TY - JOUR
T1 - Bimetallic-MOF Derived Carbon with Single Pt Anchored C4 Atomic Group Constructing Super Fuel Cell with Ultrahigh Power Density And Self-Change Ability
AU - Chai, Lulu
AU - Song, Jinlu
AU - Kumar, Anuj
AU - Miao, Rui
AU - Sun, Yanzhi
AU - Liu, Xiaoguang
AU - Yasin, Ghulam
AU - Li, Xifei
AU - Pan, Junqing
N1 - Funding Information:
This work was financially supported by the National Key Research and Development Program of China (2019YFC1908304), National Natural Science Foundation of China (21676022 & 21706004), and the Fundamental Research Funds for the Central Universities (BHYC1701A). The authors would like to thank Shiyanjia Lab ( www.shiyanjia.com ) for the XAFS measurement. The authors would like to thank Suzhou Deyo Bot Advanced Materials Co., Ltd. ( www.dy‐test.com ) for providing support on material characterization. The authors thank Prof. Xiaoming Sun from Beijing University of Chemical Technology and Maohong Fan from University of Wyoming and Georgia Institute of Technology for the paper revise.
Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2024/1/4
Y1 - 2024/1/4
N2 - Pursuing high power density with low platinum catalysts loading is a huge challenge for developing high-performance fuel cells (FCs). Herein, a new super fuel cell (SFC) is proposed with ultrahigh output power via specific electric double-layer capacitance (EDLC) + oxygen reduction reaction (ORR) parallel discharge, which is achieved using the newly prepared catalyst, single-atomic platinum on bimetallic metal-organic framework (MOF)-derived hollow porous carbon nanorods (PtSA/HPCNR). The PtSA-1.74/HPCNR-based SFC has a 3.4-time higher transient specific power density and 13.3-time longer discharge time with unique in situ self-charge and energy storage ability than 20% Pt/C-based FCs. X-ray absorption fine structure, aberration-corrected high-angle annular dark-field scanning transmission electron microscope, and density functional theory calculations demonstrate that the synergistic effect of Pt single-atoms anchored on carbon defects significantly boosts its electron transfer, ORR catalytic activity, durability, and rate performance, realizing rapid “ ORR+EDLC” parallel discharge mechanism to overcome the sluggish ORR process of traditional FCs. The promising SFC leads to a new pathway to boost the power density of FCs with extra-low Pt loading.
AB - Pursuing high power density with low platinum catalysts loading is a huge challenge for developing high-performance fuel cells (FCs). Herein, a new super fuel cell (SFC) is proposed with ultrahigh output power via specific electric double-layer capacitance (EDLC) + oxygen reduction reaction (ORR) parallel discharge, which is achieved using the newly prepared catalyst, single-atomic platinum on bimetallic metal-organic framework (MOF)-derived hollow porous carbon nanorods (PtSA/HPCNR). The PtSA-1.74/HPCNR-based SFC has a 3.4-time higher transient specific power density and 13.3-time longer discharge time with unique in situ self-charge and energy storage ability than 20% Pt/C-based FCs. X-ray absorption fine structure, aberration-corrected high-angle annular dark-field scanning transmission electron microscope, and density functional theory calculations demonstrate that the synergistic effect of Pt single-atoms anchored on carbon defects significantly boosts its electron transfer, ORR catalytic activity, durability, and rate performance, realizing rapid “ ORR+EDLC” parallel discharge mechanism to overcome the sluggish ORR process of traditional FCs. The promising SFC leads to a new pathway to boost the power density of FCs with extra-low Pt loading.
KW - hollow porous structure
KW - parallel discharge
KW - Pt single atoms catalyst
KW - self-charging
KW - ultra-high specific power
UR - http://www.scopus.com/inward/record.url?scp=85177215650&partnerID=8YFLogxK
U2 - 10.1002/adma.202308989
DO - 10.1002/adma.202308989
M3 - Article
AN - SCOPUS:85177215650
SN - 0935-9648
VL - 36
JO - Advanced Materials
JF - Advanced Materials
IS - 1
M1 - 2308989
ER -