Thiol‐Branched Solid Polymer Electrolyte Featuring High Strength, Toughness, and Lithium Ionic Conductivity for Lithium‐Metal Batteries

Wang, Hangchao; Wang, Qian; Cao, Xin; He, Yan; Wu, Kai; Yang, Jiayi; Zhou, Henghui; Wen, Liping; Sun, Xiaoming

doi:10.1002/adma.202001259

Cited by 168 publications

(144 citation statements)

References 48 publications

(35 reference statements)

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“…It is also worthwhile noting that PIL-BA 50 TFSI has much higher strain capacity and ionic conductivity than most reported polymer electrolytes (Fig. 6f), [34][35][36][37][38][39][40][41][42][43][44][45][46][47] indicating promising application prospects in all-solid-state electrochemical devices to ensure high security during the long-term cycles.…”

Section: Resultsmentioning

confidence: 85%

High ionic conduction, toughness and self-healing poly(ionic liquid)-based electrolytes enabled by synergy between flexible units and counteranions

Yang

Liu

et al. 2021

RSC Adv.

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Section: Resultsmentioning

confidence: 85%

High ionic conduction, toughness and self-healing poly(ionic liquid)-based electrolytes enabled by synergy between flexible units and counteranions

Yang

Liu

et al. 2021

RSC Adv.

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“…[61,62] After introduction of porous carbon-ZrO 2 , the decrease of T 2 confirms the effect of nanoparticles on increasing the amorphous phase domain. [63] The three proton conductivity pathways for PA doped BHC2 membrane [61] facilitate proton transport. Besides, The PA doped BHC2 membrane with two phases benefits the proton transport because porous PAM hydrogels phase and ZrO 2 nanoparticles can absorb more PA. [59] The concentrated distribution of PA in the porous channel of PAM hydrogels and porous carbon-ZrO 2, which provide a high-speed channel for proton transport.…”

Section: Thermal and Chemical Stabilities As Well As The Mechanical Properties Of The Membranesmentioning

confidence: 99%

Construction of Stable Wide‐Temperature‐Range Proton Exchange Membranes by Incorporating a Carbonized Metal–Organic Frame into Polybenzimidazoles and Polyacrylamide Hydrogels

Yin

Liang

et al. 2021

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Fuel cells (FCs) are promising energy devices owing to their high efficiency and minimized pollutant emission. Among the various types of FCs, the proton exchange membrane fuel cell-based ones (PEMFC) are attractive in automobile, portable, and transportation power applications. [1][2][3][4] Presently, high-temperature PEMFCs (HT-PEMFCs) operating at >140 °C are greatly interesting because of their high carbon monoxide tolerance, high electrode kinetics, and simplified water/thermal management systems. [5][6][7] Phosphoric acid-doped polybenzimidazole (PA-PBI) is a promising candidate for high-temperature proton exchange membrane (HT-PEM) owing to its excellent chemical and thermal stabilities, as well as good protonconducting capability, at elevated temperatures and low humidity. [8][9][10] However, the rapid decrease in the proton-conducting capability of PA-PBI at a low temperature (<100 °C) owing to fast loss of phosphoric acid caused by water accumulated in the frequent cold start-ups (condensate water) and oxygen reduction reactions (water produced by the chemical reaction) at the FCs cathode during normal vehicle drive cycles, has limited their application in FC electric vehicles (FCEVs). [11] In the PA-PBI membrane, the interaction energy of PA-water is much stronger than interaction energy between PA-BI and two PAs. The water molecules from the environment penetrate into the PA cluster of PA-PBI until the base polymers cannot hold the water and PA and bring "loosely bound" PA molecules out of the membrane (PA leaching). [12] To address the aforementioned issue, our group incorporated polyacrylamide (PAM) hydrogels into poly(4,4′-diphenylether-5,5′-bibenzimidazole) (OPBI), named OPBI-AM, to prepare a wide-temperature-range PEM. [13] The OPBI-AM membrane was self-assembled from OPBI and acrylamide, after which PAM was naturally formed beneath OPBI. The water and PA absorptions of the PAM hydrogels improved the low-and hightemperature conductivities of OPBI-AM, they also accounted for the large swell ratio of PEM, which severely deteriorated the performance and durability of PEMFC. This cold start-up challenge must be improved. The introduction of branched Proton exchange membrane fuel cells (PEMFCs) are promising devices for clean power generation in fuel cell electric vehicles applications. The further request of high-efficiency and cost competitive technology make high-temperature proton exchange membranes utilizing phosphoric aciddoped polybenzimidazole be favored because they can work well up to 180 °C without extra humidifier. However, they face quick loss of phosphoric acid below 120 °C and resulting in the limits of commercialization. Herein UiO-66 derived carbon (porous carbon-ZrO 2 ), comprising branched poly(4,4′-diphenylether-5,5′-bibenzimidazole) and polyacrylamide hydrogels self-assembly (BHC1-4) membranes for wide-temperature-range operation (80-160 °C) is presented. These two-phase membranes contained the hygroscopicity of polyacrylamide hydrogels improve the low-temperature proton conductiv...

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“…We compared the rate performance of this work with the reported advanced SPEs in Fig. 5g 35,[44][45][46][47][48][49][50][51] . The strategy we proposed strongly enhances capacity retention at high current density with simple PEO-LiTFSI without any modi cations, better than other SPEs of complex design (details in Table S5).…”

Section: Performance With Insu Cient Ionic Conductivitymentioning

confidence: 99%

Expand the effective carriers in solid polymer electrolytes via anion-hosting cathode

Sun

Chen

et al. 2021

Preprint

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The non-reactive anion migration deteriorates the limited ionic conductivity of the solid polymer electrolytes (SPEs) and accelerates solid-state batteries failure. Here, we introduce an integrated approach in which polyvinyl ferrocene (PVF) cathode encourage anions and Li+ to act as effective carriers simultaneously. The concentration polarization and poor rate performance, caused by insufficient effective carriers, were addressed by the participation of anions in electrode reaction. Specifically, the PVF|Li battery matched with unmodified SPE (PEO-LiTFSI) showed 107 mAh g− 1 initial capacity at 100 µA cm− 2 and maintained 70% retention for more than 2800 cycles at 300 µA cm− 2 and 60°C. Moreover, the slight capacity decrease at 1000 µA cm− 2 and the successful batteries operation at minimal ionic conductivity (8.13×10− 6 S cm− 1) show that the current carrying capacity of SPEs was greatly improved without complex design. This strategy weakens the strict requirements for ion conductance and interface engineering of SPEs, and provides an efficient scenario for constructing advanced polymer-based all-solid-state batteries.

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Thiol‐Branched Solid Polymer Electrolyte Featuring High Strength, Toughness, and Lithium Ionic Conductivity for Lithium‐Metal Batteries

Cited by 168 publications

References 48 publications

High ionic conduction, toughness and self-healing poly(ionic liquid)-based electrolytes enabled by synergy between flexible units and counteranions

High ionic conduction, toughness and self-healing poly(ionic liquid)-based electrolytes enabled by synergy between flexible units and counteranions

Construction of Stable Wide‐Temperature‐Range Proton Exchange Membranes by Incorporating a Carbonized Metal–Organic Frame into Polybenzimidazoles and Polyacrylamide Hydrogels

Expand the effective carriers in solid polymer electrolytes via anion-hosting cathode

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