Powder coating technology -...
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Powder coating technology Powder coating technology Surface activity control of rechargeable battery Cathode ・Deterioration restraint of the electrolyte ・Elution restraint of each atoms from active material Appearance of Cathode active materials Coatable cathode active martial example Composition Particle Size 1 ～ 20μm（Spherical or Para-spherical） Surface coated cathode active materials Active materials SEM Active materials atomic composition EDS Mapping Coat materials atomic composition EDS Mapping <Particle cross section> Active material Coat material < Results > ・Deterioration restraint of the electrolyte ・Elution restraint of each atoms from activematerial ＜Cycle test （High-Load test）＞ 55℃,cut off 4.4V coated uncoated ・DOWA unique technologies makes dense and homogeneous coat layer on active material. ・High reliability and low capacity retention during cycle test 120％ 100％ 80％ 60％ 40％ 20％ 0％ 0 10 20 30 40 50 60 70 80 90 100 Disharge Capacity(%) Cycle Number NMC (Li(NiaMnbCo1-a-b)O2) /NCA(Li(NiaCobAl1-a-b)O2 ) Para spherical type Spherical type
Transcript of Powder coating technology -...
Powder coating technologyPowder coating technology
Surface activity control of rechargeable battery Cathode ・Deterioration restraint of the electrolyte・Elution restraint of each atoms from active material
Appearance of Cathode active materials
Coatable cathode active martial exampleCompositionParticle Size 1 ～ 20μm（Spherical or Para-spherical）
Surface coated cathode active materialsActive materials
SEM
Active materialsatomic composition
EDS Mapping
Coat materials atomic composition
EDS Mapping
<Particle cross section>
Active material
Coat material
< Results >・Deterioration restraint of the electrolyte・Elution restraint of each atoms from activematerial
＜Cycle test （High-Load test）＞ 55℃,cut off 4.4V
coated
uncoated
・DOWA unique technologies makes dense and homogeneous coat layer on active material.・High reliability and low capacity retention during cycle test
120％
100％
80％
60％
40％
20％
0％0 10 20 30 40 50 60 70 80 90 100
Disharge Capacity(%)
Cycle Number
NMC (Li(NiaMnbCo1-a-b)O2) /NCA(Li(NiaCobAl1-a-b)O2 )
Para spherical typeSpherical type
