The solid electrolyte interphase sei, a passivation layer formed on electrodes, is critical to battery performance and durability. Herein, we explored the nucleation, growth, and formation of sei film on highly oriented pyrolytic graphite hopg substrate in ionic liquidbased electrolytes 1butyl1methylpyrrolidinium bis. Although both li2co3 and lif have relatively low ionic conductivity, we. This study presents the first ever use of in situ nr to measure the structure of an sei in a lithium battery. Rapid charging of liion batteries is limited by lithium plating on graphite anodes, whereby. Lithiumion batteries, solidelectrolyte interphase request pdf. An understanding of the formation mechanism of solid electrolyte interphase sei film at the nanoscale is paramount because it is one of the key issues at interfaces in lithiumion batteries libs.
Sethuraman,a swapnil dalavi,b brett lucht,b michael j. In situ chemical imaging of solidelectrolyte interphase. Building artificial solid electrolyte interphase on spinel lithium. Lithiumlon batteries solidelectrolyte interphase editorsperla b.
Files available from the acs website may be downloaded for personal use only. A solid electrolyte interphase sei is generated on the anode of lithiumion batteries during the first few charging cycles. Here, we report the near fatiguefree, ultrafast, and highpower operations of lithiumion battery anodes employing silicide nanowires anchored. Synergetic effects of inorganic components in solid. Direct visualization of nucleation and growth processes of.
Quantification of inactive lithium and solid electrolyte interphase. In situ ecstem, liion batteries, solid electrolyte interface, li deposition. Batterygrade lithium hexafluorophosphate lipf6 in ethylene. Nanoscale imaging of fundamental li battery chemistry. On electrolytedependent formation of solid electrolyte. Gudurua, aschool of engineering, brown university, 182 hope street, providence, rhode island 02912. Compositions and formation mechanisms of solidelectrolyte. The surface reactions of electrolytes with the graphitic anode of lithium ion batteries have been investigated. The sei provides a passivation layer on the anode surface, which inhibits further electrolyte decomposition and affords the long calendar life required for many applications. Through characterizations using 1d and 2d solutionphase nuclear magnetic resonance spectroscopy, coupled with model chemical. Solid electrolyte interphase sei in liion batteries.
It is critical for the performance, durability, and safe operation of batteries. Rechargeable lithiumbased batteries 1,2,3 have enabled a revolution from tiny electronics to aerospace, gradually replacing the. Liion batteries are made possible by the solid electrolyte interphase, sei. Spinel lithium manganate limn2o4 is a promising cathode for aqueous lithium ion batteries alibs. Herein, a 23 nm artificial solid electrolyte interphase sei layer lithium. We report the formation mechanism and compositions of a solidelectrolyte interphase sei on a microporous carbonsulfur mcs cathode in lis batteries using a carbonatebased electrolyte 1 m lipf 6 in ethylene carbonate ecdimethyl carbonate, v. The performance increase of the lithiumion battery lib is critical for effectively leveling the cyclic nature of renewable energy sources related to the global warming. Controlling electric potential to inhibit solidelectrolyte interphase. The current lib performance with liquid electrolytes, e. Operando gas monitoring of solid electrolyte interphase reactions.