How do you calculate precursor yield?

Divide recovered precursor mass by theoretical precursor mass and multiply by 100. With 8 kg recovered against 250 kg theoretical, the yield is 3.2%.

What is the precursor yield gap to target?

Subtract the actual yield from your target. With a 95% target and a 3.2% actual yield, the gap is 91.8 percentage points, signaling either a process problem or a unit/scale mismatch in the inputs.

What is a good precursor yield in CAM manufacturing?

Mature co-precipitation lines typically run high recovery, often above 90%, because metal inputs are costly. A result like 3.2% almost always indicates an input error or an incomplete batch rather than normal operation.

Why is my precursor yield so low?

A very low yield like 3.2% usually means recovered mass and theoretical mass are on different scales, the batch was sampled rather than fully harvested, or large losses went to mother liquor and fines. Check that both masses cover the same basis.

What is theoretical precursor mass?

It is the precursor mass your metal-salt feed should yield if every mole of nickel, cobalt, and manganese precipitated completely at target stoichiometry. It is the denominator that defines 100% recovery.

Does precursor yield include quality?

No. Yield is pure mass recovery. A batch can hit high yield yet fail on tap density, D50, or sulfate residual, so always pair yield with quality release data.

Cathode Active Material & Precursor Manufacturing calculator

Precursor Yield Calculator

In cathode active material (CAM) manufacturing, precursor yield measures how much usable hydroxide or carbonate precursor you actually recover versus the theoretical mass your metal feed should produce. It is a core efficiency and cost metric because nickel, cobalt, and manganese inputs are expensive, and every kilogram lost to mother liquor, fines, or off-spec material erodes margin. Co-precipitation process engineers and CAM plant managers use this calculator to track recovery against a target yield and to quantify the gap that improvement projects must close. It matters because at battery-grade scale, even a few points of precursor yield translate directly into large raw-material savings.

What this calculator does

Calculate precursor yield from recovered precursor mass versus theoretical or charged metal-equivalent mass for a co-precipitation batch or campaign.
Use it when precursor yield in cathode active material and precursor manufacturing needs a clean rate and gap-to-target you can put on a tier board.
It computes precursor yield as recovered mass divided by theoretical mass, and reports the gap in percentage points to your target.

Formula used

Precursor yield = recovered precursor mass ÷ theoretical precursor mass × 100
Precursor yield gap to target = target precursor yield - precursor yield

Inputs explained

Recovered precursor mass:
Theoretical precursor mass from feed:
Target precursor yield:

How to use the result

Use it after a co-precipitation batch or campaign to assess metal recovery efficiency against a benchmark.
It is a mass-recovery ratio only; it does not assess precursor quality attributes like tap density, particle size distribution, or metal stoichiometry, which can pass on yield yet fail spec.

Common questions

How do you calculate precursor yield? Divide recovered precursor mass by theoretical precursor mass and multiply by 100. With 8 kg recovered against 250 kg theoretical, the yield is 3.2%.
What is the precursor yield gap to target? Subtract the actual yield from your target. With a 95% target and a 3.2% actual yield, the gap is 91.8 percentage points, signaling either a process problem or a unit/scale mismatch in the inputs.
What is a good precursor yield in CAM manufacturing? Mature co-precipitation lines typically run high recovery, often above 90%, because metal inputs are costly. A result like 3.2% almost always indicates an input error or an incomplete batch rather than normal operation.
Why is my precursor yield so low? A very low yield like 3.2% usually means recovered mass and theoretical mass are on different scales, the batch was sampled rather than fully harvested, or large losses went to mother liquor and fines. Check that both masses cover the same basis.
What is theoretical precursor mass? It is the precursor mass your metal-salt feed should yield if every mole of nickel, cobalt, and manganese precipitated completely at target stoichiometry. It is the denominator that defines 100% recovery.

Last reviewed 2026-05-12.