scholarly journals Ionic liquid–based click-ionogels

2019 ◽  
Vol 5 (8) ◽  
pp. eaax0648 ◽  
Author(s):  
Yongyuan Ren ◽  
Jiangna Guo ◽  
Ziyang Liu ◽  
Zhe Sun ◽  
Yiqing Wu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Heat Stability ◽  
Energy Storage Devices ◽  
Simple Method ◽  
Practical Applications ◽  
Storage Devices ◽  
Freeze Thaw ◽  
Triboelectric Nanogenerators ◽  
High Ultimate Tensile Strength

Gels that are freeze-resistant and heat-resistant and have high ultimate tensile strength are desirable in practical applications owing to their potential in designing flexible energy storage devices, actuators, and sensors. Here, a simple method for fabricating ionic liquid (IL)–based click-ionogels using thiol-ene click chemistry under mild condition is reported. These click-ionogels continue to exhibit excellent mechanical properties and resilience after 10,000 fatigue cycles. Moreover, due to several unique properties of ILs, these click-ionogels exhibit high ionic conductivity, transparency, and nonflammability performance over a wide temperature range (−75° to 340°C). Click-ionogel–based triboelectric nanogenerators exhibit excellent mechanical, freeze-thaw, and heat stability. These promising features of click-ionogels will promote innovative applications in flexible and safe device design.

scholarly journals Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4000
Author(s):  
Eunhwan Kim ◽  
Juyeon Han ◽  
Seokgyu Ryu ◽  
Youngkyu Choi ◽  
Jeeyoung Yoo
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
Lithium Ion ◽  
Electrochemical Energy Storage ◽  
Storage Device ◽  
Energy Storage Device ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Storage Ability ◽  
Electrochemical Energy

For decades, improvements in electrolytes and electrodes have driven the development of electrochemical energy storage devices. Generally, electrodes and electrolytes should not be developed separately due to the importance of the interaction at their interface. The energy storage ability and safety of energy storage devices are in fact determined by the arrangement of ions and electrons between the electrode and the electrolyte. In this paper, the physicochemical and electrochemical properties of lithium-ion batteries and supercapacitors using ionic liquids (ILs) as an electrolyte are reviewed. Additionally, the energy storage device ILs developed over the last decade are introduced.

Microwave-Assisted Expanded Graphite as a Long Cyclic Cathode for the Lithium Dual-Ion Battery

2021 ◽  
Vol 21 (7) ◽  
pp. 3989-3995
Author(s):  
Tejaswi Tanaji Salunkhe ◽  
Il Tae Kim
Keyword(s):  
High Capacity ◽  
Expanded Graphite ◽  
Energy Storage Devices ◽  
Safety Hazards ◽  
Practical Applications ◽  
Storage Devices ◽  
Rate Test ◽  
High Theoretical Capacity ◽  
Ft Ir ◽  
Graphite Sheets

Lithium metal (Li) has been recognized as a promising anode for most energy storage devices, owing to its high theoretical capacity. Nevertheless, Li anode present serious safety hazards and have a rapidly fading capacity, which limits its practical applications. Herein, a lithium-expanded graphite dual-ion battery (Li-EG DIB) was developed by combining a Li metal sheet as an anode with expanded graphite (EG) as a cathode. EG was produced by microwave (MW) photons energy (~1 × 10-5 eV) at different time durations (15, 30, 45, and 60 s) to allow moderate expansion between the graphite sheets and the removal of the surface functional groups that encourage the intercalation and de-intercalation of the ions; consequently, the capacity was improved. The MW-EG samples were characterized by X-ray powder diffraction (XRD), Raman spectroscopy, and Fourier transform infrared spectrophotometry (FT-IR). The EG synthesized at 45 s in MW exhibited a high capacity and a stable and long cycling life. The charge capacity of the Li–EG-45 DIB after 500 cycles at 0.05 Ag-1 was 20.3 mAh g-1 in the voltage window of 2–5 V. It is worth noting that the EG-45 electrode showed ~100% capacity retention, even after the rate test.

Ionic Liquids in Surface Protection of Aluminum and Its Alloys

2019 ◽  
Author(s):  
Joaquin Arias-Pardilla ◽  
Tulia Espinosa ◽  
José Sanes ◽  
Ana Eva Jiménez ◽  
Ginés Martínez-Nicolás ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Industrial Applications ◽  
Energy Storage Devices ◽  
New Techniques ◽  
Surface Protection ◽  
Storage Devices ◽  
Potential Applications

Aluminum and its alloys are used in an increasing number of applications but the development of surface coatings and new techniques for corrosion resistance enhancement and for increasing wear resistance will be determinant for applications under aggressive environments. Ionic liquids have already found many industrial applications, including their use in surface protection. The present article will focus on the use of ionic liquids in aluminum and its alloys surface protection applications, including corrosion protection and inhibition, anodization and passivation processes, wear resistance, and potential applications of ionic liquid electrolytes in energy storage devices.

scholarly journals Fundamental aspects of electrochemically controlled wetting of nanoscale composite materials

2017 ◽  
Vol 199 ◽  
pp. 75-99 ◽  
Author(s):  
A. Robert Hillman ◽  
Karl S. Ryder ◽  
Hani K. Ismail ◽  
Asuman Unal ◽  
Annelies Voorhaar
Keyword(s):  
Ionic Liquid ◽  
Composite Materials ◽  
Composite Films ◽  
Transport Processes ◽  
Electronic Charge ◽  
Energy Storage Devices ◽  
Protic Ionic Liquid ◽  
Practical Applications ◽  
Wave Measurements ◽  
Multi Walled Carbon Nanotubes

Electroactive films based on conducting polymers have numerous potential applications, but practical devices frequently require a combination of properties not met by a single component. This has prompted an extension to composite materials, notably those in which particulates are immobilised within a polymer film. Irrespective of the polymer and the intended application, film wetting is important: by various means, it facilitates transport processes – of electronic charge, charge-balancing counter ions (“dopant”) and analyte/reactant molecules – and motion of polymer segments. While film solvent content and transfer have been widely studied for pristine polymer films exposed to molecular solvents, extension to non-conventional solvents (such as ionic liquids) or to composite films has been given much less attention. Here we consider such cases based on polyaniline films. We explore two factors, the nature of the electrolyte (solvent and film-permeating ions) and the effect of introducing particulate species into the film. In the first instance, we compare film behaviours when exposed to a conventional protic solvent (water) with an aprotic ionic liquid (Ethaline) and the intermediate case of a protic ionic liquid (Oxaline). Secondly, we explore the effect of inclusion of physically diverse particulates: multi-walled carbon nanotubes, graphite or molybdenum dioxide. We use electrochemistry to control and monitor the film redox state and change therein, and acoustic wave measurements to diagnose rheologicallyvs.gravimetrically determined response. The outcomes provide insights of relevance to future practical applications, including charge/discharge rates and cycle life for energy storage devices, “salt” transfer in water purification technologies, and the extent of film “memory” of previous environments when sequentially exposed to different media.

Ionic liquid batteries: Chemistry to replace alkaline/acid energy storage devices

2011 ◽  
Vol 56 (9) ◽  
pp. 3375-3379 ◽  
Author(s):  
Thomas E. Sutto ◽  
Teresa T. Duncan ◽  
Tiffany C. Wong ◽  
Karen McGrady
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
Energy Storage Devices ◽  
Storage Devices

scholarly journals Strongly Anchoring Polysulfides by Hierarchical Fe3O4/C3N4 Nanostructures for Advanced Lithium–Sulfur Batteries

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Soochan Kim ◽  
Simindokht Shirvani-Arani ◽  
Sungsik Choi ◽  
Misuk Cho ◽  
Youngkwan Lee
Keyword(s):  
High Surface ◽  
Specific Capacity ◽  
High Surface Area ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Shuttle Effect ◽  
Practical Applications ◽  
Storage Devices ◽  
Lithium Sulfur Batteries

AbstractLi–S batteries have attracted considerable interest as next-generation energy storage devices owing to high energy density and the natural abundance of sulfur. However, the practical applications of Li–S batteries are hampered by the shuttle effect of soluble lithium polysulfides (LPS), which results in low cycle stability. Herein, a functional interlayer has been developed to efficiently regulate the LPS and enhance the sulfur utilization using hierarchical nanostructure of C3N4 (t-C3N4) embedded with Fe3O4 nanospheres. t-C3N4 exhibits high surface area and strong anchoring of LPS, and the Fe3O4/t-C3N4 accelerates the anchoring of LPS and improves the electronic pathways. The combination of these materials leads to remarkable battery performance with 400% improvement in a specific capacity and a low capacity decay per cycle of 0.02% at 2 C over 1000 cycles, and stable cycling at 6.4 mg cm−2 for high-sulfur-loading cathode.

Hexagonal NaYF4 Nanotube Arrays Obtained via Solvothermal Process

2012 ◽  
Vol 554-556 ◽  
pp. 667-670
Author(s):  
Li Tian ◽  
Jin Liu ◽  
Fei Yu Chen ◽  
Qi Liang Sun
Keyword(s):  
Large Scale ◽  
Raw Materials ◽  
Heat Stability ◽  
High Heat ◽  
Nanotube Arrays ◽  
Yttrium Nitrate ◽  
Simple Method ◽  
Yttrium Fluoride ◽  
X Ray ◽  
Practical Applications

Hexagonal sodium yttrium fluoride has been successfully synthesized via a facile solvothermal route, using yttrium nitrate, sodium fluoride and polyethanediol as raw materials to react in propanetriol solvent. The as-prepared product was characterized by powder X-ray diffraction, scanning electron microscopy, thermogravimetric and differential thermal analysis, Fourier transform infrared spectrum and energy dispersive X-ray spectrum. The characterization results revealed that the products are hexagonal and denoted as NaYF4. The as-synthesized hexagonal sodium yttrium fluoride composed of hollow-structured nanotubes self-assembled and arrayed orientedly to take on bamboo raft morphology. Hexagonal NaYF4 nanotube arrays exhibited high heat stability. This study provides a simple method to prepare bamboo raft-shaped NaYF4 in large scale, which broads their practical applications.

Recent Progress on Pristine Metal/Covalent-Organic Frameworks and Their Composites for Lithium–Sulfur Batteries

2021 ◽  
Author(s):  
Zijian Zheng ◽  
Huan Ye ◽  
Zaiping Guo
Keyword(s):  
Energy Storage ◽  
Specific Energy ◽  
Recent Progress ◽  
Covalent Organic Frameworks ◽  
Energy Storage Devices ◽  
Practical Applications ◽  
Storage Devices ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Lithium–sulfur (Li–S) batteries have emerged as promising energy storage devices due to their high theoretical specific energy densities; their practical applications, however, have been restricted due to their poor cycling...

Sign in / Sign up

Export Citation Format

Share Document