Eco friendly, inexpensive, hybrid supercapacitor stores high-power energy using the high carbon content of insignis pines sawdust

https://www.eurekalert.org/news-releases/1075335

"hybrid lithium ion device has advantages of both high-power supercapacitor withstanding many charge-discharge cycles/ battery storage... 1 electrodes was made of hard carbon and the other was made of activated carbon. What is more, great importance was attached in the research to the use of cost-efficient, sustainable processes for producing the electrodes... process to produce the electrodes was energy-efficient: synthesis temperatures did not exceed 700°C, and economic additives were used"