Whole buildings could become giant batteries with help of 'cenosphere' tech breakthrough

https://www.rechargenews.com/energy-transition/whole-buildings-could-become-giant-batteries-with-help-of-cenosphere-tech-breakthrough/2-1-1595981

"microcapsule polymer shell phase-change materials used for thermal energy storage strengthened using bioinspired method for applying silica coating on surface... coating made of cenospheres: lightweight, hollow, and spherical ceramic microspheres that are byproduct of coal-burning power plants... improved microcapsule thermal performance and fire resistance... incorporated into building materials such as concrete, heating, ventilation and air conditioning units without drastic loss of structural strength"