国家/地区 中国（3）
IPC部 B（2） H（2）
IPC大类 B33（2） H01（2）
IPC小类 B33Y（2） H01G（2）
IPC B33Y010/00（2） H01G011/26（2） H01G011/32（2）
发明人 DU J（3）
公开年 2021（2）
申请年 2020（2） 
专利权人 UNIV NORTHWESTERN POLYTECHNICAL（3）

Preparing nitrogen-doped graphene by three-dimensional printing recyclable metal salts comprises designing double helix structure template by computer software, carrying out reduction reaction, removing metal template with dilute acid, and collecting metal salt powder for subsequent recycling.

GUAN C, LI C, DU J, FU G, XU Q

Supercapacitor comprises nickel cobaltate/graphene foam positive electrode, negative electrode and electrolyte comprising polyvinyl alcohol/potassium hydroxide gel, in which electrodes are double helix layered porous graphene foam electrode.

GUAN C, LIU Y, DU J, CAO Q, XU Q

Manganese dioxide and graphene superstructure electrode has graphene carrier that is provided with spiral specific-hedral gyroid structure, and has manganese dioxide layer that is grown on graphene carrier.

GUAN C, TANG X, CAO Q, DU J, XU Q