Poloka

(The development history of graphene materials) Ko hono mo'oni, graphene originally exists in nature, but it is difficult to peel off a single-layer structure. Graphene layers are stacked to form graphite, and 1…

(Ko e hā ʻa e kalafití?) Graphite material is mainly composed of polycrystalline graphite, which is an inorganic non-metallic material, but it is called semi-metal because of its good thermal and electrical conductivity. Graphite has…

(Ko e hā ʻa e ngaahi lelei ʻo e ngaahi pā lithium-ion .?) Compared with other high-energy secondary batteries such as Ni-Cd batteries, Ni-MH batteries, lead-acid batteries, ngaahi pā litiume-aione, lithium-ion batteries have significant performance advantages, which are mainly…

(Founga fo'ou 'o e ngaue 'a e graphene .) Graphene has outstanding physical, optical and mechanical properties and has been used in transparent touch screens, aerospace and biomedical fields. Ka neongo ia, graphene has relatively few uses in…

(What are the advantages and disadvantages of lithium batteries？) (1) Advantages of lithium battery The energy density is high, and its volume energy density and mass energy density can reach 450W.h/dm3 and…

(What are the advantages, disadvantages and disadvantages of graphene batteries) Graphene battery: Graphene battery is a honeycomb flat film formed by sp2 hybridization of carbon atoms. It is a quasi-two-dimensional material with…

(What are the classifications of graphite?) 1. Natural graphite The process characteristics of graphite are mainly determined by its crystalline form. Graphite minerals with different crystalline forms have different industrial values and…

(Ngaahi polokalama fakangaue'anga 'o e electrodes kalafaiti .) (1) For electric arc steelmaking furnace Electric furnace steelmaking is a big user of graphite electrodes. The output of electric furnace steel in my country accounts for…

(Kuo fai 'e he 'Inisititiuti 'o e ngaahi naunau fo'ou 'a e fakalakalaka 'i he ngaahi naunau 'o e spinel cathode 'oku makatu'unga 'i he manganese ki he ngaahi maa'imoa litiume .) The cathode material is generally considered to be the decisive factor in determining the performance of lithium-ion batteries.…

(Fa'ahinga 'e ono 'o e ngaahi naunau anode 'o e maka litiume .) ‘I he lolotonga ni ., negative electrode materials are mainly divided into two categories. One is carbon materials for commercial applications, such as natural graphite, soft carbon, etc.…

(Lithium-ion battery anode material main force: graphite material) As one of the four primary materials for lithium-ion batteries, the specific capacity and operating voltage directly determine the energy density and operating voltage…

(Litiume 'o e maka anode 'o e naunau tu'unga .) Lithium-ion batteries have many advantages such as high energy density, mo'ui siakale loloa, small self-discharge, no memory effect and environmental friendliness. They have been widely used in…