Materials electrochemistry for high energy density power batteries

Shen, Yanbin; Chen, Liwei

doi:10.1360/tb-2019-0517

Cited by 5 publications

(1 citation statement)

References 17 publications

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“…The increase in global warming and other environmental issues has encouraged more focus on the development of new electric vehicles. The main power source of electric vehicles is currently based on lithium-ion batteries (LIBs), making the development of high-energy-density LIBs important [ 1 , 2 ]. As secondary batteries, LIBs are advantageous in terms of their light weight, high energy density, good memory effect, and long cycle life [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries

et al. 2022

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Solid electrolyte interphase (SEI) formed at the interface in lithium-ion batteries plays an important role in isolating electrons and permeating ions during charging/discharging processes. Therefore, the formation of a good interface is crucial for better battery performance. In this study, additives based on adiponitrile (ADN) and trimethyl borate (TMB) were employed to broaden the electrochemical window and form a good SEI layer. Electrochemical Atomic force microscopy (EC-AFM) was used for in situ studies of film-formation mechanisms in high-voltage electrolytes on high-temperature pyrolytic graphite (HOPG), as well as Li- and Mn-rich (LMR) materials. X-ray photoelectron spectroscopy (XPS) combined with electrochemical methods revealed a synergistic reaction between the two additives to form a more stable interfacial film during charging/discharging processes to yield assembled batteries with improved cycle performance, its capacity increased from below 100 mAh/g to 200 mAh/g after 50 cycles. In sum, these findings would have great significance for the development of high voltage lithium-ion batteries with enhanced performance.

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