scholarly journals High Coulombic efficiency aluminum-ion battery using an AlCl3-urea ionic liquid analog electrolyte

2017 ◽  
Vol 114 (5) ◽  
pp. 834-839 ◽  
Author(s):  
Michael Angell ◽  
Chun-Jern Pan ◽  
Youmin Rong ◽  
Chunze Yuan ◽  
Meng-Chang Lin ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Ionic Liquid ◽  
Energy Storage ◽  
Coulombic Efficiency ◽  
Intercalation Compound ◽  
Molar Ratio ◽  
Storage Device ◽  
In Situ Raman Spectroscopy ◽  
Charge Discharge ◽  
High Coulombic Efficiency

In recent years, impressive advances in harvesting renewable energy have led to a pressing demand for the complimentary energy storage technology. Here, a high Coulombic efficiency (∼99.7%) Al battery is developed using earth-abundant aluminum as the anode, graphite as the cathode, and a cheap ionic liquid analog electrolyte made from a mixture of AlCl3and urea in a 1.3:1 molar ratio. The battery displays discharge voltage plateaus around 1.9 and 1.5 V (average discharge = 1.73 V) and yielded a specific cathode capacity of ∼73 mAh g−1at a current density of 100 mA g−1(∼1.4 C). High Coulombic efficiency over a range of charge–discharge rates and stability over ∼150–200 cycles was easily demonstrated. In situ Raman spectroscopy clearly showed chloroaluminate anion intercalation/deintercalation of graphite (positive electrode) during charge–discharge and suggested the formation of a stage 2 graphite intercalation compound when fully charged. Raman spectroscopy and NMR suggested the existence of AlCl4−, Al2Cl7−anions and [AlCl2·(urea)n]+cations in the AlCl3/urea electrolyte when an excess of AlCl3was present. Aluminum deposition therefore proceeded through two pathways, one involving Al2Cl7−anions and the other involving [AlCl2·(urea)n]+cations. This battery is a promising prospect for a future high-performance, low-cost energy storage device.

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.

scholarly journals dual-ion charge-discharge behaviors of Na-NiNc and NiNc-NiNc batteries

2021 ◽  
Author(s):  
Jinkwang Hwang ◽  
Rika Hagiwara ◽  
Hiroshi Shinokubo ◽  
Ji-Young Shin
Keyword(s):  
Discharge Capacity ◽  
Electrode Material ◽  
High Stability ◽  
Coulombic Efficiency ◽  
Active Electrode ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Charge Discharge ◽  
High Coulombic Efficiency

Dual-ion sodium-organic secondary batteries were provided with antiaromatic porphyrinoid, NiNc as an active electrode material, which implemented inherent charge-discharge behaviors with high discharge capacity, high stability, high Coulombic efficiency with...

High-energy green supercapacitor driven by ionic liquid electrolytes as an ultra-high stable next-generation energy storage device

2018 ◽  
Vol 383 ◽  
pp. 102-109 ◽  
Author(s):  
Ranjith Thangavel ◽  
Aravindaraj G. Kannan ◽  
Rubha Ponraj ◽  
Vigneysh Thangavel ◽  
Dong-Won Kim ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
High Energy ◽  
Storage Device ◽  
Energy Storage Device ◽  
Next Generation ◽  
Liquid Electrolytes

High Coulombic Efficiency Na–O2 Batteries Enabled by a Bilayer Ionogel/Ionic Liquid

2019 ◽  
Vol 10 (22) ◽  
pp. 7050-7055 ◽  
Author(s):  
The An Ha ◽  
Asier Fdz De Anastro ◽  
Nagore Ortiz-Vitoriano ◽  
Jian Fang ◽  
Douglas R. MacFarlane ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Coulombic Efficiency ◽  
High Coulombic Efficiency

Nitrogen-Enriched Carbons from Alkali Salts with High Coulombic Efficiency for Energy Storage Applications

2013 ◽  
Vol 3 (6) ◽  
pp. 708-712 ◽  
Author(s):  
Bingkun Guo ◽  
Xiao-Guang Sun ◽  
Gabriel M. Veith ◽  
Zhonghe Bi ◽  
Shannon M. Mahurin ◽  
...  
Keyword(s):  
Energy Storage ◽  
Coulombic Efficiency ◽  
Energy Storage Applications ◽  
Alkali Salts ◽  
High Coulombic Efficiency

Substituent Effect of Imidazolium Ionic Liquid: A Potential Strategy for High Coulombic Efficiency Al Battery

2019 ◽  
Vol 123 (18) ◽  
pp. 11522-11528 ◽  
Author(s):  
Congrong Yang ◽  
Suli Wang ◽  
Xiaoming Zhang ◽  
Qiang Zhang ◽  
Wenjia Ma ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Substituent Effect ◽  
Coulombic Efficiency ◽  
Imidazolium Ionic Liquid ◽  
Potential Strategy ◽  
High Coulombic Efficiency

scholarly journals Sustainable Preparation of Nanoporous Carbons via Dry Ball Milling: Electrochemical Studies Using Nanocarbon Composite Electrodes and a Deep Eutectic Solvent as Electrolyte

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3258
Author(s):  
Ana T. S. C. Brandão ◽  
Renata Costa ◽  
A. Fernando Silva ◽  
Carlos M. Pereira
Keyword(s):  
Energy Storage ◽  
Ball Milling ◽  
Surface Area ◽  
Choline Chloride ◽  
High Surface ◽  
Deep Eutectic Solvent ◽  
Molar Ratio ◽  
Storage Device ◽  
Composite Electrodes ◽  
Hydrogen Bond Donor

The urgent need to reduce the consumption of fossil fuels drives the demand for renewable energy and has been attracting the interest of the scientific community to develop materials with improved energy storage properties. We propose a sustainable route to produce nanoporous carbon materials with a high−surface area from commercial graphite using a dry ball−milling procedure through a systematic study of the effects of dry ball−milling conditions on the properties of the modified carbons. The microstructure and morphology of the dry ball−milled graphite/carbon composites are characterized by BET (Brunauer–Emmett–Teller) analysis, SEM (scanning electron microscopy), ATR−FTIR (attenuated total reflectance–Fourier transform infrared spectroscopy) and Raman spectroscopy. As both the electrode and electrolyte play a significant role in any electrochemical energy storage device, the gravimetric capacitance was measured for ball−milled material/glassy carbon (GC) composite electrodes in contact with a deep eutectic solvent (DES) containing choline chloride and ethylene glycol as hydrogen bond donor (HBD) in a 1:2 molar ratio. Electrochemical stability was tracked by measuring charge/discharge curves. Carbons with different specific surface areas were tested and the relationship between the calculated capacitance and the surface treatment method was established. A five−fold increase in gravimetric capacitance, 25.27 F·g−1 (G40) against 5.45 F·g−1, was found for commercial graphene in contact with DES. Optimal milling time to achieve a higher surface area was also established.

scholarly journals LiTFSI in 1-butyl-1-methylpyrrolidinium bis(fluorosulfonyl)amide: a possible electrolyte for ionic liquid based lithium ion batteries

2015 ◽  
Vol 17 (17) ◽  
pp. 11161-11164 ◽  
Author(s):  
Abhishek Lahiri ◽  
Thomas J. S. Schubert ◽  
Boyan Iliev ◽  
Frank Endres
Keyword(s):  
Raman Spectroscopy ◽  
Ionic Liquid ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Charge Discharge

We show using Raman spectroscopy and charge–discharge cycles a stable ionic liquid electrolyte LiTFSI/[Py1.4]FSI for lithium ion batteries.

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