Stabilizing gassy electrolytes could make ultra-low temperature batteries safer New separator improves battery safety and its performance in the extreme cold Chen group Artistic rendering of a battery separator that condenses gas electrolytes into liquid at a much lower pressure. The new separator improves battery safety and its performance in the extreme cold by keeping more electrolyte, as well as lithium ions, flowing in the battery. Zoom in ").addClass("image-details"); var $imageCaption = $("").addClass("image-caption").text(caption); $imageDetails.append($imageCaption); element = $(" ").append('×').append($imageHolder).append($imageDetails)[0]; img.draggable = false; if (title) { element.title = title; } if (altText) { element.alt = altText;