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Effect of Molecular Structure of Quinones and Carbon Electrode Surfaces on the Interfacial Electron Transfer Process
(American Chemical Society (ACS), 2020-01-28)
Quinones can undergo thermodynamically reversible proton-coupled electron transfer reactions and are being applied as electroactive compounds in aqueous organic batteries. However, the electrochemical reversibility of these ...
Functioning Water‐insoluble Ferrocenes for Aqueous Organic Flow Battery via Host-Guest Inclusion
(Wiley, 2020-12-09)
Ferrocene (Fc) is one of the very limited organic catholyte options for aqueous organic flow batteries (AOFBs), a potential electrochemical energy storage solution to the intermittency of renewable electricity. Commercially ...
Carrier Dynamics and Absorption Properties of Gold-Hyperdoped Germanium: Insight Into Tailoring Defect Energetics
(American Physical Society (APS), 2021-06-23)
Hyperdoping germanium with gold is a potential method to produce room-temperature short-wavelength-infrared radiation (SWIR; 1.4–3.0 μm) photodetection. We investigate the charge carrier dynamics, light absorption, and ...
Highly Stable, Low Redox Potential Quinone for Aqueous Flow Batteries
(Wiley, 2022-02-24)
Aqueous organic redox flow batteries are promising candidates for large-scale energy storage. However, the design of stable and inexpensive electrolytes is challenging. Here, we report a highly stable, low redox potential, ...
Near Neutral pH Redox Flow Battery with Low Permeability and Long‐Lifetime Phosphonated Viologen Active Species
(Wiley, 2020-04-06)
A highly stable phosphonate‐functionalized viologen is introduced as the redox‐active material in a negative potential electrolyte for aqueous redox flow batteries (ARFBs) operating at nearly neutral pH. The solubility is ...
Extremely Stable Anthraquinone Negolytes Synthesized from Common Precursors
(Elsevier BV, 2020-06)
Synthetic cost and long-term stability remain two of the most challenging barriers for the utilization of redox-active organic molecules in redox flow batteries for grid scale energy storage. Starting from potentially ...
Method for Comparing Porous Carbon Electrode Performance in Redox Flow Batteries
(The Electrochemical Society, 2020-07-21)
We present a method for comparing porous electrodes for use in redox flow batteries. By comparing physical and electrochemical properties of six carbon cloth electrodes (CCEs) including hydraulic permeability, Ohmic ...
In situ Electrosynthesis of Anthraquinone Electrolytes in Aqueous Flow Batteries
(Royal Society of Chemistry (RSC), 2020-09-02)
We demonstrate the electrochemical oxidation of an anthracene derivative to a redox-active anthraquinone at room temperature in a flow cell without the use of hazardous oxidants or noble metal catalysts. The anthraquinone, ...
Chalcogen-hyperdoped germanium for short-wavelength infrared photodetection
(AIP Publishing, 2020-07-01)
Obtaining short-wavelength-infrared (SWIR; 1.4 μm–3.0 μm) room-temperature photodetection in a low-cost, group IV semiconductor is desirable for numerous applications. We demonstrate a non-equilibrium method for hyperdoping ...
The Poor Academic’s DC-Offset for Reversing Polarity in Electrochemical Cells: Application to Redox Flow Cells
(The Electrochemical Society, 2022-09-01)
We provide a simple and inexpensive manual DC-offset method for extending the accepted voltage range of a battery cycler to negative voltages, without interfering with the actual operation of the electrochemical cell under ...