Research output: Contribution to journal › Article › peer-review
Effect of modification of multi-walled carbon nanotubes with nitrogen-containing polymers on the electrochemical performance of Pt/CNT catalysts in PEMFC. / Gribov, E. N.; Kuznetsov, A. N.; Golovin, V. A. et al.
In: Materials for Renewable and Sustainable Energy, Vol. 8, No. 1, 7, 01.03.2019.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Effect of modification of multi-walled carbon nanotubes with nitrogen-containing polymers on the electrochemical performance of Pt/CNT catalysts in PEMFC
AU - Gribov, E. N.
AU - Kuznetsov, A. N.
AU - Golovin, V. A.
AU - Krasnikov, D. V.
AU - Kuznetsov, V. L.
PY - 2019/3/1
Y1 - 2019/3/1
N2 - The influence of the surface modification of multi-walled carbon nanotubes (MWCNT) with nitrogen-containing compounds on the performance of 40 wt% Pt/MWCNT catalysts in the oxygen electroreduction reaction (ORR) was investigated using a rotating disk electrode (RDE) at 10–35 °C in 0.1 M HClO 4 as electrolyte in electrochemical cell, and in a hydrogen–oxygen polymer electrolyte membrane fuel cell (PEMFC) at 82 °C. The catalysts were characterized by low-temperature nitrogen adsorption, XPS, TEM, gas-phase CO titration, electrooxidation of the adsorbed CO monolayer, and cyclic voltammetry. It was shown that the modification of MWCNT with melamine–formaldehyde resin leads to the surface nitrogen concentration up to 8.3 at.% (CNT-MF sample). The 40 wt% Pt/CNT-MF catalyst with 0.1 mg cm −2 Pt loading on the cathode showed a good performance in PEMFC (~ 0.61 W cm −2 ) and a high utilization ratio (0.84) of Pt in membrane electrode assembly as compared to Pt/CNT catalyst (~ 0.37 W cm −2 and utilization of 0.29). The higher power density of nitrogen-modified catalysts was ascribed to a higher utilization of Pt in the electrode layer.
AB - The influence of the surface modification of multi-walled carbon nanotubes (MWCNT) with nitrogen-containing compounds on the performance of 40 wt% Pt/MWCNT catalysts in the oxygen electroreduction reaction (ORR) was investigated using a rotating disk electrode (RDE) at 10–35 °C in 0.1 M HClO 4 as electrolyte in electrochemical cell, and in a hydrogen–oxygen polymer electrolyte membrane fuel cell (PEMFC) at 82 °C. The catalysts were characterized by low-temperature nitrogen adsorption, XPS, TEM, gas-phase CO titration, electrooxidation of the adsorbed CO monolayer, and cyclic voltammetry. It was shown that the modification of MWCNT with melamine–formaldehyde resin leads to the surface nitrogen concentration up to 8.3 at.% (CNT-MF sample). The 40 wt% Pt/CNT-MF catalyst with 0.1 mg cm −2 Pt loading on the cathode showed a good performance in PEMFC (~ 0.61 W cm −2 ) and a high utilization ratio (0.84) of Pt in membrane electrode assembly as compared to Pt/CNT catalyst (~ 0.37 W cm −2 and utilization of 0.29). The higher power density of nitrogen-modified catalysts was ascribed to a higher utilization of Pt in the electrode layer.
KW - Multi-walled carbon nanotubes
KW - Nitrogen modification
KW - Nitrogen–carbon nanotubes
KW - Oxygen reduction reaction
KW - Platinum electrocatalyst
KW - Polymer electrolyte membrane fuel cells
KW - Pt utilization
KW - ELECTRODES
KW - PLATINUM CATALYSTS
KW - FUEL-CELLS
KW - Nitrogen-carbon nanotubes
KW - OXYGEN REDUCTION REACTION
KW - ELECTROCATALYSTS
KW - ORR
KW - CO MONOLAYER OXIDATION
KW - CATHODE
KW - SUPPORT
KW - NANOPARTICLES
UR - http://www.scopus.com/inward/record.url?scp=85061661465&partnerID=8YFLogxK
U2 - 10.1007/s40243-019-0143-2
DO - 10.1007/s40243-019-0143-2
M3 - Article
AN - SCOPUS:85061661465
VL - 8
JO - Materials for Renewable and Sustainable Energy
JF - Materials for Renewable and Sustainable Energy
SN - 2194-1459
IS - 1
M1 - 7
ER -
ID: 18561279