摘要:
In general, in one aspect, a graphene film is used as a protective layer for current collectors in electrochemical energy conversion and storage devices. The graphene film inhibits passivation or corrosion of the underlying metals of the current collectors without adding additional weight or volume to the devices. The graphene film is highly conductive so the coated current collectors maintain conductivity as high as that of underlying metals. The protective nature of the graphene film enables less corrosion resistant, less costly and/or lighter weight metals to be utilized as current collectors. The graphene film may be formed directly on Cu or Ni current collectors using chemical vapor deposition (CVD) or may be transferred to other types of current collectors after formation. The graphene film coated current collectors may be utilized in batteries, super capacitors, dye-sensitized solar cells, and fuel and electrolytic cells.
摘要:
Aspects of the invention are directed to a method for forming a graphene composite structure. Initially, an encapsulating film is formed on a substrate. The encapsulating film comprises graphene. Subsequently, a plurality of particles are deposited on the encapsulating film, and then a temporary layer is deposited on the plurality of active particles and the encapsulating film. The substrate is then removed. Lastly, the temporary layer is also removed so as to cause the plurality of particles to form a cluster that is at least partially encapsulated by the encapsulating film.
摘要:
An article of manufacture comprises an electrically conductive plate and one or more hybrid layers stacked on the electrically conductive plate. Each of the one or more hybrid layers comprises a respective sheet comprising graphene. Each of the one or more hybrid layers also comprises a respective plurality of particles disposed on the respective sheet. Finally, each of the one or more hybrid layers comprises a respective ion conducting film disposed on the respective plurality of particles and the respective sheet.
摘要:
Aspects of the invention are directed to a method of forming graphene structures. Initially, a cluster of particles is received. The cluster of particles comprises a plurality of particles with each particle in the plurality of particles contacting one or more other particles in the plurality of particles. Subsequently, one or more layers are deposited on the cluster of particles with the one or more layers comprising graphene. The plurality of particles are then etched away without substantially etching the deposited one or more layers. Lastly, the remaining one or more layers are dried. The resultant graphene structures are particularly resistant to the negative effects of aggregation and compaction.
摘要:
A silicon graphene-incorporated rechargeable Li-ion battery with enhanced energy delivery and cycling life comprising a high-performance Si/graphene composite anode, a cathode film and electrolyte is disclosed. The anode and cathode are immersed in or partially immersed in the electrolyte; wherein the anode is formed of a mixture of carbon coated Si and graphene composite with a polymer binder and a conductive additive. A method for fabricating such Si and graphene-based anode comprises the steps synthesis of carbon coated Si particles by polymer encapsulation and carbonization; enveloping the coated Si particles in graphene by mechanical agitation; formulating the carbon coated Si and graphene with a polymer binder and conductive additive; depositing the mixture onto current collectors. The anode structure affords a combination of superior rate capability, cycling life and improved volumetric capacity.
摘要:
Aspects of the invention are directed to a method of forming graphene structures. Initially, a cluster of particles is received. The cluster of particles comprises a plurality of particles with each particle in the plurality of particles contacting one or more other particles in the plurality of particles. Subsequently, one or more layers are deposited on the cluster of particles with the one or more layers comprising graphene. The plurality of particles are then etched away without substantially etching the deposited one or more layers. Lastly, the remaining one or more layers are dried. The resultant graphene structures are particularly resistant to the negative effects of aggregation and compaction.
摘要:
Aspects of the invention are directed to a method for forming a graphene composite structure. Initially, an encapsulating film is formed on a substrate. The encapsulating film comprises graphene. Subsequently, a plurality of particles are deposited on the encapsulating film, and then a temporary layer is deposited on the plurality of active particles and the encapsulating film. The substrate is then removed. Lastly, the temporary layer is also removed so as to cause the plurality of particles to form a cluster that is at least partially encapsulated by the encapsulating film.
摘要:
In one example, a device for coding video data includes a video coder configured to determine, for a depth block of a depth component of video data, a co-located texture block of a corresponding texture component, and when at least a portion of the texture block corresponds to a prediction unit of the texture component that is not intra-prediction coded: disable an inter-component Wedgelet depth modeling mode for the depth block, select an intra-prediction coding mode for the depth block other than the disabled inter-component Wedgelet depth modeling mode, and code the depth block using the selected intra-prediction coding mode.