Saving electric energy by integrating a photoelectrode into a Li-ion battery

2015 ◽  
Vol 3 (42) ◽  
pp. 20903-20907 ◽  
Author(s):  
Qi Li ◽  
Na Li ◽  
Masayoshi Ishida ◽  
Haoshen Zhou
Keyword(s):  
Electric Energy ◽  
Li Ion Battery ◽  
Lithium Anode ◽  
Redox Shuttle ◽  
Li Ion

We here report a novel photoassisted chargeable Li-ion battery (LIB) consisting of a LiFePO4 cathode, a lithium anode and a TiO2 photoelectrode coupled with an iodide (I−) ion redox shuttle for saving electric energy.

Electrochemistry and transport properties of electrolytes modified with ferrocene redox-active ionic liquid additives

2020 ◽  
Vol 98 (9) ◽  
pp. 554-563
Author(s):  
Bruno Gélinas ◽  
Thomas Bibienne ◽  
Mickaël Dollé ◽  
Dominic Rochefort
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Current Collector ◽  
Transport Numbers ◽  
Excess Charge ◽  
Li Ion Battery ◽  
Energy Storage Devices ◽  
Redox Active ◽  
Redox Shuttle ◽  
Li Ion

Used in their pure, undiluted form, ionic liquids usually result in Li-ion battery electrolytes with inadequate performance due low Li+ transport numbers (tLi+). Alternatively, they can be used as additives dissolved in carbonates to maintain a high tLi+ while providing the electrolyte with additional properties such as resistance to combustion, current collector passivation, and decreased Li dendritic growth. Additional properties can be imparted to the ionic liquid via the modification of their structure. Ionic liquids modified with electroactive moieties such as ferrocene (Fc-IL) can be used as an additive in Li-ion battery (LiB) electrolytes to prevent cathode over-oxidation via the redox shuttle mechanism. The aim of the present work is to evaluate the properties of LiB electrolytes modified with such Fc-IL at different concentrations. At low concentrations (0.3–0.5 mol/L), the redox-active ionic liquid behaves as expected for a redox shuttle. We show that at 1 mol/L, however, the redox ionic liquid yields a different discharge behavior after the overcharging step, providing an increase in discharge capacity. This behavior is linked to the deposition of the ferrocenium-IL at the positive electrode. Such electrolyte is non-flammable and is highly efficient to achieve shuttling of excess charge. Based on this principle, it is expected that novel ionic liquids can be designed for development of other types of additives and contribute to developing safer battery electrolytes. As a part of this commemorative issue, this contribution highlights the type of collaborative research currently being done on energy storage devices at the Department of Chemistry at the Université de Montréal.

scholarly journals Overcharge Self-Regulated Li-ion Battery Based on LiFePO4via a Solid State Combined Cathode

MRS Advances ◽  
2017 ◽  
Vol 2 (8) ◽  
pp. 445-450
Author(s):  
Fei Gu ◽  
Kichang Jung ◽  
Taehoon Lim ◽  
Alfredo A. Martinez-Morales
Keyword(s):  
Solid State ◽  
Self Regulation ◽  
Lithium Ion ◽  
Cathode Side ◽  
Anode Side ◽  
Li Ion Battery ◽  
Safe Level ◽  
Redox Shuttle ◽  
Li Ion ◽  
Post Synthesis

ABSTRACTSafety is one of the most crucial problems faced by the lithium-ion battery (LIBs) industry. In this work, we propose a strategy to avoid overcharging of a battery via the application of a solid-state combined cathode. The goal of this research is to produce LIBs with overcharge self-regulation capabilities. In order to achieve self-regulation functionality, 1,4-di-tert-butyl-2,5-dimethoxybenzene (DBB) is added to as-synthesized LiFePO4,post synthesis. DBB has a trigger voltage of 3.9 V. When this voltage is reached, DBB forms a reduced ion that is released into the electrolyte from the cathode side. The DBB ion transfers to the anode side where it oxidizes and transfers back to the cathode side. This process forms a redox shuttle and consumes the extra charges keeping the voltage at a safe level (i.e. 3.9 V). The DBB redox shuttle protects the LiFePO4-based LIBs with working voltage between 3.4 and 3.5 V. The cycleability of assembled batteries is tested using an Arbin Tester.

Oxidized PAN nanofibrous membrane as a separator for Li-ion battery

2014 ◽  
Author(s):  
J.H. Lee ◽  
M.H. Kim ◽  
S.H. Lee ◽  
S.Y. Jin ◽  
W.H. Park
Keyword(s):  
Nanofibrous Membrane ◽  
Li Ion Battery ◽  
Li Ion

ADAPTIVE ALGORITHMS OF CONTROLLING THE SMART LI-ION BATTERY CONTROLLER

2018 ◽  
pp. 104-110
Author(s):  
I. A. Borovoy ◽  
O. V. Danishevskiy ◽  
A. V. Parfenov
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Electric Energy ◽  
Lithium Ion ◽  
Control Device ◽  
Control Algorithms ◽  
Battery System ◽  
Electronic Control Device ◽  
Li Ion ◽  
Cell Balancing

The article substantiates the necessity of organizing the control system of modern lithium-ion batteries. Passive and active methods of cell balancing are described. The method of increase of efficiency of modes of accumulation of electric energy by means of the special electronic control device (the intellectual controller) and its further use for power supply of the functional equipment is considered. The structure of the intelligent controller as a part of the autonomous power supply system with the description of its main functional units and purpose is presented. Practical results of application in the intellectual controller of original adaptive control algorithms defining modes of operation of lithium-ion drives depending on various environmental conditions are resulted. The results of the analysis obtained by the results of experimental operation of the battery system, reflecting the qualitative and quantitative advantages of the proposed method.

A NOVEL CLOSED LOOP PROCESS FOR RECYCLING SPENT Li-ION BATTERY CATHODE MATERIALS

2021 ◽  
pp. 1-16
Author(s):  
Joey Chung-Yen Jung ◽  
Norman Chow ◽  
Anca Nacu ◽  
Mariam Melashvili ◽  
Alex Cao ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Closed Loop ◽  
Li Ion Battery ◽  
Li Ion

Carbon-coated TiNb2O7 nanosheet arrays as self-supported high mass-loading anode for flexible Li-ion battery

2021 ◽  
Author(s):  
Jinquan Zhou ◽  
Haoyang Dong ◽  
Yao Chen ◽  
yihua Ye ◽  
Liang Xiao ◽  
...  
Keyword(s):  
Diffusion Length ◽  
High Mass ◽  
Carbon Cloth ◽  
Mass Loading ◽  
Solvothermal Process ◽  
Li Ion Battery ◽  
Nanosheet Arrays ◽  
Carbon Coated ◽  
Li Ion ◽  
First Time

TiNb2O7 anode constructed with carbon-coated nanosheet arrays on carbon cloth is prepared by a facile solvothermal process and post carbon-coating for the first time. With nanosized diffusion-length and reduced polarization...

Mesoporous Silica Template-Assisted Synthesis of 1T-MoS2 as the Anode for Li-Ion Battery Applications

2021 ◽  
Vol 35 (3) ◽  
pp. 2683-2691
Author(s):  
Selvaraj Venkateshwaran ◽  
Thamodaran Partheeban ◽  
Manickam Sasidharan ◽  
Sakkarapalayam Murugesan Senthil Kumar
Keyword(s):  
Mesoporous Silica ◽  
Li Ion Battery ◽  
Li Ion ◽  
Silica Template ◽  
Template Assisted Synthesis
Sign in / Sign up

Export Citation Format

Share Document