Apparently it was serendipitous. They were just hoping the carbon fibers would slow down the polysulphite formation, and were surprised when they found stable

Apparently it was serendipitous. They were just hoping the carbon fibers would slow down the polysulphite formation, and were surprised when they found stable gamma sulfur[1]. [1] https://www.freethink.com/environment/lithium-sulfur-battery https://www.freethink.com/environment/lithium-sulfur-battery