AUTHOR=Cao Dongcheng , Yu Cheng , Wu Suchen , Zhang Chengbin TITLE=Perspectives on Low-Temperature Packed Bed Latent Heat Storage Systems JOURNAL=Frontiers in Energy Research VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.935100 DOI=10.3389/fenrg.2022.935100 ISSN=2296-598X