ANISOTROPIC POROUS GERMANIUM NANOSTRUCTURES ACHIEVED WITH FAST BIPOLAR ELECTROCHEMICAL ETCHING AND CHEMICAL ETCHING

    公开(公告)号:US20230253571A1

    公开(公告)日:2023-08-10

    申请号:US17667998

    申请日:2022-02-09

    IPC分类号: H01M4/80 H01M4/66

    摘要: An anode for batteries having a columnar nanostructured porous germanium for its active material. This nanostructured porous germanium can be produced with the novel etching method disclosed herein. Such anode can be easily mass-produced with the presented method that requires pre-existing, affordable and easy to integrate equipment. In some embodiments, the produced columnar porous germanium can be directly used as a monolithic anode after its etching nanostructuration for on-chip anodes for example, where the anisotropic nanostructured germanium acts as the active material and where the remaining bulk germanium layer act as the current collector. This can be easily implemented in lithium batteries. The cycle life of such anodes could be extended by a factor of 26 and 1.8 for high rate and high energy applications, respectively.

    Generalized polar codes
    27.
    发明授权

    公开(公告)号:US11336300B2

    公开(公告)日:2022-05-17

    申请号:US16490293

    申请日:2018-03-05

    IPC分类号: H03M13/13 H03M13/23 H03M13/45

    摘要: A method for determining the n best positions of frozen bits in a channel decoder for a noisy communication channel. A decoding method and decoding processing unit for implementing the channel having frozen bits at the n worst positions. A method and system that iteratively, for each bit i from the n bits, determines a probability vector for the bit i by traversing a logical graph using contraction identities simplified to specific values, indexes the specific values from the contraction identities newly computed during the determination of the probability vector for subsequent reference during a following iteration based on corresponding contraction identities, fixes the bit i from the probability vector and moving to bit i+1 until all n bits are fixed.