GM, Cirba Solutions close 100% recycled-cathode battery pilot

General Motors and Cirba Solutions have completed a closed-loop EV battery recycling pilot in which 100% of the nickel, cobalt and manganese in the cathode active material of new cells came from end-of-life GM EV packs, the companies reported this month.

The trial, run with unnamed partners, took scrap from retired GM electric-vehicle battery packs and routed the recovered metals back into new battery cells, Battery Power Online reported.

What does "closed-loop" mean here?

A closed-loop battery cycle reroutes recovered cell materials into new cells of the same chemistry rather than downcycling them into lower-grade products. In this case, the cathode active material (CAM) — the powder coating on the cathode side of a lithium-ion cell — drew 100% of its nickel, cobalt and manganese from recovered end-of-life GM packs. That is a strict specification: the pilot targeted 100% recycled content on those three metals, not a blended feedstock with virgin material.

Why focus on nickel, cobalt and manganese first?

Nickel, cobalt and manganese are the three metals listed in a typical CAM formulation. They represent the highest-value and most supply-constrained cathode inputs in a lithium-ion cell. Closing the recycling loop on those three metals touches the largest economic and upstream-mining line items in a battery before cell assembly.

The pilot did not address the remaining inputs: lithium in the cathode, graphite in the anode, aluminum and copper in cell hardware, and electrolyte materials. The 100% recycled claim applies strictly to the three CAM metals.

Who handled each step?

• GM supplied the end-of-life packs and contributed cell-manufacturing expertise
• Cirba Solutions, a battery materials processor, handled the recovery operation that converts spent packs into battery-grade precursor materials
• Additional partners participated but were not named in the announcement

Typical cathode recycling steps

Recycling cathode material generally runs through four stages: dismantling and shredding the spent pack, black-mass separation, hydrometallurgical or pyrometallurgical recovery of metals, and synthesis of new precursor for cathode production. Closing the loop on a CAM means the recovered nickel, cobalt and manganese re-enter the synthesis stage and feed a new coating line.

The GM-Cirba pilot followed that sequence but did not disclose which stages Cirba performed in-house and which stages another partner handled.

What the announcement does not disclose

The pilot statement contains no figures for:

• Tonnes or pounds of packs processed
• Number of cells or full battery packs produced
• Energy density or cycle-life data versus virgin-material cells
• Which cell manufacturer produced the new cells and at which plant
• The names of the unnamed partners

Without those data points, the result signals technical feasibility of a 100% recycled CAM, not commercial readiness.

What to watch next

• Cell-manufacturing partner: any commercial-scale extension should name the cell fabricator and production site
• Lithium recovery: any future recycled-lithium milestone would extend the closed loop to a fourth metal
• Tonnage disclosure: a commercial announcement should include pack volume processed and cells produced
• Cost and performance data: any benchmarking of recycled-CAM cells against virgin-material cells on cost, energy density and cycle life