The article, which is not paywalled and is a fast read, also doesn't mention cost. The energy and power density is closely correlated to physical size, so that

The article, which is not paywalled and is a fast read, also doesn't mention cost. The energy and power density is closely correlated to physical size, so that's covered. The article does mention durability, but only in the context of the lab's testbench: "The QUT team is pleased to note that these hybrid supercaps also last about twice as long as lithium batteries on the test bench, retaining 90 percent of their initial storage capacity after 10,000 full charge/discharge cycles." The article keeps mentioning "lithium batteries" which I presume refers to LiIon/LiPo/LiFePO rechargeable batteries and not disposable Lithium batteries, but it's not certain. Overall it's not a great article. Mostly a fluff PR piece for Queensland University's lab. I'd still plead with you to read before commenting, especially something snarky and dismissive.