Bias Zinc Cells

Bias Zinc Cells comprises two or four parallel zinc alloy sacrificial anode rods separated by insulating spacers, encapsulated within a cotton bag pre-filled with backfill material.

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Bias Zinc Cells	1042

Bias Zinc Cells comprises two or four parallel zinc alloy sacrificial anode rods separated by insulating spacers, encapsulated within a cotton bag pre-filled with backfill material. Key structural features:

Anode composition: Zn-Al-Cd alloy (ASTM B418)
Insulation system: Fiber-reinforced epoxy spacers (dielectric strength >30 kV/mm)
Backfill mixture: 75% gypsum + 20% bentonite + 5% sodium sulfate (optimizes ion diffusion)

SPECIFICATIONS

Chemical Composition(%)
Executive Standard	ASTM-418-type Ⅰ	ASTM-418-type Ⅱ
Al	0.1-0.5	≤0.005
Cd	0.025-0.07	≤0.003
Fe	≤0.005	≤0.0014
Pb	≤0.006	≤0.0014
Cu	≤0.005	≤0.002
Zn	Remainder	Remainder

Electrochemical Properties
Executive Standard	ASTM-418-type Ⅰ	ASTM-418-type Ⅱ
Open Potential(-V,vs SCE)	≥1.05	≥1.10
Closed Potential(-V,vs SCE)	≥1.0	≥1.05
Actual capacitance(A·h/kg)	≥780	≥740
Current Efficiency(%)	≥95	≥90