botMB to Hacker News · 20 days agoResearchers make a supercapacitor from water, cement, and carbon blackwww.bbc.comexternal-linkmessage-square0fedilinkarrow-up112arrow-down10file-text
arrow-up112arrow-down1external-linkResearchers make a supercapacitor from water, cement, and carbon blackwww.bbc.combotMB to Hacker News · 20 days agomessage-square0fedilinkfile-text