TY - JOUR
T1 - Core-shell carbon materials derived from metal-organic frameworks as an efficient oxygen bifunctional electrocatalyst
AU - Wang, Zhijuan
AU - Lu, Yizhong
AU - Yan, Ya
AU - Larissa, Thia Yi Ping
AU - Zhang, Xiao
AU - Wuu, Delvin
AU - Zhang, Hua
AU - Yang, Yanhui
AU - Wang, Xin
PY - 2016/12
Y1 - 2016/12
N2 - Noble-metal free and durable electrocatalysts with high catalytic activity toward oxygen reduction and evolution reactions are crucial to high-performance primary or rechargeable Zn-air batteries (ZnABs) and fuel cells. Herein, we report an efficient bifunctional electrocatalyst with core-shell structure obtained from ZIF-8@ZIF-67 through hydrothermal and carbonization treatment. The resulted material, i.e. highly graphitic carbon (GC, carbonized from ZIF-67) on nitrogen-doped carbon (NC, carbonized from ZIF-8) (NC@GC), combines the distinguished advantages of NC, including high surface area, presence of Co doping and high nitrogen content, and those of GC including high crystallinity, good conductivity and stability of GC. This unique core-shell structure with potential synergistic interaction leads to high activities towards oxygen reduction and oxygen evolution reactions. As a proof-of-concept, the as-prepared NC@GC catalyst exhibits excellent performance in the primary and rechargeable ZnABs. This study might inspire new thought on the development of carbon-based electrocatalytic materials derived from MOF materials.
AB - Noble-metal free and durable electrocatalysts with high catalytic activity toward oxygen reduction and evolution reactions are crucial to high-performance primary or rechargeable Zn-air batteries (ZnABs) and fuel cells. Herein, we report an efficient bifunctional electrocatalyst with core-shell structure obtained from ZIF-8@ZIF-67 through hydrothermal and carbonization treatment. The resulted material, i.e. highly graphitic carbon (GC, carbonized from ZIF-67) on nitrogen-doped carbon (NC, carbonized from ZIF-8) (NC@GC), combines the distinguished advantages of NC, including high surface area, presence of Co doping and high nitrogen content, and those of GC including high crystallinity, good conductivity and stability of GC. This unique core-shell structure with potential synergistic interaction leads to high activities towards oxygen reduction and oxygen evolution reactions. As a proof-of-concept, the as-prepared NC@GC catalyst exhibits excellent performance in the primary and rechargeable ZnABs. This study might inspire new thought on the development of carbon-based electrocatalytic materials derived from MOF materials.
KW - Electrocatalyst
KW - Metal-organic frameworks
KW - Oxygen evolution reaction
KW - Oxygen reduction reaction
KW - Zn-air battery
UR - http://www.scopus.com/inward/record.url?scp=84994227170&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84994227170&origin=recordpage
U2 - 10.1016/j.nanoen.2016.10.017
DO - 10.1016/j.nanoen.2016.10.017
M3 - RGC 21 - Publication in refereed journal
SN - 2211-2855
VL - 30
SP - 368
EP - 378
JO - Nano Energy
JF - Nano Energy
ER -
