Tantalum

What it is

Tantalum is a hard, corrosion-resistant metal used in tiny capacitors inside almost every phone, laptop, and medical implant.

Why it matters

DR Congo and Rwanda are major sources; supply has historical conflict-mineral concerns. Demand is steady from electronics and medical.

Circular challenges

Whether tantalum re-enters the economy at end-of-life is mostly settled at the design stage. These are the recurring blockers.

• Capacitors are tiny

  A single capacitor holds milligrams of tantalum; recovery from e-waste only pays at industrial scale with specialised refining.

• Conflict-mineral due diligence

  Supply-chain traceability adds cost and complexity that smaller buyers struggle to absorb.

• Implants stay in bodies

  Medical implants are a one-way use; the material does not return to the cycle.