Co-spray printing of LiFePO4 and PEO-Li1.5Al0.5Ge1.5(PO4)3 hybrid electrodes for all-solid-state Li-ion battery applications

Bu, Junfu; Leung, Puiki; Huang, Chun; Lee, Sang Ho; Grant, Patrick S.

doi:10.1039/c9ta03824h

Cited by 29 publications

(14 citation statements)

References 63 publications

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“…As shown in previous studies, these pore structures can be useful in facilitating the dispersion of electrochemically active lithium-ions throughout the electrode, and can promote capacity at fast charging rates (≥ 20 C). [30][31][32][33][34] The thickness of the G layer interleaved between the LTO and current collector was ~ 1 µm, and the G layer on the top of LTO was ~ 2 µm. Overall, all the multi-layered hetero-electrodes were ~ 20 µm thick (see Table 1).…”

Section: Resultsmentioning

confidence: 99%

Scalable Multilayer Printing of Graphene Interfacial Layers for Ultrahigh Power Lithium‐Ion Storage

2020

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A low resistance graphene-based interfacial layer is developed for multi-layered lithium-ion capacitor electrodes using a layer-by-layer printing approach, with the goal of boosting energy storage performance at ultra-fast charge/discharge rates (≥ 100 C). The electrochemical behavior of spray printed Li 4 Ti 5 O 12 -based hetero-structure electrodes is investigated as a thin, discrete graphene layer is placed: (i) at the base of the Li 4 Ti 5 O 12 (at the electrode/current collector interface); (ii) on the top of the Li 4 Ti 5 O 12 (at the electrode/separator junction); and (iii) both at the base and on the top of the Li 4 Ti 5 O 12 (sandwich configuration), with marked improved electrode performance at > 50 C when the graphene layer is interleaved at the Li 4 Ti 5 O 12 /current collector interface. This best performing hetero-structure negative electrode is then coupled with a spray printed activated carbon positive electrode in a lithium-ion capacitor configuration, showing an attractive power density of ~ 8000 W/kg at 350 C. The fabrication of double-sided graphene/Li 4 Ti 5 O 12 multi-layered hetero-electrodes is successfully demonstrated over areas of 20 cm × 15 cm and in various patterned configurations.

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Section: Resultsmentioning

confidence: 99%

Scalable Multilayer Printing of Graphene Interfacial Layers for Ultrahigh Power Lithium‐Ion Storage

2020

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“…There have been many attempts to identify suitable materials since inorganic or polymer electrolytes were developed in the 1980s and 1990s [12–14] . Currently, inorganic solid electrolytes mainly include perovskite‐type (e. g., Li 0.5 La 0.5 TiO 3 [LLTO]), [15–17] NASICON‐type (e. g., Li 1.4 Al 0.4 Ti 1.6 (PO 4 ) 3 , [LATP]; Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 , [LAGP]), [18–24] and garnet‐type (e. g., Li 7 La 3 Zr 2 O 12 , [LLZO]) [25–29] in oxides and sulfides (e. g., Li 10 GeP 2 S 12 [LGPS]) [30–33] . Polymer electrolytes mainly include poly(ethylene oxide) (PEO), [34–39] poly(vinylidene fluoride) (PVDF), [40–43] poly(acrylonitrile) (PAN), [44–46] and poly(methyl methacrylate) (PMMA) [47,48] …”

Section: Introductionmentioning

confidence: 99%

Designing Ceramic/Polymer Composite as Highly Ionic Conductive Solid‐State Electrolytes

Qian

Chen

et al. 2020

Batteries & Supercaps

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The design and fabrication of solid‐state electrolytes (SSEs) with high ionic conductivity is the most crucial obstacle for all‐solid‐state lithium batteries (ASSLBs). However, though polymer SSEs have the advantages of effective interfacial contact, polymer ASSLBs have not been able to deliver performance comparable to conventional lithium‐ion batteries (LIBs) due to slow ion transport within the polymer framework. In contrast, the high inherent ionic conductivity of ceramic SSEs is limited by the poor electrolyte/electrode interfacial contact. Therefore, the concept of ceramic/polymer composite electrolytes (C/PCEs) was proposed to combine the advantages of these two electrolytes and simultaneously overcome their weaknesses. This work reviews the recent progress in C/PCEs development according to the morphology of the ceramic components in C/PCEs. In this review, we investigate the inherent relationship between the structures of C/PCEs and the performance of the resultant SSEs, and subsequently conclude some general C/PCE design principles for future SSEs.

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“…Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP), hybrid interlayer, solid-state electrolyte, Li metal battery, interface Solid-state electrolytes are receiving extensive attention in battery applications because of their better safety compared to the conventional organic liquid electrolytes [1,2]. Inorganic ceramics, such as NASICON-type [3][4][5][6][7], sulfide [8][9][10][11], perovskitetype [12,13], and garnet-type [14][15][16][17] materials, with high ionic conductivity and mechanical strength, are promising solidstate electrolytes for safe and high-energy-density Li batteries. However, these electrolytes face issues including high solid/ solid interfacial resistance and poor chemical stability in contact with electrode materials [18][19][20], which limit the development of solid-state batteries.…”

Section: Introductionmentioning

confidence: 99%

Inorganic/polymer hybrid layer stabilizing anode/electrolyte interfaces in solid-state Li metal batteries

Zhong

et al. 2020

Nano Res.

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Li 1.5 Al 0.5 Ge 1.5 (PO 4) 3 (LAGP) is a solid-state electrolyte with high ionic conductivity and air stability but poor chemical stability and high interfacial impedance when directly contacted with Li metal. In this work, we develop an inorganic/polymer hybrid interlayer composed of Li bis(trifluoromethylsulfonyl)imide/poly(vinylene carbonate) polymer electrolyte and SiO 2 submicrospheres to stabilize the Li/LAGP interface. The polymeric component renders high ionic conductance and low interfacial resistance, whereas the inorganic component imparts flame retardancy and a physical barrier to the known Li-LAGP side reaction, together enabling stable Li stripping/plating for more than 1,500 h at room temperature. With this interlayer at both electrodes, all-solid-state Li||LiFePO 4 full cells with stable cycling performance are also demonstrated.

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Co-spray printing of LiFePO₄ and PEO-Li_1.5Al_0.5Ge_1.5(PO₄)₃ hybrid electrodes for all-solid-state Li-ion battery applications

Abstract: Spray-printing of large area LFP electrodes with honeycomb pores filled and inter-layered with PEO-LAGP solid state electrolyte for high performance.

Cited by 29 publications

References 63 publications

Scalable Multilayer Printing of Graphene Interfacial Layers for Ultrahigh Power Lithium‐Ion Storage

Scalable Multilayer Printing of Graphene Interfacial Layers for Ultrahigh Power Lithium‐Ion Storage

Designing Ceramic/Polymer Composite as Highly Ionic Conductive Solid‐State Electrolytes

Inorganic/polymer hybrid layer stabilizing anode/electrolyte interfaces in solid-state Li metal batteries

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