PatentDOI
Metal-free bifunctional electrocatalyst for oxygen reduction and oxygen evolution reactions
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TLDR
A mesoporous carbon foam co-doped with nitrogen and phosphorus that has a large surface area and good electrocatalytic properties for both ORR and OER and is tested as an air electrode for primary and rechargeable Zn-air batteries.Abstract:
A co-doped carbon material, methods of making such materials, and electrochemical cells and devices comprising such materials are provided. The co-doped carbon material comprises a mesoporous carbon material doped with nitrogen and phoshporous (NPMC). The present NPMC exhibit catalytic activity for both oxygen reduction reaction and oxygen evolution reaction and may be useful as an electrode in an electrochemical cell and particularly as part of a battery. The present NPMC materials may be used as electrodes in primary zinc-air batteries and in rechargeable zinc-air batteries and many other energy systems.read more
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Journal ArticleDOI
Combining theory and experiment in electrocatalysis: Insights into materials design
Zhi Wei Seh,Zhi Wei Seh,Zhi Wei Seh,Jakob Kibsgaard,Jakob Kibsgaard,Jakob Kibsgaard,Colin F. Dickens,Colin F. Dickens,Ib Chorkendorff,Jens K. Nørskov,Jens K. Nørskov,Thomas F. Jaramillo,Thomas F. Jaramillo +12 more
TL;DR: A unified theoretical framework highlights the need for catalyst design strategies that selectively stabilize distinct reaction intermediates relative to each other, and opens up opportunities and approaches to develop higher-performance electrocatalysts for a wide range of reactions.
Journal ArticleDOI
Electrocatalysis for the oxygen evolution reaction: recent development and future perspectives
TL;DR: This review acquaints some materials for performing OER activity, in which the metal oxide materials build the basis of OER mechanism while non-oxide materials exhibit greatly promising performance toward overall water-splitting.
Journal ArticleDOI
Recent Advances in Ultrathin Two-Dimensional Nanomaterials
Chaoliang Tan,Xiehong Cao,Xiehong Cao,Xue-Jun Wu,Qiyuan He,Jian Yang,Xiao Zhang,Junze Chen,Wei Zhao,Shikui Han,Gwang-Hyeon Nam,Melinda Sindoro,Hua Zhang +12 more
TL;DR: The unique advances on ultrathin 2D nanomaterials are introduced, followed by the description of their composition and crystal structures, and the assortments of their synthetic methods are summarized.
Journal ArticleDOI
Promise and reality of post-lithium-ion batteries with high energy densities
Jang Wook Choi,Doron Aurbach +1 more
TL;DR: A review of post-lithium-ion batteries is presented in this paper with a focus on their operating principles, advantages and the challenges that they face, and the volumetric energy density of each battery is examined using a commercial pouch-cell configuration.
Journal ArticleDOI
Metal-free catalysts for oxygen reduction reaction.
TL;DR: This paper presents a probabilistic procedure for estimating the polymethine content of carbon dioxide using a straightforward two-step procedure, and shows good results in both the stationary and the liquid phase.
References
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Journal ArticleDOI
A First-Principles Study of the Role of Quaternary-N Doping on the Oxygen Reduction Reaction Activity and Selectivity of Graphene Edge Sites
Xiaoguang Bao,Xiaoguang Bao,Xiaowa Nie,Dieter von Deak,Elizabeth J. Biddinger,Wenjia Luo,Aravind Asthagiri,Umit S. Ozkan,Christopher M. Hadad +8 more
TL;DR: In this paper, density functional theory was used to investigate O2 chemisorption on the edge sites of graphene doped with quaternary nitrogen (N-graphene), and the potential-dependent free energy of reaction for the subsequent oxygen reduction reaction (ORR) steps was evaluated.
Journal ArticleDOI
Surface reactions of molecular and atomic oxygen with carbon phosphide films.
TL;DR: Results from this study suggest that carbon phosphide films can be used as AO-resistant surface coatings on polymers.
Patent
Microporous/Mesoporous Carbon
TL;DR: In this paper, hierarchical porous graphitic graphitic carbon is provided via improved methods based on a 3-D polymer network from a first precursor and a second precursor and carbonizing it, where the carbon in the resulting carbon structure comes from the first precursor while the second precursor volatizes to form the pores.
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Method for preparing porous carbon spheres doped with nitrogen and phosphorus and application
TL;DR: In this article, a method for preparing porous carbon spheres doped with nitrogen and phosphorus and an application is described, in which water serves as a solvent, polyphosphazenes microspheres and activating agents are mixed in a mass ratio of (0.2-2):1, concentration of the polyph phosphazenes is maintained at a level of 10-30wt%, stirring is performed completely, the mixture of the microsphere and the activating agents is obtained through centrifugal separation, and finally the mixture is subjected to carbonization.
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Doped carbon-sulfur species nanocomposite cathode for Li—S batteries
TL;DR: In this article, a heteroatom-doped carbon framework was proposed to act both as conductive network and polysulfide immobilizer for lithium-sulfur cathodes.