摘要:
A method for forming an electrocatalyst for fuel cell applications comprises electrolessly depositing a first plurality of nickel particles onto carbon-support particles. The nickel particles are formed from a nickel ion-containing aqueous solution. At least a portion of the nickel particles are replaced with platinum via a galvanic displacement reaction to form a second plurality of nickel particles coated with a platinum layer. During this displacement reaction step, the nickel particles are heated to a temperature sufficient to form the platinum layer. Finally, the second plurality of nickel particles is optionally incorporated into a cathode layer of a fuel cell.
摘要:
Graphene and graphene-like materials may be formed by preparing a solution of a suitable polycyclic aromatic hydrocarbon (PAH) in a solvent that is immiscible with water (or other suitable underlying liquid). A suitably thin layer of the PAH solution is formed on the surface of a thin layer of water. The solvent is evaporated from the solution layer to form a film of PAH material organized in contiguous molecular discs. The organized PAH material may be further processed by careful removal or evaporation of the water layer to deposit the PAH residue on a desired surface. The PAH residue may then be heated to remove hydrogen atoms and form a carbon-enriched or wholly carbon, graphene structure.
摘要:
A fuel cell includes an anode, a cathode, and an ion conducting membrane interposed between the anode and cathode. The ion conducting membrane includes a base layer that has an ion conducting polymer and additive layer that has a metal supported on an oxide support, the oxide support scavenging hydroxyl radicals formed during fuel cell operation.
摘要:
The present invention discloses an acupuncture and moxibustion apparatus with multi-frequency microwave comprising a microwave oscillator A, a power amplifier A, circulator A, a power divider A, a microwave radiator A, a microwave oscillator B, a power amplifier B, a circulator B, a power divider B, a microwave radiator B, a controller, a display screen, and a power supply unit. Two medical frequencies in the international microwave band L are used to avoid the interferences between communication and TV. And the solid state modular microwave source is used, which provides a good thermal penetration, heating homogeneity, and safety performance, as well as high efficiency and long service life. Dual effect of acupuncture using metal needle and heating of acupuncture points by moxibustion is provided. The apparatus can be used to treat multiple human diseases.
摘要:
An anode material includes a plurality of negative solid-state electroactive particles. Each of the plurality of negative solid-state electroactive particles may include a lithium-doped silicon oxide and a solid electrolyte coating at least substantially continuously disposed over substantially all of the surface of the lithium-doped silicon oxide.
摘要:
A multi-frequency microwave acupuncture and moxibustion apparatus characterized in that its structure comprises a microwave oscillator A, a power amplifier A, circulator A, a power divider A, a microwave radiator A, a microwave oscillator B, a power amplifier B, a circulator B, a power divider B, a microwave radiator B, a controller, a display screen, and a power supply unit. Two types of operating frequencies are set: A at 433 MHz, B at 915 MHz, output waveform has continuous wave and four pulse modulation waves respectively at 1 MHz, 5 MHz, 10 MHz and 100 MHz, which are offered to treat different symptoms. Clinical verification shows that the multi-frequency microwave acupuncture and moxibustion apparatus has pretty good curative effects on knee osteoarthritis.
摘要:
A multi-frequency microwave acupuncture and moxibustion apparatus characterized in that its structure comprises a microwave oscillator A, a power amplifier A, circulator A, a power divider A, a microwave radiator A, a microwave oscillator B, a power amplifier B, a circulator B, a power divider B, a microwave radiator B, a controller, a display screen, and a power supply unit. Two types of operating frequencies are set: A at 433 MHz, B at 915 MHz, output waveform has continuous wave and four pulse modulation waves respectively at 1 MHz, 5 MHz, 10 MHz and 100 MHz, which are offered to treat different symptoms. Clinical verification shows that the multi-frequency microwave acupuncture and moxibustion apparatus has pretty good curative effects on knee osteoarthritis.
摘要:
An electrocatalyst is described. The electrocatalyst includes a core of a non-noble metal or non-noble metal alloy; and a continuous shell of a noble metal or noble metal alloy on the core, the continuous shell being at least two monolayers of the noble metal or noble metal alloy. Methods for making the electrocatalyst are also described.
摘要:
An electrocatalyst is described. The electrocatalyst includes a core of a non-noble metal or non-noble metal alloy; and a continuous shell of a noble metal or noble metal alloy on the core, the continuous shell being at least two monolayers of the noble metal or noble metal alloy. Methods for making the electrocatalyst are also described.
摘要:
A method for forming an electrocatalyst for fuel cell applications comprises electrolessly depositing a first plurality of nickel particles onto carbon-support particles. The nickel particles are formed from a nickel ion-containing aqueous solution. At least a portion of the nickel particles are replaced with platinum via a galvanic displacement reaction to form a second plurality of nickel particles coated with a platinum layer. During this displacement reaction step, the nickel particles are heated to a temperature sufficient to form the platinum layer. Finally, the second plurality of nickel particles is optionally incorporated into a cathode layer of a fuel cell.