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Title: Noble metal-free bifunctional oxygen evolution and oxygen reduction acidic media electro-catalysts

We report that identification of low cost, highly active, durable completely noble metal-free electro-catalyst for oxygen reduction reaction (ORR) in proton exchange membrane (PEM) fuel cells, oxygen evolution reaction (OER) in PEM based water electrolysis and metal air batteries remains one of the major unfulfilled scientific and technological challenges of PEM based acid mediated electro-catalysts. In contrast, several non-noble metals based electro-catalysts have been identified for alkaline and neutral medium water electrolysis and fuel cells. Furthermore, we report for the very first time, F doped Cu 1.5Mn 1.5O 4, identified by exploiting theoretical first principles calculations for ORR and OER in PEM based systems. The identified novel noble metal-free electro-catalyst showed similar onset potential (1.43 V for OER and 1 V for ORR vs RHE) to that of IrO 2 and Pt/C, respectively. The system also displayed excellent electrochemical activity comparable to IrO 2 for OER and Pt/C for ORR, respectively, along with remarkable long term stability for 6000 cycles in acidic media validating theory, while also displaying superior methanol tolerance and yielding recommended power densities in full cell configurations.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of Pittsburgh, Pittsburgh, PA (United States)
Publication Date:
Grant/Contract Number:
SC0001531; 0933141; 1511390
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Univ. of Pittsburgh, Pittsburgh, PA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1312963

Patel, Prasad Prakash, Datta, Moni Kanchan, Velikokhatnyi, Oleg I., Kuruba, Ramalinga, Damodaran, Krishnan, Jampani, Prashanth, Gattu, Bharat, Shanthi, Pavithra Murugavel, Damle, Sameer S., and Kumta, Prashant N.. Noble metal-free bifunctional oxygen evolution and oxygen reduction acidic media electro-catalysts. United States: N. p., Web. doi:10.1038/srep28367.
Patel, Prasad Prakash, Datta, Moni Kanchan, Velikokhatnyi, Oleg I., Kuruba, Ramalinga, Damodaran, Krishnan, Jampani, Prashanth, Gattu, Bharat, Shanthi, Pavithra Murugavel, Damle, Sameer S., & Kumta, Prashant N.. Noble metal-free bifunctional oxygen evolution and oxygen reduction acidic media electro-catalysts. United States. doi:10.1038/srep28367.
Patel, Prasad Prakash, Datta, Moni Kanchan, Velikokhatnyi, Oleg I., Kuruba, Ramalinga, Damodaran, Krishnan, Jampani, Prashanth, Gattu, Bharat, Shanthi, Pavithra Murugavel, Damle, Sameer S., and Kumta, Prashant N.. 2016. "Noble metal-free bifunctional oxygen evolution and oxygen reduction acidic media electro-catalysts". United States. doi:10.1038/srep28367. https://www.osti.gov/servlets/purl/1312963.
@article{osti_1312963,
title = {Noble metal-free bifunctional oxygen evolution and oxygen reduction acidic media electro-catalysts},
author = {Patel, Prasad Prakash and Datta, Moni Kanchan and Velikokhatnyi, Oleg I. and Kuruba, Ramalinga and Damodaran, Krishnan and Jampani, Prashanth and Gattu, Bharat and Shanthi, Pavithra Murugavel and Damle, Sameer S. and Kumta, Prashant N.},
abstractNote = {We report that identification of low cost, highly active, durable completely noble metal-free electro-catalyst for oxygen reduction reaction (ORR) in proton exchange membrane (PEM) fuel cells, oxygen evolution reaction (OER) in PEM based water electrolysis and metal air batteries remains one of the major unfulfilled scientific and technological challenges of PEM based acid mediated electro-catalysts. In contrast, several non-noble metals based electro-catalysts have been identified for alkaline and neutral medium water electrolysis and fuel cells. Furthermore, we report for the very first time, F doped Cu1.5Mn1.5O4, identified by exploiting theoretical first principles calculations for ORR and OER in PEM based systems. The identified novel noble metal-free electro-catalyst showed similar onset potential (1.43 V for OER and 1 V for ORR vs RHE) to that of IrO2 and Pt/C, respectively. The system also displayed excellent electrochemical activity comparable to IrO2 for OER and Pt/C for ORR, respectively, along with remarkable long term stability for 6000 cycles in acidic media validating theory, while also displaying superior methanol tolerance and yielding recommended power densities in full cell configurations.},
doi = {10.1038/srep28367},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {2016},
month = {7}
}