公开(公告)号：US20250002358A1

公开(公告)日：2025-01-02

申请号：US18464274

申请日：2023-09-11

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Te-Chao Liao ,  Wei-Sheng Cheng ,  Chao-Tung Wu ,  Hsin-Hui Chiu

IPC: C01B33/021 ,  H01M4/04 ,  H01M4/62

Abstract: Manufacturing methods of silicon nanoparticles for batteries and silicon-doped electrode material, wherein the manufacturing method of silicon nanoparticles for batteries includes the following steps. A dispersant is mixed with a solvent to form a dispersion liquid. Then, the dispersion liquid, a grinding medium and a silicon raw material are added into a grinder. A grinding process is performed to form silicon nanoparticles with an average particle size of less than 200 nm. Next, a silicon dispersion liquid containing the silicon nanoparticles is taken out. Afterward, alkali solution is added into the silicon dispersion liquid to form silicon nanoparticles for batteries, wherein surface layers of the silicon nanoparticles for batteries each is a silicon oxide layer.

公开(公告)号：US20250101625A1

公开(公告)日：2025-03-27

申请号：US18528983

申请日：2023-12-05

Applicant: NAN YA PLASTICS CORPORATION

Inventor： TE-CHAO LIAO ,  WEI-SHENG CHENG ,  Yu-Chi Hsieh ,  Hsin-Hui Chiu

IPC: C25D3/10 ,  C25D3/08 ,  C25D7/06 ,  H01M4/02 ,  H01M4/62 ,  H01M4/66

Abstract: A surface treatment method of a copper foil, an antioxidant copper foil, and a cathode of a lithium battery are provided. The antioxidant copper foil includes a copper foil substrate and an antioxidant layer formed thereon. The antioxidant layer contains chromium elements derived from a chromic acid compound, and contains nitrogen elements at least partially derived from an aminotetrazole compound and a nitrogen-containing heterocyclic compound. The antioxidant copper foil satisfies the following characteristics: (a) the antioxidant layer has a chromium content of between 5 and 35 μg/m2 determined by XRF; (b) the antioxidant layer has a nitrogen content of between 0.1 and 10 wt % determined by XPS; (c) the antioxidant copper foil has a C—N signal detected by headspace GC-MS; and (d) after baking the antioxidant copper foil at 250° C. for 10 minutes, a surface color difference ΔE of the antioxidant layer is not greater than 8.