Interphases, Interfaces, and Surfaces of Active Materials in Rechargeable Batteries and Perovskite Solar Cells

Liu, Chaofeng; Yuan, Jifeng; Massé, Robert C.; Jia, Xiaoxiao; Bi, Wenchao; Neale, Zachary G.; Shen, Ting; Xu, Meng; Tian, Meng; Zheng, Jiqi; Tian, Jianjun; Cao, Guozhong

doi:10.1002/adma.201905245

Cited by 36 publications

(28 citation statements)

References 342 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Forming more of these heterogeneous grain boundaries through the use of readily oxidizing electrolyte additives such as LiNO3, particularly those which form highly defective, ionconducting reduction products on the Li metal surface, may be an effective route to improving Li ion transport at SEI/SEI interfaces. Taken together, our data suggest that modulating space-charge effects between grains in the SEI layer (e.g., through defect engineering92 ) may provide a promising route to achieving smooth Li deposition [97][98][99][100][101]. Finally, measurements at the electrolyte/SEI interface show that Li ion transport in this region is dominated by electrolyte salt concentration.…”

mentioning

confidence: 57%

Rapid Interfacial Exchange of Li Ions Dictates High Coulombic Efficiency in Li Metal Anodes

et al. 2021

View full text Add to dashboard Cite

Although Li metal batteries offer the highest possible specific energy density, practical application is plagued by Li filament growth with adverse effects on both Coulombic efficiency and battery safety. The structure and resulting properties of the solid electrolyte interphase (SEI) on Li metal is critical to controlling Li deposition morphologies and achieving high efficiency batteries. In this report, we use a combination of nuclear magnetic resonance (NMR) spectroscopy and X-ray photoelectron spectroscopy (XPS) to show that fast Li transport and low solubility at the electrode/SEI interface in 0.5 M LiNO 3 + 0.5 M LiTFSI electrolyte bi-salt in 1,3-dioxolane:dimethoxyethane (DOL:DME, 1:1, v/v) are responsible for the formation of low surface area Li deposits and high Coulombic efficiency, despite the fact that the SEI is thicker and chemically more heterogeneous than LiTFSI alone. These data suggest that SEI design strategies that increase SEI stability and Li interfacial exchange rate will lead to more even current distribution, ultimately providing a new framework to generate smooth Li morphologies during plating/stripping. File list (2) download file view on ChemRxiv SEItransportv29_acceptedchanges.pdf (840.92 KiB) download file view on ChemRxiv SEItransportSI_v16.pdf (2.12 MiB)

show abstract

mentioning

confidence: 57%

Rapid Interfacial Exchange of Li Ions Dictates High Coulombic Efficiency in Li Metal Anodes

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Typically, the surface of FTO turned coarse after treatment with TiCl 4 , NbCl 5 , SnCl 4 and ZrOCl 2 (Figure 1 e,f and S1). By contrast, no apparent change was observed when using WCl 6 , ZnCl 2 and MgCl 2 (Figure S1), probably due to the different hydrolysis rates of the MCl x and lattice matching degree between FTO and the different a‐MOHs [27–29] . We conducted a preliminary materials screening by simply evaluating the photovoltaic performances of ETL‐free devices based on different a‐MOH interlayers.…”

Section: Resultsmentioning

confidence: 99%

Suppressing Interfacial Charge Recombination in Electron‐Transport‐Layer‐Free Perovskite Solar Cells to Give an Efficiency Exceeding 21 %

Liao

Zhong

et al. 2020

Angew Chem Int Ed

View full text Add to dashboard Cite

The performances of electron‐transport‐layer (ETL)‐free perovskite solar cells (PSCs) are still inferior to ETL‐containing devices. This is mainly due to severe interfacial charge recombination occurring at the transparent conducting oxide (TCO)/perovskite interface, where the photo‐injected electrons in the TCO can travel back to recombine with holes in the perovskite layer. Herein, we demonstrate for the first time that a non‐annealed, insulating, amorphous metal oxyhydroxide, atomic‐scale thin interlayer (ca. 3 nm) between the TCO and perovskite facilitates electron tunneling and suppresses the interfacial charge recombination. This largely reduced the interfacial charge recombination loss and achieved a record efficiency of 21.1 % for n‐i‐p structured ETL‐free PSCs, outperforming their ETL‐containing metal oxide counterparts (18.7 %), as well as narrowing the efficiency gap with high‐efficiency PSCs employing highly crystalline TiO2 ETLs.

show abstract

“…Precise control of crystal growth and defect passivation are the most concise and powerful methods to reduce trap‐assisted recombination. [ 116–121 ]…”

Section: Strategies For Improving the Performance Of Peledsmentioning

confidence: 99%

Electroluminescence Principle and Performance Improvement of Metal Halide Perovskite Light‐Emitting Diodes

Liu

Guo

et al. 2021

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

Metal halide perovskites have attracted considerable interest for their potential applications in high‐definition displays owing to their narrowband emission, wide color gamut (≈140%), near‐unity photoluminescence efficiency, and cost‐effective solution processability. Extensive efforts have led to the external quantum efficiency of state‐of‐the‐art perovskite light‐emitting diodes (PeLEDs) to exceed 20%. However, there are several obstacles, such as poor working stability, low efficiency, and low luminance, of pure‐blue and pure‐red light‐emitting devices that delay their commercial application. Addressing these issues requires a deep understanding of the photoluminescence effect as well as the bottlenecks in the process. Here, the fundamental working principle, carrier recombination, and light outcoupling properties of PeLEDs are described. The performance improvement strategies of PeLEDs based on defect engineering, perovskite crystallization, charge injection balancing, and quantum confinement are discussed. Furthermore, the challenges of PeLEDs in pure‐color light emission, working stability, and toxicity are reviewed and discussed.

show abstract

Interphases, Interfaces, and Surfaces of Active Materials in Rechargeable Batteries and Perovskite Solar Cells

Cited by 36 publications

References 342 publications

Rapid Interfacial Exchange of Li Ions Dictates High Coulombic Efficiency in Li Metal Anodes

Rapid Interfacial Exchange of Li Ions Dictates High Coulombic Efficiency in Li Metal Anodes

Suppressing Interfacial Charge Recombination in Electron‐Transport‐Layer‐Free Perovskite Solar Cells to Give an Efficiency Exceeding 21 %

Electroluminescence Principle and Performance Improvement of Metal Halide Perovskite Light‐Emitting Diodes

Contact Info

Product

Resources

About