Electronic structure influences on the formation of the solid electrolyte interphase

Song, Weixin; Scholtis, Elena Stein; Sherrell, Peter C.; Tsang, Deana Kwong Hong; Ngiam, Jonathan; Lischner, Johannes; Fearn, Sarah; Bemmer, Victoria; Mattevi, Cecilia; Klein, N.; Xie, Fang; Riley, David

doi:10.1039/d0ee01825b

Cited by 46 publications

(49 citation statements)

References 55 publications

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“…Very recently, Song et al. [ 55 ] reported that the electrode material itself can affect the formation of SEI based on using three different kinds of layered graphene with different specific surface area as LIB anodes (Figure 5d). Actually, in the early 1998, Winter and colleagues [ 56 ] have demonstrated that irreversible charge loss formed SEI increases with a higher Brunauer–Emmett–Teller specific surface area.…”

Section: The Fundamental Understanding Of Seimentioning

confidence: 99%

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A Growing Appreciation for the Role of LiF in the Solid Electrolyte Interphase

Tan

Meadows

Dong

et al. 2021

Advanced Energy Materials

590

364

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Rechargeable lithium batteries (RLBs) have revolutionized energy storage technology. However, short lifetime and safety issues have hampered their further commercialization, which is mainly attributable to the unstable solid‐electrolyte interphase (SEI) and uncontrolled lithium dendrite growth. In recent years, research on SEI has been pursued with determination worldwide. However, the structure and composition of the SEI have long been debated. Especially, the role of the main component, LiF, remains elusive. In this review, the structure and composition of SEIs are focused upon and the role of LiF in SEI is further analyzed. To this end, first, the development history of the SEI model is recounted. Second, the fundamental understanding of SEI is recalled. Third, the anode materials that can generate LiF in the SEI are categorized and discussed. Fourth, the characterization techniques of SEI layers are introduced. Fifth, the transport mechanism of Li+ ions within the SEI is discussed. Sixth, the physical properties of LiF are revisited. Seventh, the source of LiF is deeply analyzed. Finally, general conclusions and a perspective on the future research directions for SEI that may promote the large‐scale applications of lithium metal batteries is discussed.

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Section: The Fundamental Understanding Of Seimentioning

confidence: 99%

Section: The Fundamental Understanding Of Seimentioning

confidence: 99%

A Growing Appreciation for the Role of LiF in the Solid Electrolyte Interphase

Tan

Meadows

Dong

et al. 2021

Advanced Energy Materials

590

364

View full text Add to dashboard Cite

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“…[ 315 ] Recently, Song et al. [ 316 ] found that defects and dopants had scattering functions to disturb the electron migration route and alleviate the aggregation of electrons at material surfaces. Exploring the potential of heteroatom doping and defect design can improve the electrochemical performance of heterostructures further.…”

Section: Summary and Prospectsmentioning

confidence: 99%

Emerging of Heterostructure Materials in Energy Storage: A Review

et al. 2021

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With the ever‐increasing adaption of large‐scale energy storage systems and electric devices, the energy storage capability of batteries and supercapacitors has faced increased demand and challenges. The electrodes of these devices have experienced radical change with the introduction of nano‐scale materials. As new generation materials, heterostructure materials have attracted increasing attention due to their unique interfaces, robust architectures, and synergistic effects, and thus, the ability to enhance the energy/power outputs as well as the lifespan of batteries. In this review, the recent progress in heterostructure from energy storage fields is summarized. Specifically, the fundamental natures of heterostructures, including charge redistribution, built‐in electric field, and associated energy storage mechanisms, are summarized and discussed in detail. Furthermore, various synthesis routes for heterostructures in energy storage fields are roundly reviewed, and their advantages and drawbacks are analyzed. The superiorities and current achievements of heterostructure materials in lithium‐ion batteries (LIBs), sodium‐ion batteries (SIBs), lithium‐sulfur batteries (Li‐S batteries), supercapacitors, and other energy storage devices are discussed. Finally, the authors conclude with the current challenges and perspectives of the heterostructure materials for the fields of energy storage.

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“…[36] In contrast, N,S-C electrode possesses athicker and non-uniform SEI ( % 30-40 nm) (Figure S26b,F igure 5d)w ithout obvious stratification, and mainly exists as an amorphous phase, suggesting more electrolyte consumption. [37] According to XPS C1sand O1sspectrum of FeS 2 /N,S-C (Figure 5e,f,F igure S27a, 28a), contents of C À H/C À O (285.80 eV), [38] polyether (533.21 eV) [39] and C-O-Na (531.6 eV), [39] as organic decomposition products,a re much lower than those of N,S-C,s uggesting fewer organic components in its thin SEI. Besides,X PS elemental analysis after different Ar + sputtering times shows that CF x greatly decreases with increasing sputtering time and NaF dominates F1 ss pectra after sputtering 40 s, indicating ah omogeneous and ultra-thin SEI (Figure 5e,f,h, Figure S27a, 28a).…”

Section: Resultsmentioning

confidence: 99%

“…Such ultrathin and inorganic‐riched SEI could prevent coutinuous electrolyte decomposition and minimize the undesirable reaction, enabling high ICE, cyclic stability and rate performance [36] . In contrast, N,S‐C electrode possesses a thicker and non‐uniform SEI (≈30–40 nm) (Figure S26b, Figure 5 d) without obvious stratification, and mainly exists as an amorphous phase, suggesting more electrolyte consumption [37] …”

Section: Resultsmentioning

confidence: 99%

Ultra‐High Initial Coulombic Efficiency Induced by Interface Engineering Enables Rapid, Stable Sodium Storage

et al. 2021

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High initial coulombic efficiency is highly desired because it implies effective interface construction and few electrolyte consumption, indicating enhanced batteries life and power output. In this work, ah igh-capacity sodium storage material with FeS 2 nanoclusters ( % 1-2 nm) embedded in N, Sdoped carbon matrix (FeS 2 /N,S-C) was synthesized, the surface of which displays defects-repaired characteristic and detectable dot-matrix distributed Fe-N-C/Fe-S-C bonds.A fter the initial discharging process,t he uniform ultra-thin NaF-rich ( % 6.0 nm) solid electrolyte interphase was obtained, thereby achieving verifiable ultra-high initial coulombic efficiency ( % 92 %). The defects-repaired surface provides perfect platform, and the catalysis of dot-matrix distributed Fe-N-C/Fe-S-Cb onds to the rapid decomposing of NaSO 3 CF 3 and diethylene glycol dimethyl ether successfully accelerate the building of two-dimensional ultra-thin solid electrolyte interphase.D FT calculations further confirmed the catalysis mechanism. As ar esult, the constructed FeS 2 /N,S-C provides high reversible capacity (749.6 mAh g À1 at 0.1 Ag À1 )a nd outstanding cycle stability (92.7 %, 10 000 cycles,1 0.0 Ag À1 ). Especially,a tÀ15 8 8C, it also obtains ar eversible capacity of 211.7 mAh g À1 at 10.0 Ag À1 .A ssembled pouch-type cell performs potential application. The insight in this work provides abright way to interface design for performance improvement in batteries.

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Electronic structure influences on the formation of the solid electrolyte interphase

Abstract: The solid electrolyte interphase (SEI) is critical for lithium-ion battery (LIB). Understanding and control over how SEI is formed is therefore essential to develop LIBs with improved Coulombic efficiency, lifetime,...

Cited by 46 publications

References 55 publications

A Growing Appreciation for the Role of LiF in the Solid Electrolyte Interphase

A Growing Appreciation for the Role of LiF in the Solid Electrolyte Interphase

Emerging of Heterostructure Materials in Energy Storage: A Review

Ultra‐High Initial Coulombic Efficiency Induced by Interface Engineering Enables Rapid, Stable Sodium Storage

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