Xiao-Fei Yu

TL;DR: An operando mass spectrometry technique is presented, along with molecular dynamics simulations, that unveils the evolution of the solid–electrolyte interphase chemistry and structure in lithium-ion batteries during the first cycle.

TL;DR: It is reported that strong and reliable positive and negative molecular signals are achievable after optimizing the SIMS experimental conditions and molecular ion signal intensity has become very acceptable for use of in situ liquid SIMS to study solid–liquid and liquid–vacuum interfaces.

TL;DR: In this paper, a liquid SIMS approach was used to investigate the electrocatalytic oxidation of ethanol on gold surfaces in alkaline environments involved in direct alcohol fuel cells, and the formation of adsorbed hydroxide intermediates on the gold surfaces upon electro-oxidation was molecularly witnessed under operando conditions.

TL;DR: Findings indicate that with virtues of little bias on detecting positive and negative ions and the capability of directly analyzing concentrated electrolytes, in situ liquid SIMS is a powerful tool that can provide key evidence for improved understanding on the ion-solvent interactions in nonaqueous electrolytes.

TL;DR: In this paper, the structure, composition and optical band gap of WS2 films deposited by chemical vapor deposition (CVD) method on sapphire substrates before and after oxygen ion irradiation with different energy and fluences were studied.