US 12,394,789 B2
Metal anode, method for preparing the metal anode, and secondary battery
Qiang Ma, Shenzhen (CN); Haobin Wu, Hangzhou (CN); Zhengjie Li, Shenzhen (CN); Yifei Xu, Hangzhou (CN); Xiang Hong, Shenzhen (CN); and Pinghua Wang, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Jan. 12, 2022, as Appl. No. 17/574,193.
Application 17/574,193 is a continuation of application No. PCT/CN2020/101482, filed on Jul. 10, 2020.
Claims priority of application No. 201910632088.1 (CN), filed on Jul. 12, 2019.
Prior Publication US 2022/0140326 A1, May 5, 2022
Int. Cl. H01M 4/40 (2006.01); H01M 4/04 (2006.01); H01M 4/62 (2006.01); H01M 10/0569 (2010.01)
CPC H01M 4/405 (2013.01) [H01M 4/0409 (2013.01); H01M 4/628 (2013.01); H01M 10/0569 (2013.01); H01M 2300/0042 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A metal anode comprising:
a metal anode body comprising two side surfaces; and
a protective layer formed on the two side surfaces and comprising:
a coordination polymer having an unsaturated metal site, wherein the coordination polymer uses zirconium, aluminum, or iron as a metal center and uses R—Xn as an organic ligand, wherein R is n-valent hydrocarbyl, substituted hydrocarbyl, or hydrocarboxy, wherein n is an integer in a range of 1 to 4, wherein X is an oxygen-containing functional group capable of forming a metal-oxygen chemical bond with the metal anode body, and wherein the metal-oxygen chemical bond is formed between metal atoms on a surface of the metal anode body and oxygen atoms in X; or
a complexation product formed by complexation between the coordination polymer and anions of battery electrolyte salt.