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US 2013/0260286 A1Published application
Oxygen reduction catalyst and electrochemical cell
AssigneeKabushiki Kaisha Toshiba
InventorsKatsuyuki Naito, Yoshihiko Nakano, Norihiro Yoshinaga, Shigeru Matake, Yoshihiro Akasaka
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Abstract
An oxygen reduction catalyst of an embodiment includes: a stack of single-layer graphenes; and a phosphorus compound, wherein some of carbon atoms of the graphenes are replaced by nitrogen atoms, and the phosphorus compound has a peak of phosphorus 2p orbital of 133.0 to 134.5 eV in X-ray photoelectron spectrum.
Claims16
An oxygen reduction catalyst comprising:
- a stack of single-layer graphenes;
- and
- a phosphorus compound, wherein
- some of carbon atoms of the grapheneare replaced by nitrogen atoms, and
- the phosphorus compound has a peak of phosphorus 2p orbital of 133.0 to 134.5 eV in X-ray photoelectron spectrum.
2 more elements
An oxygen reduction catalyst comprising:
- a stack of single-layer graphenes;
- and
- a phosphorus compound, wherein
- some of carbon atoms of the graphenes are replaced by nitrogen atoms, and
- a peak of phosphorus 2p orbital of the phosphorus compound is shifted by 1.0 to 2.5 eV toward a high-energy side from a peak of phosphorus 2p orbital of tetra-n-butylphosphonium bromide in X-ray photoelectron spectrum.
2 more elements
An electrochemical cell comprising:
- a positive electrode;
- a negative electrode;
- a proton conductive film held between the positive electrode and the negative electrode;
- and
- a power supply applying voltage to the positive electrode and the negative electrode, wherein
- the positive electrode or negative electrode includes an oxygen reduction catalyst including a stack of single-layer graphenes and a phosphorus compound, and
- some of carbon atoms of the graphenes in which are replaced by nitrogen atoms.
4 more elements
Dependencies are inferred from the claim text.