursors by this dual-nitrogen-source approach is revealed to play a key role in this report. Impressively, the optimized dual-nitrogen-source derived catalyst (i.e. Fe-N-C-800) exhibits prominently enhanced ORR activity with a half-wave potential of 0.883 V in alkaline electrolyte, higher by 32 mV and 72 mV than those derived from individual nitrogen sources, which is also further evaluated in primary Zn-air batteries. The enhanced ORR activity of Fe-N-C-800 is attributed to the rich Fe-N x active sites derived from the dual-nitrogen-source approach.
AB - Metal-air batteries, particularly Zn-air batteries, have triggered considerable enthusiasm of communities due to their high theoretical power density. Developing highly active, cost-effective and alternative non-precious metal catalysts for the oxygen reduction reaction (ORR) is pivotal for popularizing zinc-air batteries. The rational design and synthesis of this type of catalyst are therefore critical, but it is still challenging to control the well-defined active sites as expected. Herein, we report a dual-nitrogen-source mediated route for synergistically controlling the formation of active Fe-N x moieties that are embedded in the carbon matrix. The facile control of coordination structures of precursors by this dual-nitrogen-source approach is revealed to play a key role in this report. Impressively, the optimized dual-nitrogen-source derived catalyst (i.e. Fe-N-C-800) exhibits prominently enhanced ORR activity with a half-wave potential of 0.883 V in alkaline electrolyte, higher by 32 mV and 72 mV than those derived from individual nitrogen sources, which is also further evaluated in primary Zn-air batteries. The enhanced ORR activity of Fe-N-C-800 is attributed to the rich Fe-N x active sites derived from the dual-nitrogen-source approach.
KW - REDUCTION REACTION
KW - ACTIVE-SITES
KW - EFFICIENT ELECTROCATALYSTS
KW - MESOPOROUS CARBON
KW - GRAPHENE
KW - METAL
KW - IRON
KW - CATALYSTS
KW - NANOPARTICLES
KW - PERFORMANCE
UR - http://www.scopus.com/inward/record.url?scp=85065483479&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/dualnitrogensource-engineered-fen-x-moieties-booster-oxygen-electroreduction
U2 - 10.1039/c9ta01953g
DO - 10.1039/c9ta01953g
M3 - Article
AN - SCOPUS:85065483479
VL - 7
SP - 11007
EP - 11015
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 18
ER -
ID: 41842973