TY - JOUR
T1 - Oxygen reduction reaction of (C-PCTNB@CNTs)
T2 - A nitrogen and phosphorus dual-doped carbon electro-catalyst derived from polyphosphazenes
AU - Dar, Sami Ullah
AU - Ud Din, Muhammad Aizaz
AU - Hameed, Muhammad Usman
AU - Ali, Shafqat
AU - Akram, Raheel
AU - Wu, Zhanpeng
AU - Wu, Dezhen
N1 - Publisher Copyright:
© 2017
PY - 2018/1/1
Y1 - 2018/1/1
N2 - This research describes the synthesis of a novel type of poly [cyclotriphosphazene-co-1,3,5-triol nitrobenzene] (PCTNB) microspheres with uniform size and diameter of more than 2 μm having well characterization. These microspheres are further used to wrap the CNTs by a facile route using template based non-covalent method to form PCTNB@CNTs composite. This composite is further well analyzed before it is subjected to pyrolysis. The direct carbonization of the PCTNB@CNTs is performed at 600 °C at a rate of 5 °C/min under N2 atmosphere to render the N, P, O doped carbonized PCTNB@CNTs having enhanced electronic features to be applied as an ORR electrocatalysts in fuel cells accompanied by TEM, XPS, Raman, FT-IR, TGA and BET analyses. Here, we have designed a metal-free, N, P, O doped (C-PCTNB@CNTs) electro-catalyst which exhibit significantly high ORR performance in acidic PEM cells showing much higher onset potential of (0.94 V) and half-wave potential of (0.85 V) with electron transfer number (n) 3.9 at 0.4–0.7 V as compared to other non-metallic electro-catalysts. Thus, (C-PCTNB@CNTs) is a metal-free, methanol tolerant carbon-based ORR catalyst, and it opens up new avenues for clean energy generation for affordable and durable fuel cells.
AB - This research describes the synthesis of a novel type of poly [cyclotriphosphazene-co-1,3,5-triol nitrobenzene] (PCTNB) microspheres with uniform size and diameter of more than 2 μm having well characterization. These microspheres are further used to wrap the CNTs by a facile route using template based non-covalent method to form PCTNB@CNTs composite. This composite is further well analyzed before it is subjected to pyrolysis. The direct carbonization of the PCTNB@CNTs is performed at 600 °C at a rate of 5 °C/min under N2 atmosphere to render the N, P, O doped carbonized PCTNB@CNTs having enhanced electronic features to be applied as an ORR electrocatalysts in fuel cells accompanied by TEM, XPS, Raman, FT-IR, TGA and BET analyses. Here, we have designed a metal-free, N, P, O doped (C-PCTNB@CNTs) electro-catalyst which exhibit significantly high ORR performance in acidic PEM cells showing much higher onset potential of (0.94 V) and half-wave potential of (0.85 V) with electron transfer number (n) 3.9 at 0.4–0.7 V as compared to other non-metallic electro-catalysts. Thus, (C-PCTNB@CNTs) is a metal-free, methanol tolerant carbon-based ORR catalyst, and it opens up new avenues for clean energy generation for affordable and durable fuel cells.
KW - Acidic PEM cells
KW - DMFCs
KW - Heteroatom doped material
KW - Metal-free electro-catalyst
KW - Oxygen reduction reaction
KW - Polyphosphazenes
UR - http://www.scopus.com/inward/record.url?scp=85032931304&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2017.11.006
DO - 10.1016/j.jpowsour.2017.11.006
M3 - 文章
AN - SCOPUS:85032931304
SN - 0378-7753
VL - 373
SP - 61
EP - 69
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -