id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-13761		cet-13761		6	.pdf	application/pdf	4388	177	47	A huge capacity for energy storage; lower cost; safety due to the absence of contact of H2 with oxygen. However, the main idea of H2 energy is seasonal-based energy storage application, or using excess energy/electricity, which is impossible to save or permanently store now.	cache/cet-13761.pdf	txt/cet-13761.txt