摘要:
Disclosed is a battery comprising one or more bipolar plates, further comprising a substrate with at least one foil that has one or more features that alleviate stress generated in the foil by a charge/discharge cycle. Specifically, the bipolar plate may include a substrate with a foil on at least one side of the substrate that includes at least one stress-relieving feature at each of a plurality of solder joints at which the foil is attached to the substrate.
摘要:
An electrode includes a soft substrate, a metal layer in direct contact with the soft substrate, and a lithium layer formed directly on the metal layer, wherein the metal layer comprises wrinkles. The wrinkles are of a substantially uniform height, and the height is in a range of 100 nm to 20 μm. The wrinkles are typically separated by a substantially uniform distance, and the distance is in a range of 100 nm to 1000 μm. The wrinkles may be one dimensional or two dimensional. Fabricating an electrode includes forming a metal layer on a soft substrate, and forming a lithium layer on the metal layer. Forming the lithium layer on the metal layer yields uniform wrinkles in the metal layer. A battery may include the electrode as described.
摘要:
본 발명은 이차전지용 음극에 관한 것으로, 본 발명에 따른 이차전지용 음극은, 음극 집전체 및 상기 음극 집전체 표면의 적어도 일부에 집적된 음극 활물질을 포함하며, 상기 음극 집전체에는 상기 음극 활물질이 집적되는 다수의 탈리방지 집전홈이 형성되고, 충방전 과정에서 상기 탈리방지 집전홈에 질량 확산층이 형성되는 공간부가 형성되도록, 상기 탈리방지 집전홈의 내측면에 상기 음극 활물질이 형성된다.
摘要:
An electrode assembly and a lithium ion battery are provided. An electrode assembly includes (1) an anode plate that includes an anode active material which in turn includes a first lithium metal oxide and a second lithium metal oxide, and (2) a cathode plate that includes a cathode active material which in turn includes a graphite-based composite. The number of dissociated lithium ions included in the second lithium metal oxide is larger than the number of dissociated lithium ions included in the first lithium metal oxide. An electronic device including the lithium ion battery is also provided.
摘要:
The present invention provides anodes comprising an electrically conductive substrate, comprising at least one non-uniform surface; and a random network of silicon nanowires (Si NWs) chemically grown on said at least one non-uniform surface of the substrate, wherein the Si NWs have at least about 30% amorphous morphology, and methods of manufacturing of the anodes. Further provided are lithium ion batteries comprising said anodes.
摘要:
A thin film battery may include a substrate; with a cathode current collector layer an anode current collector layer, a cathode layer, an electrolyte layer, and an anode layer, wherein a portion of an anode contact area of the anode current collector is not covered by the anode layer, and wherein an electrically insulating buffer area in the electrolyte layer, for electrically isolating the laser cut edge of the cathode layer adjacent to the contact area of the cathode current collector from the laser cut edge of the anode layer, is not covered by the anode layer, the electrically insulating buffer area being between the contact area of the cathode current collector layer and the anode layer, Methods and apparatus for forming thin film batteries are also described herein.
摘要:
The present disclosure relates to a novel surface-modified carbonaceous particulate material having a hydrophilic non-graphitic carbon coating. The material can for example be produced by CVD-coating of a carbonaceous particulate material such as graphite followed by an oxidation treatment under defined conditions. The resulting material exhibits a more hydrophilic surface compared to an unmodified CVD-coated carbon material, which is desirable in many applications, such as when used as an active material in the negative electrode of lithium ion batteries or in a polymer composite material.