Molecular Engineered Safer Organic Battery through the Incorporation of Flame Retarding Organophosphonate Moiety.

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ACS applied materials & interfaces, ISSN: 1944-8252, Vol: 10, Issue: 12, Page: 10096-10101

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Lee, Hyun Ho; Nam, Dongsik; Kim, Choon-Ki; Kim, Koeun; Lee, Yongwon; Ahn, Young Jun; Lee, Jae Bin; Kwak, Ja Hun; Choe, Wonyoung; Choi, Nam-Soon; Hong, Sung You Show More Hide
American Chemical Society (ACS); AMER CHEMICAL SOC
Materials Science; electrodes; lithium-ion batteries; metal− organic frameworks; organophosphorus compound; safety
article description
Here, we report the first electrochemical assessment of organophosphonate-based compound as a safe electrode material for lithium-ion batteries, which highlights the reversible redox activity and inherent flame retarding property. Dinickel 1,4-benzenediphosphonate delivers a high reversible capacity of 585 mA h g with stable cycle performance. It expands the scope of organic batteries, which have been mainly dominated by the organic carbonyl family to date. The redox chemistry is elucidated by X-ray absorption spectroscopy and solid-state P NMR investigations. Differential scanning calorimetry profiles of the lithiated electrode material exhibit suppressed heat release, delayed onset temperature, and endothermic behavior in the elevated temperature zone.