Spherical Graphite Powder

1. As bilong Prodak

Spherical Graphite Powder em ol i wokim long 'high-purity natural flake graphite olsem sabstret, na ol i prosesim long foapela bikpela wok bilong "krosim na klinim → 'airflow pulverization' na 'spheroidization' → 'high-temperature graphitization → plasma surface modification', na bihain ol i wokim i kamap 'micrometer' sais poda. Gutpela samting bilong en i stap long tupela strong bilong "ol samting bilong grafait + ol samting bilong 'spherical structural characteristics'": em i holim liklik strong, bikpela 'thermal conductivity', 'acid' na 'alkali resistance' pasin bilong 'graphite', na i helpim paura long ron gut (resting angle<=30 degrees) na 'tap' na 'spherin' solving ol hap we i isi long bungim na hat long wokim ol nomol 'graphite paura'. Em i wanpela bikpela samting tru long wok bilong ol nupela eneji litiam bateri, ol hai-end elektroniks, na ol gutpela samting bilong wokim ol samting, moa yet long ol 'negative electrode' bilong ol litiam-ion bateri, we inap long mekim bateri i kamap gutpela moa (inap long 300Wh/kg o moa) na i stap gut.

2. Ol samting bilong prodak

Ultra hai sferisiti: Ol liklik hap i gat standet sferik o kwasi sferik long seip, wantaim sferisiti bilong Bikpela o wankain olsem 92% (indastri standet Bikpela moa o wankain olsem 88%). Raunpela deviesen bilong ol liklik hap we ol i lukim long 'scanning electron microscopy' (SEM) em i liklik o wankain olsem 5%, we inap long daunim 'frictional resistance' namel long ol liklik hap, daunim bagarap bilong ol samting bilong wokim, na mekim wok bilong miksim ol samting i kamap wankain, wantaim mak bilong lus bilong ol samting i liklik o wankain olsem 1%.

Scenario based particle size distribution: Ol i ken senisim sais bilong ol liklik samting bihainim aplikesen senario. D50 we ol i save yusim planti taim long ol konsuma litiam bateri fil em 3-8μm, D50 we ol i save yusim planti taim long pawa litiam bateri fil em 8-12μm, na D50 we ol i save yusim planti taim long eneji stoa litiam bateri fil em 12-18μm. Olgeta spesifikasen i gat D10/D90 span bilong liklik o wankain olsem 10μm long abrusim 'electrode thickness deviation' bikos sais bilong ol liklik hap i no wankain.

Gutpela konduktiviti na 'thermal conductivity': Bihain long hai-temperature graphitaisesen tritmen (temperature Bikpela o wankain olsem 2800 digri), fiks kabon konten i Bikpela o wankain olsem 99.95% (nomal grafait Bikpela o wankain olsem 99.5%), volium resistiviti i liklik o wankain olsem 8μm na konduktiviti i bikpela o wankain olsem 160W/(m·K). Taim yumi skelim wantaim ol nomol 'spherical graphite', 'conductivity efficiency' bilong en i go antap long 15%-20%, we inap long daunim hat i save bungim taim ol i sasim na rausim bateri.

Kontrol bilong liklik pipia tru: Adoptim "hydrochloric acid - hydrofluoric acid mixed pickling + high-temperature impurity removal" proses, asis i stap insait long en i liklik o wankain olsem 0.08%, na ol bikpela samting nogut (Fe liklik o wankain olsem 30ppm, Silik liklik o wankain olsem 25 ppm o wankain olsem 15ppm) i stap aninit tru long standet bilong indastri (wanwan i liklik o wankain olsem 50ppm), na dispela i mekim na ol 'impurity ions' i no ken go insait long 'positive electrode' bilong bateri na dispela i save bagarapim 'capacity' bilong bateri.

Strongpela pasin bilong senisim envairomen: Gutpela stebiliti insait long pH 2-12 asid na alkalin envairomen (sapos i no gat 'concentrated nitric acid' na 'sulfuric acid'), 'temperature resistance range' i go antap long -250 digri i go inap 3200 digri aninit long 'inert atmosphere', 'moisture increment' Liklik o wankain olsem 0.1% bihain long 30 de insait long 'humid' envairomen (i no wankain olsem 85%), na i no gat 'moisture absorption' o 'aglomeration phenomenon'.

Gutpela 'moulding compatibility': Densiti bilong tap i bikpela moa o wankain olsem 1.3g/cm3 (nomal sferik grafait i bikpela moa o wankain olsem 1.1g/cm3), na em i gat gutpela kompatibiliti wantaim ol bikpela 'binder' olsem PVDF (polyvinylidene fluoride) na CMC (carboxymethyl cellulose). Densiti bilong 'electrode sheet' we ol i wokim i ken kamap long 1.6-1.8g/cm3, na dispela inap long inapim ol nid bilong 'high-capacity battery electrode molding'.

 

 

 

3. Yusim Prodak 

Ol samting bilong 'electrode' we i no gutpela long ol 'lithium-ion' bateri:

Ol pawa litiam bateri: Em i ken wok wantaim ol ternari litiam bateri (NCM) na litiam ain fosfet bateri (LFP), ol i save yusim long ol nupela eneji kar (olsem ol pawa bateri pek) na ol lektrik hevi-diuti trak. Bateri inap long holim strong bilong en we i winim o wankain olsem 80% bihain long 1500 saikel, na pawa inap long kamap 80% insait long 30 minit bilong sasim hariap.

Ol 'consumer lithium' bateri: Ol i save yusim long ol smatfon na laptop long mekim bateri i go antap (bikpela o wankain olsem 700Wh/L) na long mekim bateri i stap wanpela taim tasol.

Ol litiam bateri bilong putim pawa: Ol i save yusim long ol pawa stesin bilong putim pawa na ol sistem bilong putim pawa long ol beis stesen, wantaim wanpela 'discharge capacity retention rate' we i winim o wankain olsem 75% long ol ples we i no hat tumas inap long -20 digri.

Hai end konduktiv paste: Redim 'electronic paste' long rot bilong bungim wantaim silva paura na kopa paura, we ol i save yusim long 'conductive layer' bilong ol 'flexible circuit boards' (FPC) na 'conductive coating' bilong ol 5G bes stesin antena. Viskositi bilong 'paste' inap long stap gut long 5000-8000cP, na 'printing pass rate' i bikpela moa o wankain olsem 98%.

Precision lubricating material: Olsem wanpela strongpela 'lubricant' we ol i putim long 'aviation engine lubricating oil' na 'high-tempereture mold lubricating grease', 'friction coefficient' i liklik olsem 0.12, na em inap long holim yet 'lubrication performance' aninit long bikpela tempereja kondisen bilong 300 digri, na dispela i mekim sevis laip bilong ol komponen i go longpela moa inap 2-3 taim.

Ol samting we i wok wantaim:

Thermal conductive composite material: Ol i miksim wantaim aluminium aloi bilong LED hat sink, na dispela i mekim 'thermal conductivity' bilong aluminium aloi i go antap long 30%, na stretim hevi bilong bikpela tempereja atenuesen bilong ol LED bis.

Anti static materiel: Komposit wantaim PP (polypropylene) long wokim ol ilektronik komponen paket film, wantaim wanpela stebol pes resistens bilong 106-108Ω, we i inapim ol ESD proteksen rikwaemen.

Ol spesel fil aplikesen: Bihain long ol i senisim wantaim ol 'silane coupling agents', ol i ken yusim olsem wanpela 'coating' bilong ol 'fuel cell bipolar plates' bilong strongim 'corrosion resistance' bilong ol; Em i ken yusim tu olsem wanpela helpim konduktiv ejen bilong silva pes insait long ol fotovoltaik sel, na daunim mak bilong silva pes (long 10%-15%) na daunim pe bilong ol fotovoltaik modul.

4. Ol Teknikel Paramita

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