Machine learning discovered nano-circuitry for nonlinear ion transport in nanoporous materials

2021 ◽  
Author(s):  
Hualin Zhan ◽  
Richard Sandberg ◽  
Zhiyuan Xiong ◽  
Qinghua Liang ◽  
Ke Xie ◽  
...  
Keyword(s):  
Machine Learning ◽  
Ion Transport ◽  
Electrical Response ◽  
Nanoporous Materials ◽  
Electrical Model ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Chemical Theory ◽  
Nonlinear Ion Transport ◽  
The Impact

Abstract Connecting physio-chemical theory with electrical model is essential yet difficult for evaluating the impact of nonlinear ion transport on the performance of ionic circuits and electrochemical energy storage devices1-6. Here we demonstrate that machine learning can resolve this difficulty and produce physics-based nano-circuitry. Starting from a physio-chemical perspective, we first reveal an anomalous diffusion-enhanced migration of ions in nanopores, which exhibits a nonlinear electrical response. Using machine learning, we discover its underlying mathematical equation, and produce a dynamically varying ionic resistance for construction of nano-circuitry model. Based on the physio-chemical understanding of nano-circuitry model, we discover in supercapacitors that the nonlinear ion transport can lead to a Faradaic-like current peak in non-Faradaic processes and an asymmetric charging/discharging without ion desolvation, adding new perspectives to physio-chemistry.

scholarly journals Characteristics of Glycerolized Chitosan: NH4NO3-Based Polymer Electrolyte for Energy Storage Devices with Extremely High Specific Capacitance and Energy Density Over 1000 Cycles

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2718
Author(s):  
Shujahadeen B. Aziz ◽  
M. A. Brza ◽  
Iver Brevik ◽  
M. H. Hamsan ◽  
Rebar T. Abdulwahid ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Polymer Electrolyte ◽  
Specific Capacitance ◽  
Electrochemical Techniques ◽  
High Specific Capacitance ◽  
Transference Number ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
The Impact

In this work, plasticized polymer electrolyte films consisting of chitosan, ammonium nitrate (NH4NO3) and glycerol for utilization in energy storage devices was presented. Various microscopic, spectroscopic and electrochemical techniques were used to characterize the concerned electrolyte and the electrical double-layer capacitor (EDLC) assembly. The nature of complexation between the polymer electrolyte components was examined via X-ray diffraction analysis. In the morphological study, field emission scanning electron microscopy (FESEM) was used to investigate the impact of glycerol as a plasticizer on the morphology of films. The polymer electrolyte (conducting membrane) was found to have a conductivity of 3.21 × 10−3 S/cm. It is indicated that the number density (n), mobility (μ) and diffusion coefficient (D) of ions are increased with the glycerol amount. The mechanism of charge storing was clarified, which implies a non-Faradaic process. The voltage window of the polymer electrolyte is 2.32 V. It was proved that the ion is responsible for charge-carrying via measuring the transference number (TNM). It was also determined that the internal resistance of the EDLC assembly lay between 39 and 50 Ω. The parameters associated with the EDLC assembly are of great importance and the specific capacitance (Cspe) was determined to be almost constant over 1 to 1000 cycles with an average of 124 F/g. Other decisive parameters were found: energy density (18 Wh/kg) and power density (2700 W/kg).

scholarly journals Remarkable Electrochemical and Ion-Transport Characteristics of Magnesium-Fluorinated Alkoxyaluminate–Diglyme Electrolytes for Magnesium Batteries

2021 ◽  
Author(s):  
Toshihiko Mandai ◽  
Yong Youn ◽  
Yoshitaka Tateyama
Keyword(s):  
Energy Storage ◽  
Ion Transport ◽  
Large Scale ◽  
Energy Storage Devices ◽  
Magnesium Metal ◽  
Storage Devices ◽  
Magnesium Batteries ◽  
Metal Anodes

Magnesium batteries (MBs) are fascinating options for large-scale energy-storage devices because the properties of magnesium metal anodes are more advantageous than those of their lithium or sodium counterparts. Moreover, the...

Enhanced Li-ion transport in divalent metal-doped Li2SnO3

2021 ◽  
Author(s):  
Yohandys A. Zulueta ◽  
Minh Tho Nguyen
Keyword(s):  
Energy Storage ◽  
Ion Transport ◽  
Divalent Metal ◽  
Li Ion Batteries ◽  
Research Topics ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Li Ion ◽  
Active Research ◽  
Metal Doped

The improvement of Li-ion transport properties and doping engineering in Li-ion batteries are currently active research topics in the search for next-generation energy storage devices.

scholarly journals The impact of working conditions package traction on the exploitation of buses with electric drive

2017 ◽  
Vol 2017 (2) ◽  
pp. 10-15
Author(s):  
Marcin Koniak
Keyword(s):  
Electric Drive ◽  
Lithium Ion ◽  
Operating Conditions ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Depth Of Discharge ◽  
Electric Bus ◽  
Operating Current ◽  
Number Of Cycles ◽  
The Impact

This paper described the impact of the traction batteries operating conditions on their parameters and the operation of the electric bus. The author in introduction pointed out the advantages of transport based on vehicles with electric drive. He also said that most of the electric buses disadvantages is related to the batteries. The most popular types of energy storage devices used in electric buses have been presented. The rest of this paper is mentioned a number of factors and their impact on the battery exploitation. Are described, among others, temperature, number of cycles, depth of discharge, the operating current. Problems arising from the use of lithium-ion batteries can be reduced by proper selection of its type preceded by an analysis of its future operating conditions.

Ideal two-dimensional solid electrolytes for fast ion transport: metal trihalides MX3 with intrinsic atomic pores

Nanoscale ◽  
2020 ◽  
Vol 12 (13) ◽  
pp. 7188-7195 ◽  
Author(s):  
Maokun Wu ◽  
Pan Liu ◽  
Luyan Li ◽  
Hong Dong ◽  
Yahui Cheng ◽  
...  
Keyword(s):  
Energy Storage ◽  
Ion Transport ◽  
Solid Electrolytes ◽  
Two Dimensional ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Fast Ion

Two-dimensional MX3 materials with intrinsic atomic pores are proposed as ideal solid electrolytes in ultrafast ionic and energy storage devices.

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