Acc Chem Res 2017 Nov 22. Epub 2017 Nov 22.
Electrochemistry Branch, Sensors and Electron Devices Directorate, US Army Research Laboratory , 2800 Powder Mill Rd., Adelphi, Maryland 20783, United States.
Electroactive interfaces distinguish electrochemistry from chemistry and enable electrochemical energy devices like batteries, fuel cells, and electric double layer capacitors. In batteries, electrolytes should be either thermodynamically stable at the electrode interfaces or kinetically stable by forming an electronically insulating but ionically conducting interphase. In addition to a traditional optimization of electrolytes by adding cosolvents and sacrificial additives to preferentially reduce or oxidize at the electrode surfaces, knowledge of the local electrolyte composition and structure within the double layer as a function of voltage constitutes the basis of manipulating an interphase and expanding the operating windows of electrochemical devices. Read More