Search: id:"swepub:oai:DiVA.org:uu-492115" >
Pyrophosphate Na2Co...
Pyrophosphate Na2CoP2O7 Polymorphs as Efficient Bifunctional Oxygen Electrocatalysts for Zinc-Air Batteries
-
- Gond, Ritambhara (author)
- Indian Inst Sci, Faraday Mat Lab FaMaL, Mat Res Ctr, Bangalore 560012, Karnataka, India.;Uppsala Univ, Dept Chem, Angstrom Lab, S-75120 Uppsala, Sweden.
-
- Singh, Shashwat (author)
- Indian Inst Sci, Faraday Mat Lab FaMaL, Mat Res Ctr, Bangalore 560012, Karnataka, India.;Normandie Univ, ENSICAEN, UNICAEN, CNRS,CRISMAT, F-14000 Caen, France.
-
- Zhao, Xiaofeng (author)
- Uppsala Univ, Condensed Matter Theory Grp, Mat Theory Div, S-75120 Uppsala, Sweden.;Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China.
-
show more...
-
- Singh, Deobrat (author)
- Uppsala universitet,Materialteori,Uppsala Univ, Condensed Matter Theory Grp, Mat Theory Div, S-75120 Uppsala, Sweden.
-
- Ahuja, Rajeev, 1965- (author)
- Uppsala universitet,Materialteori,Teoretisk fysik,Uppsala Univ, Condensed Matter Theory Grp, Mat Theory Div, S-75120 Uppsala, Sweden.;Indian Inst Technol Ropar, Dept Phys, Rupnagar 140001, Punjab, India.
-
- Fichtner, Maximilian (author)
- Helmholtz Inst Ulm HIU, Electrochem Energy Storage, D-89081 Ulm, Germany.;Karlsruhe Inst Technol KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany.
-
- Barpanda, Prabeer (author)
- Indian Inst Sci, Faraday Mat Lab FaMaL, Mat Res Ctr, Bangalore 560012, Karnataka, India.;Helmholtz Inst Ulm HIU, Electrochem Energy Storage, D-89081 Ulm, Germany.;Karlsruhe Inst Technol KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany.
-
show less...
-
Indian Inst Sci, Faraday Mat Lab FaMaL, Mat Res Ctr, Bangalore 560012, Karnataka, India;Uppsala Univ, Dept Chem, Angstrom Lab, S-75120 Uppsala, Sweden. Indian Inst Sci, Faraday Mat Lab FaMaL, Mat Res Ctr, Bangalore 560012, Karnataka, India.;Normandie Univ, ENSICAEN, UNICAEN, CNRS,CRISMAT, F-14000 Caen, France. (creator_code:org_t)
- 2022-09-06
- 2022
- English.
-
In: ACS Applied Materials and Interfaces. - : American Chemical Society (ACS). - 1944-8244 .- 1944-8252. ; 14:36, s. 40761-40770
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Developing earth-abundant low-cost bifunctional oxygen electrocatalysts is a key approach to realizing efficient energy storage and conversion. By exploring Co-based sodium battery materials, here we have unveiled nanostructured pyrophosphate Na2CoP2O7 polymorphs displaying efficient bifunctional electrocatalytic activity. While the orthorhombic polymorph (oNCPy) has superior oxygen evolution reaction (OER) activity, the triclinic polymorph (t-NCPy) delivers better oxygen reduction reaction (ORR) activity. Simply by tuning the annealing condition, these pyrophosphate polymorphs can be easily prepared at temperatures as low as 500 degrees C. The electrocatalytic activity is rooted in the Co redox center with the (100) active surface and stable structural framework as per ab initio calculations. It marks the first case of phospho-anionic systems with both polymorphs showing stable bifunctional activity with low combined overpotential (ca. similar to 0.7 V) comparable to that of reported state-of-the-art catalysts. These nanoscale cobalt pyrophosphates can be implemented in rechargeable zinc-air batteries.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- cobalt pyrophosphates
- bifunctional electrocatalysts
- ORR
- OER
- DFT calculations
- zinc-air battery
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database