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Lithium ion battery anode materials(silicon-based)
To improve capacity and energy density of LIB, DAEJOO ELECTORNIC MATERIALS developed Si-based composite oxide materials showing the performances beyond the limit of traditional carbon anode materials. Compared to the limit of capacity of carbon anode 370mAh/g, it is able to realize around 4 times of carbon material capacity.
Application
Properties of silicon-based anode materials
DSO-C05 DMSO-C05
Silicon crystal size <10 nm Silicon crystal size <15 nm
Particle size[D50] 1~6 ㎛ Particle size[D50] 1~6 ㎛
BET surface area 5~25 m2/g BET surface area 5~25 m2/g
Oxygen content 34~36 wt% Oxygen content 25~35 wt%
Carbon content 2~7 wt% Carbon content 2~7 wt%
ELECTROCHEMICAL PERFORMANCES
Initial charge/discharge efficiency 74~76% Initial charge/discharge efficiency 80~85%
Charge capacity 2000~2100mAh/g Charge capacity 1600~1800mAh/g
Discharge capacity 1500~1600mAh/g Discharge capacity 1300~1500mAh/g

Electrochemical performances of DMSO anode materials

DMSO Single formulation

Formulation [Graphite + DMSO]

DMSO 5wt.%

DMSO 10wt.%

DMSO 15wt.%

DMSO 25wt.%

Initial charge cap. [mAh/g]

1715

435

500

570

700

Initial discharge cap. [mAh/g]

1410

400

450

500

610

Initial coulombic efficiency [%]

82

92

90

88

87

Cycle life (capacity retention, %)

90@50cycle

97@100cycle

95@50cycle

95@50cycle

90@50cycle