scholarly journals Comparative Calculation of the Fuel–Optimal Operating Strategy for Diesel Hybrid Railway Vehicles

2017 ◽  
Vol 27 (2) ◽  
pp. 323-336
Author(s):  
Maik Leska ◽  
Harald Aschemann ◽  
Michael Melzer ◽  
Michael Meinert
Keyword(s):  
Energy Storage ◽  
Lithium Ion ◽  
Simulation Models ◽  
High Energy ◽  
Hybrid Vehicles ◽  
Optimal Operating ◽  
Railway Vehicles ◽  
Operating Strategy ◽  
Operating Strategies ◽  
The One

Abstract In contrast to road-based traffic, the track as well as the corresponding duty cycle for railways are known beforehand, which represents a great advantage during the development of operating strategies for hybrid vehicles. Hence the benefits of hybrid vehicles regarding the fuel consumption can be exploited by means of an off-line optimisation. In this article, the fuel-optimal operating strategy is calculated for one specified track using two hybrid railway vehicles with different kinds of energy storage systems: on the one hand, a lithium-ion battery (high-energy storage) and, on the other, a double layer capacitor (high-power storage). For this purpose, control-oriented simulation models are developed for each architecture addressing the main effects contributing to the longitudinal dynamics of the power train. Based on these simulation models, the fuel-optimal operating strategy is calculated by two different approaches: Bellman’s dynamic programming, a wellknown approach in this field, and an innovative sensitivity-based optimisation.

scholarly journals Novel Lithium-Ion Capacitor Based on a NiO-rGO Composite

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3586
Author(s):  
Qi An ◽  
Xingru Zhao ◽  
Shuangfu Suo ◽  
Yuzhu Bai
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Power Density ◽  
High Power ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Lithium Ion Capacitor

Lithium-ion capacitors (LICs) have been widely explored for energy storage. Nevertheless, achieving good energy density, satisfactory power density, and stable cycle life is still challenging. For this study, we fabricated a novel LIC with a NiO-rGO composite as a negative material and commercial activated carbon (AC) as a positive material for energy storage. The NiO-rGO//AC system utilizes NiO nanoparticles uniformly distributed in rGO to achieve a high specific capacity (with a current density of 0.5 A g−1 and a charge capacity of 945.8 mA h g−1) and uses AC to provide a large specific surface area and adjustable pore structure, thereby achieving excellent electrochemical performance. In detail, the NiO-rGO//AC system (with a mass ratio of 1:3) can achieve a high energy density (98.15 W h kg−1), a high power density (10.94 kW kg−1), and a long cycle life (with 72.1% capacity retention after 10,000 cycles). This study outlines a new option for the manufacture of LIC devices that feature both high energy and high power densities.

scholarly journals Recycling Strategies for Ceramic All-Solid-State Batteries—Part I: Study on Possible Treatments in Contrast to Li-Ion Battery Recycling

Metals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1523
Author(s):  
Lilian Schwich ◽  
Michael Küpers ◽  
Martin Finsterbusch ◽  
Andrea Schreiber ◽  
Dina Fattakhova-Rohlfing ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Energy Density ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Future Research ◽  
Energy Storage Devices ◽  
Solid State Batteries ◽  
All Solid State Batteries

In the coming years, the demand for safe electrical energy storage devices with high energy density will increase drastically due to the electrification of the transportation sector and the need for stationary storage for renewable energies. Advanced battery concepts like all-solid-state batteries (ASBs) are considered one of the most promising candidates for future energy storage technologies. They offer several advantages over conventional Lithium-Ion Batteries (LIBs), especially with regard to stability, safety, and energy density. Hardly any recycling studies have been conducted, yet, but such examinations will play an important role when considering raw materials supply, sustainability of battery systems, CO2 footprint, and general strive towards a circular economy. Although different methods for recycling LIBs are already available, the transferability to ASBs is not straightforward due to differences in used materials and fabrication technologies, even if the chemistry does not change (e.g., Li-intercalation cathodes). Challenges in terms of the ceramic nature of the cell components and thus the necessity for specific recycling strategies are investigated here for the first time. As a major result, a recycling route based on inert shredding, a subsequent thermal treatment, and a sorting step is suggested, and transferring the extracted black mass to a dedicated hydrometallurgical recycling process is proposed. The hydrometallurgical approach is split into two scenarios differing in terms of solubility of the ASB-battery components. Hence, developing a full recycling concept is reached by this study, which will be experimentally examined in future research.

scholarly journals Enhanced Roles of Carbon Architectures in High-Performance Lithium-Ion Batteries

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Lu Wang ◽  
Junwei Han ◽  
Debin Kong ◽  
Ying Tao ◽  
Quan-Hong Yang
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
High Mass

Abstract Lithium-ion batteries (LIBs), which are high-energy-density and low-safety-risk secondary batteries, are underpinned to the rise in electrochemical energy storage devices that satisfy the urgent demands of the global energy storage market. With the aim of achieving high energy density and fast-charging performance, the exploitation of simple and low-cost approaches for the production of high capacity, high density, high mass loading, and kinetically ion-accessible electrodes that maximize charge storage and transport in LIBs, is a critical need. Toward the construction of high-performance electrodes, carbons are promisingly used in the enhanced roles of active materials, electrochemical reaction frameworks for high-capacity noncarbons, and lightweight current collectors. Here, we review recent advances in the carbon engineering of electrodes for excellent electrochemical performance and structural stability, which is enabled by assembled carbon architectures that guarantee sufficient charge delivery and volume fluctuation buffering inside the electrode during cycling. Some specific feasible assembly methods, synergism between structural design components of carbon assemblies, and electrochemical performance enhancement are highlighted. The precise design of carbon cages by the assembly of graphene units is potentially useful for the controlled preparation of high-capacity carbon-caged noncarbon anodes with volumetric capacities over 2100 mAh cm−3. Finally, insights are given on the prospects and challenges for designing carbon architectures for practical LIBs that simultaneously provide high energy densities (both gravimetric and volumetric) and high rate performance.

scholarly journals An Overview of Lithium-Ion Battery Cathode Materials

2011 ◽  
Vol 1363 ◽  
Author(s):  
Yixu Wang ◽  
Hsiao-Ying Shadow Huang
Keyword(s):  
Energy Storage ◽  
Lithium Ion Battery ◽  
Cathode Materials ◽  
Lithium Iron Phosphate ◽  
Lithium Ion ◽  
Iron Phosphate ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Environmental Benefits ◽  
Energy Storage Devices

ABSTRACTThe need for the development and deployment of reliable and efficient energy storage devices, such as lithium-ion rechargeable batteries, is becoming increasingly important due to the scarcity of petroleum. In this work, we provide an overview of commercially available cathode materials for Li-ion rechargeable batteries and focus on characteristics that give rise to optimal energy storage systems for future transportation modes. The study shows that the development of lithium-iron-phosphate (LiFePO4) batteries promises an alternative to conventional lithiumion batteries, with their potential for high energy capacity and power density, improved safety, and reduced cost. This work contributes to the fundamental knowledge of lithium-ion battery cathode materials and helps with the design of better rechargeable batteries, and thus leads to economic and environmental benefits.

Freestanding highly defect nitrogen-enriched carbon nanofibers for lithium ion battery thin-film anodes

2017 ◽  
Vol 5 (11) ◽  
pp. 5532-5540 ◽  
Author(s):  
Guoqiang Tan ◽  
Wurigumula Bao ◽  
Yifei Yuan ◽  
Zhun Liu ◽  
Reza Shahbazian-Yassar ◽  
...  
Keyword(s):  
Thin Film ◽  
Energy Storage ◽  
Lithium Ion Batteries ◽  
Carbon Nanofibers ◽  
Large Scale ◽  
Lithium Ion ◽  
High Energy ◽  
Storage Technologies ◽  
Power Densities ◽  
Cycling Life

To transform lithium ion batteries into large-scale energy storage technologies, high energy/power densities and long cycling life of carbon-based anodes must be achieved.

scholarly journals Flexible freestanding MoS2 based paper-like material for energy conversion and storage

2019 ◽  
Author(s):  
Florian Zoller ◽  
Jan Luxa ◽  
Thomas Bein ◽  
Dina Fattakhova-Rohlfing ◽  
Daniel Bousa ◽  
...  
Keyword(s):  
Composite Material ◽  
Energy Storage ◽  
Mechanical Strength ◽  
Current Density ◽  
Active Sites ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Onset Potential ◽  
High Flexibility

Construction of flexible electrochemical devices for energy storage and generation is of utmost importance in the modern society. In this article, we report the synthesis of flexible MoS2 based composite paper by high-energy shear force milling and simple vacuum filtration. This composite material combines high flexibility, mechanical strength and good chemical stability. Chronopotentiometric charge-discharge measurements were used to determine the capacitance of our paper material. Highest capacitance of 33 mF cm-2 was achieved at current density of 1 mA cm-2 showing potential application in supercapacitors. We further used the material as a cathode for hydrogen evolution reaction (HER) with an onset potential of ca. -0.2 V vs RHE. The onset potential was even lower (ca. -0.1 V vs RHE) after treatment with n-butyllithium suggesting the introduction of new active sites. Finally, a potential use in Lithium ion batteries (LIB) was examined. Our material can be used directly without any binder, additive carbon or copper current collector and delivers specific capacity of 740 mA h g-1 at a current density of 0.1 A g-1. After 40 cycles at this current density the material still reached a capacity retention of 91%. Our findings show that this composite material could find application in electrochemical energy storage and generation devices where high flexibility and mechanical strength are desired.

scholarly journals A review of the energy storage aspects of chemical elements for lithium-ion based batteries

2021 ◽  
Author(s):  
Tariq Bashir ◽  
Sara Adeeba Ismail ◽  
Yuheng Song ◽  
Rana Muhammad Irfan ◽  
Shiqi Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Materials ◽  
Chemical Elements ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Battery Systems

Energy storage devices such as batteries hold great importance for society, owing to their high energy density, environmental benignity and low cost. However, critical issues related to their performance and safety still need to be resolved. The periodic table of elements is pivotal to chemistry, physics, biology and engineering and represents a remarkable scientific breakthrough that sheds light on the fundamental laws of nature. Here, we provide an overview of the role of the most prominent elements, including s-block, p-block, transition and inner-transition metals, as electrode materials for lithium-ion battery systems regarding their perspective applications and fundamental properties. We also outline hybrid materials, such as MXenes, transition metal oxides, alloys and graphene oxide. Finally, the challenges and prospects of each element and their derivatives and hybrids for future battery systems are discussed, which may provide guidance towards green, low-cost, versatile and sustainable energy storage devices.

scholarly journals A review of composite solid-state electrolytes for lithium batteries: fundamentals, key materials and advanced structures

2020 ◽  
Vol 49 (23) ◽  
pp. 8790-8839
Author(s):  
Yun Zheng ◽  
Yuze Yao ◽  
Jiahua Ou ◽  
Matthew Li ◽  
Dan Luo ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Next Generation ◽  
Composite Solid

All-solid-state lithium ion batteries (ASSLBs) are considered next-generation devices for energy storage due to their advantages in safety and potentially high energy density.

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