TY - JOUR
T1 - Novel hexagonal Bi2O2CO3 porous nanoplate/nitrogen-doped graphene nanomaterial enhanced electrochemical properties of oxygen reduction reaction in acidic medium for fuel cells
AU - Qin, Xiulan
AU - Huang, Ying
AU - Wang, Ke
AU - Xu, Tingting
AU - Li, Suping
AU - Zhao, Ming
AU - Wang, Yanli
AU - Chen, Qian
N1 - Publisher Copyright:
© 2019
PY - 2019/11
Y1 - 2019/11
N2 - A template-free method is successfully designed to originally synthesize novel porous Bi2O2CO3 hexagonal nanoplate (PBHN) and the Bi2O2CO3 hexagonal nanoplate/nitrogen-doped graphene nanomaterials (PBHN/NG). Notably, PBHN-2 and PBHN/NG-2 have not yet been reported in previous literatures. For the first time, PBHN/NG-2 as the oxygen reduction reaction (ORR) catalyst has been investigated in detail for cathode of fuel cell. The measurement results show that PBHN/NG-2 has exhibited fascinating ORR performances, duo to its orthogonal-layered porous structures from porous Bi2O2CO3 and NG sheets. The values of onset potential and limiting current density for PBHN/NG-2 are 1.179 V and 7.38 mA cm−2 in 0.1 M HClO4 respectively. The PBHN/NG-2 possess small electrochemical impedance and good methanol immunity in 0.1 M HClO4 media. Remarkably, the relative current density of PBHN/NG-2 in acidic electrolyte can still keep 98.58% of its original density after 18000 s durable measurement. Therefore, the PBHN/NG-2 is a promising ORR catalyst to solve the problems of high costs, sluggish ORR kinetics and low durability, applied in fuel cells, metal-air batteries and other renewable energy devices.
AB - A template-free method is successfully designed to originally synthesize novel porous Bi2O2CO3 hexagonal nanoplate (PBHN) and the Bi2O2CO3 hexagonal nanoplate/nitrogen-doped graphene nanomaterials (PBHN/NG). Notably, PBHN-2 and PBHN/NG-2 have not yet been reported in previous literatures. For the first time, PBHN/NG-2 as the oxygen reduction reaction (ORR) catalyst has been investigated in detail for cathode of fuel cell. The measurement results show that PBHN/NG-2 has exhibited fascinating ORR performances, duo to its orthogonal-layered porous structures from porous Bi2O2CO3 and NG sheets. The values of onset potential and limiting current density for PBHN/NG-2 are 1.179 V and 7.38 mA cm−2 in 0.1 M HClO4 respectively. The PBHN/NG-2 possess small electrochemical impedance and good methanol immunity in 0.1 M HClO4 media. Remarkably, the relative current density of PBHN/NG-2 in acidic electrolyte can still keep 98.58% of its original density after 18000 s durable measurement. Therefore, the PBHN/NG-2 is a promising ORR catalyst to solve the problems of high costs, sluggish ORR kinetics and low durability, applied in fuel cells, metal-air batteries and other renewable energy devices.
KW - Fuel cells
KW - Orthogonal-layered porous structures
KW - Oxygen reduction reaction
KW - Porous BiOCO hexagonal nanoplate
UR - http://www.scopus.com/inward/record.url?scp=85067422370&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2019.06.028
DO - 10.1016/j.carbon.2019.06.028
M3 - 文章
AN - SCOPUS:85067422370
SN - 0008-6223
VL - 152
SP - 459
EP - 473
JO - Carbon
JF - Carbon
ER -