Park, Bum Chul Cho, Jiung Zhang, Jiliang Amedzo-Adore, Mawuse Lee, Dae Beom Kim, Sung-Chul Bae, Jong Seong Uhm, Young Rang Kim, Sang-Ok Koo, Jehyoung Kang, Yong-Mook Kim, Young Keun 2024-01-19T11:31:53Z 2024-01-19T11:31:53Z 2022-08-25 2022-08 2050-7488 https://pubs.kist.re.kr/handle/201004/114812 The considerable interest in rechargeable batteries is causing a rapid increase in demand and a surge in the price of raw materials. Earth-abundant iron oxyhydroxide (FeOOH) is a promising candidate as an anode material for sodium-ion rechargeable batteries (SIBs). However, the application of FeOOH is hindered by numerous technical limitations arising mainly from the irreversibility of the conversion reaction. Here, we manipulate biotic Fe redox from FeOOH-acetate hybrid nanoplatelets (FAHPs) to make the resulting conversion reaction with Na ions highly reversible. The extended lepidocrocite-type FAHP, in which FeOOH and acetate components are stacked in a layer-by-layer assembly, undergoes facile initial intercalation owing to its large interlayer spacing. Consequently, the redox reaction coupled with FeOOH reduction and acetate oxidation occurs in a similar way to the biotic Fe redox reaction. During the subsequent discharge-charge cycles, carbonate produced by the redox coupling of acetate and FeOOH serves as a stable and reversible host for Na ion storage. This study establishes a novel method for enabling highly reversible conversion reactions and enhancing the electrochemical capacity using not only Na ions but Li ions through the exploitation of the interplaying redox of inorganic and organic materials in hybrid structures. English Royal Society of Chemistry Bioinspired redox-coupled conversion reaction in FeOOH-acetate hybrid nanoplatelets for Na ion battery Article 10.1039/d2ta04990b 1 Journal of Materials Chemistry A, v.10, no.34, pp.17740 - 17751 Journal of Materials Chemistry A 10 34 17740 17751 N scie scopus 000840961200001 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article NEGATIVE ELECTRODE MATERIAL LITHIUM-ION BETA-FEOOH ELECTROCHEMICAL PROPERTIES ANODES INTERCALATION NANORODS LI