Figure 5: In situ observation of heme molecule at different electrochemical states. | Nature Communications

Figure 5: In situ observation of heme molecule at different electrochemical states.

From: Heme biomolecule as redox mediator and oxygen shuttle for efficient charging of lithium-oxygen batteries

Figure 5

Spectroelectrochemical data of the different electrolytes (1 M LiClO4+TEGDME+Heme and 1 M LiPF6+TEGDME+Heme); CV curves of (a) 1 M LiClO4+TEGDME+Heme and (b) 1 M LiPF6+TEGDME+Heme and corresponding ultraviolet–vis spectrum of (c) 1 M LiClO4+TEGDME+Heme and (d) 1 M LiPF6+TEGDME+Heme. The spectroelectrochemical tests were performed with a commercial Au honeycomb working electrode and Au counter electrode in the voltage range of −1.5 to 1.5 V versus Pt pseudo-reference in an O2 atmosphere. Voltage values were converted to reflect a Li/Li+ reference; (e) Schematic illustration of chemical states of the heme molecule in Li-O2 cell.

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