scholarly journals Recent trends in batteries and lubricants for electric vehicles

2021 ◽  
Vol 13 (5) ◽  
pp. 168781402110217
Author(s):  
Raj Shah ◽  
Blerim Gashi ◽  
Sergio González-Poggini ◽  
Melanie Colet-Lagrille ◽  
Andreas Rosenkranz
Keyword(s):  
Surface Engineering ◽  
Combustion Engine ◽  
Steering System ◽  
Energy Output ◽  
Ongoing Research ◽  
Effective Utilization ◽  
Research Activities ◽  
Recent Trends ◽  
Li Ion ◽  
Driving Range

Future progress in hybrid and battery vehicles heavily relies on the optimization of involved battery components and lubricants. Attention must specifically be given to the material composition and surface coatings of the electrodes as well as the electrolyte used to maximize energy output, while also ensuring safety. Additionally, prioritizing the effective utilization of specific lubricants for electric motors and various tribological contacts, such as wheel bearings and the steering system, is the prospective goal of lubrication research. The energy output of the most promising battery, the Li-ion battery (LIB), must result in driving ranges, which can compete with the 600 km driving range of combustion engine (ICE) vehicles. Consequently, ongoing research activities in cell chemistry, electrode surface engineering, electrolyte engineering, and engine lubrication offer the greatest opportunity in achieving these goals.

scholarly journals A cooperative biphasic MoOx–MoPx promoter enables a fast-charging lithium-ion battery

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Sang-Min Lee ◽  
Junyoung Kim ◽  
Janghyuk Moon ◽  
Kyu-Nam Jung ◽  
Jong Hwa Kim ◽  
...  
Keyword(s):  
Anode Materials ◽  
Surface Engineering ◽  
Dominant Role ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Graphite Anode ◽  
Graphite Surface ◽  
High Rate ◽  
Fast Charging ◽  
Li Ion

AbstractThe realisation of fast-charging lithium-ion batteries with long cycle lifetimes is hindered by the uncontrollable plating of metallic Li on the graphite anode during high-rate charging. Here we report that surface engineering of graphite with a cooperative biphasic MoOx–MoPx promoter improves the charging rate and suppresses Li plating without compromising energy density. We design and synthesise MoOx–MoPx/graphite via controllable and scalable surface engineering, i.e., the deposition of a MoOx nanolayer on the graphite surface, followed by vapour-induced partial phase transformation of MoOx to MoPx. A variety of analytical studies combined with thermodynamic calculations demonstrate that MoOx effectively mitigates the formation of resistive films on the graphite surface, while MoPx hosts Li+ at relatively high potentials via a fast intercalation reaction and plays a dominant role in lowering the Li+ adsorption energy. The MoOx–MoPx/graphite anode exhibits a fast-charging capability (<10 min charging for 80% of the capacity) and stable cycling performance without any signs of Li plating over 300 cycles when coupled with a LiNi0.6Co0.2Mn0.2O2 cathode. Thus, the developed approach paves the way to the design of advanced anode materials for fast-charging Li-ion batteries.

A Methodological Approach for Supporting the Thermal Design of Li-Ion Battery for Customized Electric Vehicles

2014 ◽  
Author(s):  
Daniele Landi ◽  
Paolo Cicconi ◽  
Michele Germani
Keyword(s):  
Thermal Behavior ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Combustion Engine ◽  
Thermal Design ◽  
Battery Pack ◽  
Scale Production ◽  
Li Ion Battery ◽  
Suitable Alternative ◽  
Li Ion

An important issue in the mechanical industry is the reduction of the time to market, in order to meet quickly the customer needs. This goal is very important for SMEs that produce small lots of customized products. In the context of greenhouse gas emissions reduction, vehicles powered by electric motors seem to be the most suitable alternative to the traditional internal combustion engine vehicles. The market of customized electric vehicles is a niche market suitable for SMEs. Nowadays, the energy storage system of an electric vehicle powertrain consists of several Li-ion cells arranged in a container called battery pack. Particularly, the battery unit is considered as the most critical component in electric vehicle, because it impacts on performance and life cycle cost. Currently, the design of a battery pack mostly depends on the related market size. A longer design time is expected in the case of a large scale production. While a small customized production requires more agility and velocity in the design process. The proposed research focuses on a design methodology to support the designer in the evaluation of the battery thermal behavior. This work has been applied in the context of a customized small production. As test case, an urban electric light commercial vehicle has been analyzed. The designed battery layout has been evaluated and simulated using virtual prototyping tools. A cooling configuration has been analyzed and then prototyped in a physical vehicle. The virtual thermal behavior of a Li-ion battery has been validated at the test bench. The real operational conditions have been analyzed reproducing several ECE-15 driving cycles and many acceleration runs at different load values. Thermocouples have measured the temperature values during the physical experiments, in order to validate the analytical thermal profile evaluated with the proposed design approach.

scholarly journals Vadose zone measurement and modeling

1997 ◽  
Vol 54 (spe) ◽  
pp. 22-26 ◽  
Author(s):  
J. W. Hopmans ◽  
V. Clausnitzer ◽  
K.I. Kosugi ◽  
D.R. Nielsen ◽  
F. Somma
Keyword(s):  
Vadose Zone ◽  
Sao Paulo ◽  
University Of California ◽  
Crop Modeling ◽  
Soil Physics ◽  
Ongoing Research ◽  
General Overview ◽  
Physics Program ◽  
Research Activities ◽  
The University

The following treatise is a summary of some of the ongoing research activities in the soil physics program at the University of California in Davis. Each of the four listed areas win be presented at the Workshop on special topics on soil physics and crop modeling in Piracicaba at the University of Sao Paulo. We limited ourselves to a general overview of each area, but will present a more thorough discussion with examples at the Workshop.

scholarly journals Lignocellulosic biomass: a sustainable platform for the production of bio-based chemicals and polymers

2015 ◽  
Vol 6 (25) ◽  
pp. 4497-4559 ◽  
Author(s):  
Furkan H. Isikgor ◽  
C. Remzi Becer
Keyword(s):  
Lignocellulosic Biomass ◽  
Value Added ◽  
Ongoing Research ◽  
Research Activities

The ongoing research activities in the field of lignocellulosic biomass for production of value-added chemicals and polymers that can be utilized to replace petroleum-based materials are reviewed.

Surface Engineering Strategies of Layered LiCoO2Cathode Material to Realize High-Energy and High-Voltage Li-Ion Cells

2016 ◽  
Vol 7 (1) ◽  
pp. 1601507 ◽  
Author(s):  
Sujith Kalluri ◽  
Moonsu Yoon ◽  
Minki Jo ◽  
Suhyeon Park ◽  
Seungjun Myeong ◽  
...  
Keyword(s):  
High Voltage ◽  
Surface Engineering ◽  
High Energy ◽  
Li Ion

Behavioural modelling and analysis of hybrid vehicle steering systems

2003 ◽  
Vol 217 (5) ◽  
pp. 349-361 ◽  
Author(s):  
V D Mills ◽  
J R Wagner
Keyword(s):  
Electric Motor ◽  
Combustion Engine ◽  
Steering System ◽  
Hybrid Vehicles ◽  
Battery Pack ◽  
Hydraulic Pump ◽  
Power Steering ◽  
Steer By Wire ◽  
Steering Characteristics ◽  
Hydraulic Power Steering

Hybrid vehicles integrate an internal combustion engine, electric motor with accompanying battery pack and generator, and potentially fuel cells to realize greater fuel economy and reduced emission levels. A variety of powertrain operating scenarios exist including engine with belt-driven generator, electric motor using battery pack and/or fuel cell and, finally, engine and electric motor. Automotive subsystems such as hydraulic power steering cannot be consistently powered by a conventional belt-driven hydraulic pump since the engine may be frequently turned off to conserve energy. Thus, a need exists to investigate the dynamic behaviour of various steering systems for hybrid vehicles in terms of platform steering characteristics and power consumption. In this paper, empirical and analytical mathematical models will be presented for power (e.g. hydraulic, electric and steer by wire) rack and pinion steering units. The influence of chassis, tyre-road interface and steering system non-linearities are introduced. Representative numerical results will be presented and discussed to investigate a vehicle's transient response for each steering system configuration.

Ongoing research protocols for the pharmacological treatment of neuropsychiatric symptoms in dementia

2020 ◽  
pp. 1-9
Author(s):  
M. Canevelli ◽  
G. Remoli ◽  
M. Toccaceli Blasi ◽  
L. Tariciotti ◽  
G. Sarli ◽  
...  
Keyword(s):  
Research Effort ◽  
Neuropsychiatric Symptoms ◽  
Phase 1 ◽  
Research Priorities ◽  
Eligibility Criteria ◽  
Ongoing Research ◽  
Research Activities ◽  
Effective Interventions ◽  
Dementia Research ◽  
Ongoing Phase

The implementation of effective interventions for neuropsychiatric symptoms (NPS) is perceived as one of the most pressing research priorities in the field of dementia and one of the main unmet needs from the perspective of affected individuals and their caregivers and relatives. Nevertheless, to date, only a relatively marginal part of dementia research has focused on NPS. This study aimed to describe and discuss the state of the art concerning the identification and development of new pharmacological treatments for NPS in dementia. A review of 320 ongoing phase 1, 2, 3, and 4 protocols registered in the clinicaltrials.gov database was performed. All the trials enrolling patients with dementia were selected. Only studies adopting clinical measures of NPS frequency and/or severity as primary outcome were retained and analyzed. Overall, only a minority of ongoing phase 1, 2, 3 and 4 protocols on dementia (i.e., 9.0%) is primarily targeting NPS. Most of these studies are adopting a placebo-controlled parallel assignment design, testing oral compounds, and targeting specific NPS (mostly agitation and/or aggression). A total of 3,445 subjects with dementia will tentatively be recruited in these trials. The methodologies adopted in these studies, the characteristics of the tested interventions, the eligibility criteria, and the operational definitions of NPS are presented and discussed. The relevance of NPS is not yet matched by an adequate research effort. The current tendency at privileging disease-modifying approaches and other symptoms of dementia and the methodological complexity of studying NPS are still substantially contributing to the gap between research activities and clinical needs.

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