2results about How to "Performance deviation is small" patented technology

The invention relates to a graphic chip testing and sorting machine, which comprises a loading part for carrying out a loading process of loading a graphic chip to be tested; the unloading part is used for carrying out an unloading process of unloading the tested graphic chip; the testing part is used for testing the graphic chip to be tested; the loading part is used for loading a graphic chip, the unloading part is used for unloading the graphic chip, the caching part is used for transferring the graphic chip between the loading part and the testing part and transferring the graphic chip between the unloading part and the testing part, and the testing part comprises a commercial graphic card which is the same as an actually used graphic card; and the contact unit is used for connecting the graphic chip to be tested to the commercial graphic card.

This invention discloses a two-step pulse electrodeposition method for preparing a nickel-tungsten-cobalt ternary metal oxygen evolution electrode and its application. Specifically, it addresses the Ni... 2+ Co 2+ With W 6+ The large differences in reduction potential and the mismatch in reduction kinetics lead to elemental segregation in single-step deposition. This invention addresses this problem by employing a two-step pulsed electrodeposition strategy: first depositing a Ni-W metal layer, then depositing a Ni-Co metal layer. This strategy optimizes the plating bath composition and pulse parameters step-by-step to accommodate the reduction requirements of different metal ions. The method includes: pretreatment of the nickel-based substrate; performing a first-step pulsed electrodeposition in a solution containing nickel and tungsten salts; and then performing a second-step pulsed electrodeposition in a solution containing nickel and cobalt salts, followed by drying. This invention, through specific two-step deposition and the periodic regulation of the pulsed current, effectively optimizes the loading and dispersion of nickel, tungsten, and cobalt, resulting in a high-performance oxygen evolution electrode with stable and reliable performance, meeting the application requirements of large-scale industrial production.