Nickel-Cadmium (NiCd) vs. Solid-State Lithium (SSB)
Comparing 2 standards across 9 specifications. 9 key differences identified.
Nickel-Cadmium (NiCd) is a mature, exceptionally rugged alkaline secondary chemistry operating at 1.2V nominal. Renowned for sustaining massive pulse discharge currents, operating reliably in deep sub-zero temperatures (-40°C), and enduring harsh electrical abuse, NiCd remains in service for aircraft backup power, emergency lighting, and legacy industrial systems.
Solid-State Battery (SSB) chemistry replaces flammable liquid organic electrolytes with solid inorganic conductors (sulfide, oxide, or solid polymer). Paired with pure lithium metal anodes, solid-state cells achieve theoretical gravimetric energy densities of 400–500 Wh/kg, volumetric densities over 1,000 Wh/L, non-flammability, and ultra-fast charging capabilities.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Nominal Cell Voltage
|
1.20 V | 3.80 – 4.20 V |
|
Gravimetric Energy Density
|
45 – 65 Wh/kg | 380 – 500 Wh/kg |
|
Volumetric Energy Density
|
120 – 160 Wh/L | 900 – 1,150 Wh/L |
|
Cycle Life (to 80% Capacity)
|
1,000 – 2,000 Cycles | 1,000 – 2,500 Cycles |
|
Thermal Runaway Threshold
|
> 260 °C | > 300 °C |
|
Operating Temperature Range
|
-40 to +60 °C | -30 to +80 °C |
|
Self-Discharge Rate
|
15 – 20% / Month | < 1% / Month |
|
Primary Anode Material
|
Metallic Cadmium (Cd) | Metallic Lithium Foil / Anode-Free Copper |
|
Primary Cathode Material
|
Nickel Oxyhydroxide (NiOOH) | High-Nickel NMC / Lithium-Rich Manganese |