An amorphous poly(vinylidene fluoride-co-hexafluoropropylene) based gel polymer electrolyte for magnesium ion battery

Singh, Rupali; Janakiraman, S.; Agrawal, Ashutosh; Ghosh, Sudipto; Venimadhav, A.; Biswas, Koushik

doi:10.1016/j.jelechem.2019.113788

Cited by 31 publications

(12 citation statements)

References 57 publications

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“…This effect was due to the large specific surface area and the pore volume of HKUST-1 nanoparticles dispersed in the PHGE electrolyte, which give them a higher liquid electrolyte absorption and lead to an increase in IC . In addition, the PHGE electrolyte had more amorphous regions than the PGE electrolyte, which also increased in ion mobility . The activation energies ( E a ) of these electrolytes was an indication of ion mobility in which a lower E a indicated that Li + or Na + moved more easily in the electrolyte. , It was worth noting that due to particle agglomeration hindering ion transport, the increased HKUST-1 nanoparticle content led to decreased IC (Figure S1a,b).…”

Section: Results and Discussionmentioning

confidence: 99%

“…33 In addition, the PHGE electrolyte had more amorphous regions than the PGE electrolyte, which also increased in ion mobility. 34 The activation energies (E a ) of these electrolytes was an indication of ion mobility in which a lower E a indicated that Li + or Na + moved more easily in the electrolyte. 32,35 It was worth noting that due to particle agglomeration hindering ion transport, the increased HKUST-1 nanoparticle content led to decreased IC (Figure S1a,b).…”

Section: Resultsmentioning

confidence: 99%

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Metal–Organic Framework-Supported Poly(ethylene oxide) Composite Gel Polymer Electrolytes for High-Performance Lithium/Sodium Metal Batteries

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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Thanks to their high energy density, lithium/sodium metal batteries (LMBs/SMBs) are considered to be the most promising next-generation energy storage system. However, the instability of the electrode/electrolyte interface and dendrite growth seriously hinders commercial application of LMBs/SMBs. In addition, traditional liquid electrolytes are inflammable and explosive. As a key part of the battery, the electrolyte plays an important role in solving the abovementioned problems. Although solid electrolytes can alleviate dendrite growth and liquid electrolyte leakage, their low ionic conductivity and poor interfacial contact are not conducive to improvement of overall LMBs/SMB performances. Therefore, it is necessary to find a balance between liquid and solid electrolytes. Gel polymer electrolytes (GPEs) are one means for achieving high-performance LMBs/SMBs because they combine the advantages of liquid and solid electrolytes. Metal–organic frameworks (MOFs) benefit from high specific surface areas, ordered internal porous structures, organic–inorganic hybrid properties, and show great potential in modified electrolytes. Here, Cu-based MOF-supported poly(ethylene oxide) composite gel polymer electrolytes (CGPEs) were prepared by ultraviolet curing. This CGPE exhibited high ionic conductivity, a wide electrochemical window, and a high ion transference number. In addition, it also exhibited excellent cycle stability in symmetric batteries and LMBs/SMBs. This study showed that CGPE had great practical application potential in the next-generation LMBs/SMBs.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Metal–Organic Framework-Supported Poly(ethylene oxide) Composite Gel Polymer Electrolytes for High-Performance Lithium/Sodium Metal Batteries

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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“…High-safety, long cycle life batteries have received increasing attention, due to the frequent lithium ion battery (LIB) explosion accidents. − Many researchers have tried to overcome this dilemma by replacing highly reactive lithium with other multivalent metal ions such as Mg 2+ , Zn 2+ , Al 3+ , Ca 2+ , etc. − Among them, RMBs are believed to be a potential energy storage system due to their high security, high energy density, and rich magnesium resources on earth. − In addition, RMBs can also deliver a high working voltage due to their inherent low electrode potential (−2.37 V vs SHE). Despite the abovementioned advantages, the practical application of RMBs is still limited by many factors. − One of the biggest bottlenecks is the lack of appropriate cathode materials. , Compared with Li + , the high charge density of divalent Mg 2+ makes it difficult for Mg 2+ to be intercalated into conventional cathode materials. Moreover, the strong interaction between Mg 2+ and the host lattice causes sluggish solid-phase diffusion of Mg 2+ , which causes the rapid capacity decay of batteries …”

Section: Introductionmentioning

confidence: 99%

Ultralong-Lifespan Magnesium Batteries Enabled by the Synergetic Manipulation of Oxygen Vacancies and Electronic Conduction

Wen

Jiang

et al. 2021

ACS Appl. Mater. Interfaces

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As a potential next-generation energy storage system, rechargeable magnesium batteries (RMBs) have been receiving increasing attention due to their excellent safety performance and high energy density. However, the sluggish kinetics of Mg2+ in the cathode has become one of the main bottlenecks restricting the development of RMBs. Here, we introduce oxygen vacancies to spherical NaV6O15 cross-linked with carbon nanotubes (CNTs) (denoted as SNVO X -CNT) as a cathode material to achieve an impressive long-term cycle life of RMBs. The introduction of oxygen vacancies can improve the electrochemical performance of the NaV6O15–X cathode material. Besides, owing to the introduction of CNTs, excellent internal/external electronic conduction paths can be built inside the whole electrode, which further achieves excellent electrochemical performance. Moreover, such a unique structure can efficiently improve the diffusion kinetics of Mg2+ (ranging from 1.28 × 10–12 to 7.21 × 10–12 cm2·s–1). Simulation calculations further prove that oxygen vacancies can cause Mg2+ to be inserted in NaV6O15–X . Our work proposes a strategy for the synergistic effect of oxygen vacancies and CNTs to improve the diffusion coefficient of Mg2+ in NaV6O15 and enhance the electrochemical performance of RMBs.

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“…However, the organic electrolyte used in LIBs is flammable and toxic, which makes them unsafe. The inhomogeneous distribution of Li sources has also led to soaring prices of LIBs in recent years [12,13] . To overcome these obstacles, people shifted their focus to another energy storage system, the multi‐valent ion battery.…”

Section: Introductionmentioning

confidence: 99%

Silk Fibroin Coating Enables Dendrite‐free Zinc Anode for Long‐Life Aqueous Zinc‐Ion Batteries

Yang

Zhang

et al. 2022

ChemSusChem

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Due to the advantages of the low cost of Zn and the safety of aqueous electrolytes, the aqueous Zn ion battery (AZIB) is expected to become the next‐generation battery after lithium‐ion batteries. However, the problems of Zn anode dendrite growth, self‐corrosion, and passivation in AZIBs lead to short cycle life and short circuit of the battery. In this work, uniform and stable Silk II‐silk fibroin (Silk II‐SF) coating was prepared on the surface of Zn anode by a simple method. Experiments showed that the SF coating could prevent dendritic growth and hydrogen evolution corrosion. Therefore, symmetric cells using Silk II‐SF@Zn anode achieved a cycle life over 3300 and 1500 h at current densities of 10 and 20 mA cm−2, respectively. Using Silk II‐SF coating to protect Zn anode is a simple and effective strategy to realize dendrite‐free Zn anode and long‐cycle‐life AZIBs.

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An amorphous poly(vinylidene fluoride-co-hexafluoropropylene) based gel polymer electrolyte for magnesium ion battery

Cited by 31 publications

References 57 publications

Metal–Organic Framework-Supported Poly(ethylene oxide) Composite Gel Polymer Electrolytes for High-Performance Lithium/Sodium Metal Batteries

Metal–Organic Framework-Supported Poly(ethylene oxide) Composite Gel Polymer Electrolytes for High-Performance Lithium/Sodium Metal Batteries

Ultralong-Lifespan Magnesium Batteries Enabled by the Synergetic Manipulation of Oxygen Vacancies and Electronic Conduction

Silk Fibroin Coating Enables Dendrite‐free Zinc Anode for Long‐Life Aqueous Zinc‐Ion Batteries

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