[KarlInOhio]

If they have short circuiting failures then inflammable is probably the right word.

[Dr. Sivana]

If they have short circuiting failures then inflammable is probably the right word.

Well, that would be at odds with this paragraph later in the same article:
Many of today's leading solid electrolytes are ceramic. They enable fast transport of lithium ions and physically separate the two electrodes that store energy. Most importantly, they are fireproof.