TY - JOUR
T1 - Preparation and catalytic activity for oxygen reduction reaction of tungsten nitirde-tungsten/nitrogen doped ordered mesoporous carbon
AU - Guo, Hu
AU - Li, Ling Hui
AU - Wang, Tao
AU - Fan, Xiao Li
AU - Song, Li
AU - Gong, Hao
AU - Xia, Wei
AU - Jiang, Cheng
AU - Gao, Bin
AU - He, Jian Ping
N1 - Publisher Copyright:
© 2019, Chinese Chemical Society. All right reserved.
PY - 2018
Y1 - 2018
N2 - Tungsten nitride-Tungsten/nitrogen doped ordered mesoporous carbon (WN/W-NOMC), as a non-precious-metal cathode catalyst for oxygen reduction reaction (ORR), was successfully synthesized through a soft-template method. The amount of nitrogen was adjusted by urea, and when the content of nitrogen was 7% (w/w), the obtained composite had highly ordered mesoporous structure, and its specific surface area reached to 835 m2-g-1. Transmission electron microscope (TEM) shows that the catalytic particles were uniform supported on NOMC. ORR test was conducted in O2-staturated 0.1 mol-L-1 KOH solution, the oneset potential is 0.87 V (vs RHE) and the limiting current density is 4.49 mA-cm"2. The transfer number of electron was 3.4, which was close to commercial 20%(w/w) Pt/C (3.8), indicated that WN-NOMC exhibited an approximate 4e- transfer pathway during the ORR process. Though the catalytic activity is less than Pt C, the excellent methanol tolerance and long-time electrochemical stability make WN-W/NOMC to be a potential electrode catalyst for ORR.
AB - Tungsten nitride-Tungsten/nitrogen doped ordered mesoporous carbon (WN/W-NOMC), as a non-precious-metal cathode catalyst for oxygen reduction reaction (ORR), was successfully synthesized through a soft-template method. The amount of nitrogen was adjusted by urea, and when the content of nitrogen was 7% (w/w), the obtained composite had highly ordered mesoporous structure, and its specific surface area reached to 835 m2-g-1. Transmission electron microscope (TEM) shows that the catalytic particles were uniform supported on NOMC. ORR test was conducted in O2-staturated 0.1 mol-L-1 KOH solution, the oneset potential is 0.87 V (vs RHE) and the limiting current density is 4.49 mA-cm"2. The transfer number of electron was 3.4, which was close to commercial 20%(w/w) Pt/C (3.8), indicated that WN-NOMC exhibited an approximate 4e- transfer pathway during the ORR process. Though the catalytic activity is less than Pt C, the excellent methanol tolerance and long-time electrochemical stability make WN-W/NOMC to be a potential electrode catalyst for ORR.
KW - Electrocatalysis
KW - Fuel cells
KW - Ordered mesoporous carbon
KW - Oxygen reduction reaction
KW - Tungsten nitride
UR - http://www.scopus.com/inward/record.url?scp=85069685156&partnerID=8YFLogxK
U2 - 10.11862/CJIC.2018.263
DO - 10.11862/CJIC.2018.263
M3 - 文章
AN - SCOPUS:85069685156
SN - 1001-4861
VL - 34
SP - 2032
EP - 2040
JO - Chinese Journal of Inorganic Chemistry
JF - Chinese Journal of Inorganic Chemistry
IS - 11
M1 - 1001-4861(2019)11-2032-09
ER -