Incorporating highly dispersed alumina in PEO-based solid electrolytes by vapor phase infiltration for all-solid-state lithium metal batteries

Zhang, Yue; Bao, Wenda; Li, Haoyuan; Zhao, Lianqi; Yi, Beili; Zhao, Haojie; Zuo, Yuqing; Su, Linlin; Cai, Xincan; Liu, Lingyu; Xie, Jin

doi:10.1016/j.mtener.2022.101074

Cited by 5 publications

(6 citation statements)

References 39 publications

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“…It has been reported that the binding energy of Al will shift to a lower value when Al forms doping in ZnO. , Solid–state 27 Al nuclear magnetic resonance (NMR) spectroscopy was then performed to investigate the coordination states of Al (Figure b). The three peaks shown in PEO/Al 2 O 3 corresponded to AlO 6 , AlO 5 , and AlO 4 coordinated in VPI-Al 2 O 3 , which was consistent with our previous report . The AlO 4 peak increased dramatically at the expense of AlO 6 and AlO 5 in PEO/AZO, demonstrating that most of the Al in PEO/AZO was doped into ZnO.…”

Section: Resultssupporting

confidence: 92%

“…The three peaks shown in PEO/Al 2 O 3 corresponded to AlO 6 , AlO 5 , and AlO 4 coordinated in VPI-Al 2 O 3 , 44 which was consistent with our previous report. 36 The AlO 4 peak increased dramatically at the expense of AlO 6 and AlO 5 in PEO/AZO, demonstrating that most of the Al in PEO/AZO was doped into ZnO. Thus, the incorporating order of VPI-ZnO and VPI-Al 2 O 3 would have a great influence on the chemical environment of Al.…”

Section: Resultsmentioning

confidence: 95%

“…34 Compared to these liquid phase synthesis methods mentioned above, the gas-phase methods may further reduce the particle size and increase the distribution uniformity of fillers. Our group has successfully incorporated ZnO and Al 2 O 3 into the PEO matrix by vapor phase infiltration (VPI), 35,36 which originated from atomic layer deposition (ALD). The VPI methods have been proven to reduce the particle size of fillers and improve the uniformity of fillers dispersion.…”

Section: Introductionmentioning

confidence: 99%

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Incorporating Binary Metal Oxides in Poly(ethylene oxide)-Based Solid Electrolytes by Vapor Phase Infiltration

Bao

Zhang

Shang

et al. 2023

ACS Appl. Mater. Interfaces

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Vapor phase infiltration (VPI) derived from atomic layer deposition (ALD) enables inorganic materials to nucleate and grow within the free volume of polymers, which has shown promising prospects in the field of composite solid polymer electrolytes (CSPEs). However, there are only a few types of metal oxides that can be incorporated into the polymer matrix by VPI, let alone binary metal oxides, due to the limited knowledge of the VPI synthesis process. To combine the merits of different metal oxides, we investigate the VPI method to prepare ZnO-Al2O3 composites in poly(ethylene oxide) (PEO). When the introducing order is Al2O3/ZnO (AZO), due to the extremely high reactivity of trimethyl aluminum (TMA) with PEO, VPI-Al2O3 will accumulate near the surface of PEO. The surface Al2O3 layer inhibits the further diffusion of the diethyl zinc (DEZ) into the PEO matrix, leading to weak polymer–filler interactions and limited improvement of the Li+ conduction. In the incorporation order of ZnO/Al2O3 (ZAO), the moderate reactivity of DEZ renders the uniform distribution of VPI-ZnO within PEO, and the following TMA can both react with PEO and VPI-ZnO particles near the surface of PEO, which not only preserves the interactions between VPI-ZnO and PEO but also better inhibits the growth of lithium dendrites. The incorporation order plays a crucial role in the morphology and composition of binary metal oxides synthesized by VPI.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Incorporating Binary Metal Oxides in Poly(ethylene oxide)-Based Solid Electrolytes by Vapor Phase Infiltration

Bao

Zhang

Shang

et al. 2023

ACS Appl. Mater. Interfaces

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“…Numerous strategies have been explored to improve the ionic conductivity of PEO-based polymer electrolytes. The most frequently reported methods include some simpler techniques like the introduction of inorganic fillers, , addition of various additives, plasticizers, plastic crystals, porous frameworks, , and other complicated methods like copolymerization, , cross-linking, , etc. The incorporation of inorganic nanoparticles or porous metal–organic frameworks (MOFs) as fillers into the polymer matrix is successful in improving the ionic conductivity of the solid polymer electrolyte to a certain extent .…”

Section: Introductionmentioning

confidence: 99%

Solid Polymer Electrolyte Based on an Ionically Conducting Unique Organic Polymer Framework for All-Solid-State Lithium Batteries

Bandyopadhyay

Gupta

Joshi

et al. 2023

ACS Appl. Energy Mater.

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Solid polymer electrolytes (SPEs) are regarded as a potential candidate for the development of all-solid-state lithium batteries minus the safety issues related to their liquid counterparts. Poly(ethylene oxide) (PEO)-based SPEs with strong capability to dissolve lithium salts have found extensive application in lithium batteries. However, the crystalline nature and propensity of lithium dendrite growth in such SPEs have led to the search for preemptive alternatives like the incorporation of inorganic nanoparticles or porous frameworks as fillers in the polymer matrix. Herein, a unique organic polymer framework (OPF) was synthesized by the Suzuki–Miyaura coupling reaction between 2,5-dibromo-3-(2-(2-(2-ethoxyethoxy)ethoxy)ethyl)thiophene and triazine-phenyl boronic acid. Interestingly, the incorporation of long ethylene glycol side chains in the polymer framework resulted in the amorphous nature of the OPF. Impressively, the percentage of crystallinity of PEO reduced significantly to only 30% in OPF-incorporated PEO/lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) composites. Further, the side chains present in a multidirectional manner acted as an interfacial compatibilizer aiding the homogeneous distribution of OPF in the PEO matrix. The SPE showed significantly improved ionic conductivity compared to the pristine samples (9.61 × 10–3 S cm–1 at 55 °C) and a lithium-ion transference number of 0.53. The performance of such SPE was further evaluated by assembling Li/LiFePO4 (LFP) coin cells, showing a stable discharge capacity of 130 mAh g–1 at 0.2C after 200 cycles. This work provides an interesting concept for building a unique type of homogeneous OPF/PEO-based composite SPE film that can be utilized as a desirable material in solid electrolytes for lithium battery applications.

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“…Therefore, much attention has been paid to enhancing the characteristics of PEO‐based gel polymer electrolytes mainly through IC and mechanical stability. It is generally necessary to carry out conventional modification of PEO, which mainly includes blending, 4, 5 copolymerization, 6 crosslinking, 7, 8 etc. The modification of PEO has been developed for the purpose of disrupting the regularity of the PEO matrix by increasing the single and bifunctional polyethylene glycol acrylate monomer (m‐PEG) copolymerization or enhancing the mobility of the prepared polymer molecular chains through blending with plasticizers.…”

Section: Introductionmentioning

confidence: 99%

P(AMPS‐co‐PEGMA)‐doped and PVDF‐HFP‐enhanced stretchable polymer electrolytes: application as flexible electrochromic devices

Wang

Zheng

et al. 2023

Polymer International

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Polymer electrolytes are being considered as an effective solution for electrochemical devices to replace currently used organic liquid electrolytes due to their excellent mechanical properties and security. Herein, we prepared stretchable polymer electrolytes (SPEs) doped with poly[(2‐acrylamido‐2‐methylpropanesulfonic acid)‐co‐poly(ethylene glycol) dimethacrylate] (P(AMPS‐co‐PEGMA)) and enhanced with poly[(vinylidene fluoride)‐co‐hexafluoropropylene] (PVDF‐HFP), through UV in situ polymerization. The SPEs showed good mechanical performance with an elongation of more than 40% and ionic conductivity reaching the order of 10−3 S cm−1. In terms of application, flexible electrochromic devices based on the UV in situ‐prepared SPEs were assembled, the color switching performance being still good even after 400 switching cycles and 1000 bending cycles, which indicated that the SPEs could have excellent prospects in application for flexible devices. © 2023 Society of Industrial Chemistry.

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Incorporating highly dispersed alumina in PEO-based solid electrolytes by vapor phase infiltration for all-solid-state lithium metal batteries

Cited by 5 publications

References 39 publications

Incorporating Binary Metal Oxides in Poly(ethylene oxide)-Based Solid Electrolytes by Vapor Phase Infiltration

Incorporating Binary Metal Oxides in Poly(ethylene oxide)-Based Solid Electrolytes by Vapor Phase Infiltration

Solid Polymer Electrolyte Based on an Ionically Conducting Unique Organic Polymer Framework for All-Solid-State Lithium Batteries

P(AMPS‐co‐PEGMA)‐doped and PVDF‐HFP‐enhanced stretchable polymer electrolytes: application as flexible electrochromic devices

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