Journal: Nature Communications

Article Title: A twelve-electron conversion iodine cathode enabled by interhalogen chemistry in aqueous solution

doi: 10.1038/s41467-023-41071-6

Figure Lengend Snippet: The voltage profiles (the second cycle) of I 2 /HAC electrode in different electrolytes at 1 A g −1 when charged to ( a ) 1.0 V and ( b ) 1.15 V vs. SHE. c UV-vis spectra of the E-extracted solution during the charge-discharge process in H 2 SO 4 + KBr electrolyte. d Raman spectra of 0.1 M KIO 3 standard solution and the E-extracted solution been charged to 1.3 V in H 2 SO 4 + KBr electrolyte. e The color titration of the E-extracted solution been tested in the bromide supported electrolyte (C and D represents the charge and discharge process, respectively). f UV-vis spectra of the E-extracted solution after the color titration. g The discharge voltage profiles of I 2 /HAC electrode at different current densities. h The redox mechanism of the proposed I - /IO 3 - reaction in the presence of the bromide ions. The numbers are the representative reaction stages as listed. i EIS profiles of I 2 /HAC electrode in different charge-discharge stages in H 2 SO 4 electrolyte (the inset is the equivalent circuit model). The above electrolyte was 0.1 M H 2 SO 4 or 0.1 M H 2 SO 4 + 0.1 M KBr.

Article Snippet: Raman spectrum was carried out on a bench Raman dispersive microspectrometer (InVia Reflex, Renishaw) using a laser of 532 nm with a range from 100 to 1000 cm −1 .

Techniques: Titration

Journal: Nature Communications

Article Title: Development of long lifespan high-energy aqueous organic||iodine rechargeable batteries

doi: 10.1038/s41467-022-34303-8

Figure Lengend Snippet: a GCD curve collected from the 10th cycle of the PTCDI||I 2 glass cell tested at 40 A g −1 and 25 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\pm$$\end{document} ± 1 °C in a saturated KCl aqueous electrolyte with voltage points marked for characterization. b Ex situ UV–vis spectra measurements of the saturated KCl aqueous electrolyte recorded at various charge/discharge stages. c Ex situ Raman spectra measurements of the I 2 electrode recorded at different charge/discharge states. d – f Ex situ High-resolution K 2 p XPS spectra, O 1 s XPS spectra, and ATR–FTIR spectra of the PTCDI electrode in the pristine (uncycled), fully charged and fully discharged states, respectively.

Article Snippet: Ex situ Raman spectroscopy measurements were carried out on a bench Raman dispersive microspectrometer (Qontor, Renishaw/InVia, England) with a 532 nm laser at frequencies from 100 to 4000 cm −1 to record the crystallographic information.

Techniques: Ex Situ