POSTECH and POSCO Holdings Develop Sequential Calcination Process for Single-Crystal Cathodes

Published: Oct 19, 2026 11:43 (GMT+8)

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POSTECH announced on October 19 that its researchers, working with Kangwon National University, POSCO Holdings and IIT Bombay, developed a sequential calcination process that controls cathode particle growth by changing the oxygen concentration during heat treatment.

The team calcined NCM613 cathode material at 950°C for six hours, using air for the first four hours and oxygen for the remaining two hours. The resulting cathode retained 83.04% of its initial capacity after 100 charge–discharge cycles at 45°C, compared with approximately 77% for samples processed exclusively in air or oxygen. The findings were published in Advanced Science.

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