ハードカーボン
↑ Zheng, Honghe; Qu, Qunting (2012-05-15). “Hard carbon: a promising lithium-ion battery anode for high temperature applications with ionic electrolyte”. RSC Advances 2 (11): 4904–4912. ISSN 2046-2069. https://pubs.rsc.org/en/content/articlelanding/2012/ra/c2ra20536j.
↑ Kamiyama, Azusa; Kubota, Kei (2020-01-27). “High-Capacity Hard Carbon Synthesized from Macroporous Phenolic Resin for Sodium-Ion and Potassium-Ion Battery”. ACS Applied Energy Materials 3 (1): 135–140. doi:10.1021/acsaem.9b01972. https://doi.org/10.1021/acsaem.9b01972.
↑ Khosravi, Mohsen; Bashirpour, Neda (2013-11-01). “Synthesis of Hard Carbon as Anode Material for Lithium Ion Battery”. Advanced Materials Research 829: 922–926. doi:10.4028/www.scientific.