Chinese Academy of Sciences

China Energy Cas Technology Co., Ltd.

Liwei Chen

Wei Lu

Yalong Wang

Yanbin Shen

Feng Guo

Peng Chen

Dan Meng

Tuo Kang

Xiaodong Wu

Jinfeng Li

Chenghao Liu

Zhaolong Du

Cairui She

Chenji Hu

Gang Shi

This application relates to a solid-state electrolyte and a preparation method and application thereof, the solid-state electrolyte includes membrane material(s) and electrolyte salt(s), the organic phase of the membrane material(s) includes a three-dimensionally interconnected interface and has a specific interfacial area greater than or equal to 1×10cm/cm, and the electrolyte salt(s) is dissolved in the organic phase. The preparation method of the solid-state electrolyte includes: spraying the polymeric material solution onto the selected receiving surface using electrostatic spinning technique to form a three-dimensional structure, and optionally, at the same time, spraying the dispersion liquid of the inorganic particles onto the selected receiving surface using electrostatic spraying technique, then treating under pressure to give the membrane material(s), and then dropwise adding or spraying the electrolyte salt(s) solution into the membrane material(s) or immersing the thin film in the electrolyte salt(s) solution.

Solid electrolyte, and preparation method therefor and application thereof

Carbon nanoparticle-porous skeleton composite material, its composite with lithium metal, and their preparation methods and use A carbon nanoparticle-porous skeleton composite material, its composite with lithium metal, and their preparation methods and use. In the carbon nanoparticle-porous skeleton composite material, the porous skeleton is a carbon-based porous microsphere material with a diameter of 1 to 100 μm or a porous metal material having internal pores with a micrometer-scale pore size distribution, and the carbon nanoparticles are distributed in pores and on the surface of the carbon-based porous microsphere material or the porous metal material. The carbon nanoparticle-porous skeleton composite material is mixed with a molten lithium metal to form a lithium-carbon nanoparticle-porous skeleton composite material. The carbon nanoparticles present in the material can better conduct lithium ions during the battery cycle, thereby inhibiting the formation of lithium dendrites, and improving the safety and cycle stability of the battery.

Carbon nanoparticle-porous skeleton composite material, its composite with lithium metal, and their preparation methods and use

Disclosed are a metallic lithium-skeleton carbon composite material having a hydrophobic cladding layer, a preparation method thereof, an electrode, an electrochemical energy storage device containing the metallic lithium-skeleton carbon composite material, and a method for protecting a material containing a water- and oxygen-sensitive active metal. The metallic lithium-skeleton carbon composite material having a hydrophobic cladding layer comprises: a metallic lithium-skeleton carbon composite material comprising a porous carbonaceous support and metallic lithium at least distributed in pores of the porous carbonaceous support; and a hydrophobic cladding layer covering at least the metallic lithium in the metallic lithium-skeleton carbon composite material.

Metallic lithium-skeleton carbon composite material having a hydrophobic cladding layer, preparation method and use thereof

Disclosed is a porous carbon nanotube microsphere material and the preparation method and use thereof, a lithium metal-skeleton carbon composite and the preparation method thereof, a negative electrode of a secondary battery, a secondary battery, and a metal-skeleton carbon composite. The porous carbon nanotube microsphere material is spherical or spheroidal particles composed of carbon nanotubes. The spherical or spheroidal particles have an average diameter of 1 &#x3bc;m to 100 &#x3bc;m. A large number of nanoscale pores are composed of interlaced nanotubes inside the particle, and the pore size is 1 nm to 200 nm. The preparation method thereof comprises: mixing and dispersing carbon nanotubes and a solvent, and performing spray drying, to obtain the carbon nanotube microspheres. The lithium metal-skeleton carbon composite is obtained by uniformly mixing lithium metal in a melted state with a porous carbon material carrier and cooling.

Porous carbon nanotube microsphere and preparation method and use thereof, lithium metal-skeleton carbon composite and preparation method thereof, negative electrode, and battery

Growing community of inventors

Jiangsu, China

Liwei Chen