A coal fuel cell demonstrated at Shenzhen University oxidizes powdered coal through an oxide membrane, producing electricity without flames, smoke stacks, or steam turbines. The "zero carbon emission" direct coal fuel cell (ZC-DCFC) traps the resulting CO₂ at the anode outlet for conversion into chemicals or baking soda, eliminating the release that normally defines coal’s climate impact.
The system pulverizes, dries, and surface-treats coal before feeding it into the anode chamber; oxygen enters the cathode side. The electrochemical reaction bypasses the 40 % Carnot ceiling that constrains conventional coal plants, offering higher theoretical efficiency according to project lead Xie Heping of the Chinese Academy of Sciences.
Earlier direct-carbon cells failed after short runs and delivered low power density. The latest stack boosts scalability, carbon conversion, and long-term stability, though the group has not published commercial-scale durability data.
Xie notes the cell could also operate a mile underground, converting unmined coal seams into electricity and transmitting only power to the surface, a concept that would spare the cost and risk of mining deep reserves. Source: Interestingengineering