Rechargeable aqueous zinc-bromine battery: overview and future perspective

2021 ◽  
Author(s):  
Yanbin Yin ◽  
Zhizhang Yuan ◽  
Xianfeng Li
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Large Scale ◽  
Low Cost ◽  
Future Perspective ◽  
Distributed Energy ◽  
Distributed Energy Storage

Zinc-bromine batteries (ZBBs) receive wide attention in distributed energy storage because of the advantages of high theoretical energy density and low cost. However, their large-scale application is still confronted with...

Concept and Application of Distributed Compressed Air Energy Storage Systems Integrated in Utility Networks

2013 ◽  
Author(s):  
Miroslav P. Petrov ◽  
Reza Arghandeh ◽  
Robert Broadwater
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Large Scale ◽  
Renewable Energy Sources ◽  
Compressed Air ◽  
Small Scale ◽  
Compressed Air Energy Storage ◽  
Distributed Energy ◽  
Local Networks ◽  
Distributed Energy Storage

Distributed energy storage has been recognized as a valuable and often indispensable complement to small-scale power generation based on renewable energy sources. Small-scale energy storage positioned at the demand side would open the possibility for enhanced predictability of power output and easier integration of small-scale intermittent generators into functioning electricity markets, as well as offering inherent peak shaving abilities for mitigating contingencies and blackouts, for reducing transmission losses in local networks, profit optimization and generally allowing tighter utility control on renewable energy generation. Distributed energy storage at affordable costs and of low environmental footprint is a necessary prerequisite for the wider deployment of renewable energy and its deeper penetration into local networks. Thermodynamic energy storage in the form of compressed air is an alternative to electrochemical energy storage in batteries and has been evaluated in various studies and tested commercially on a large scale. Distributed compressed air energy storage (DCAES) systems in combination with renewable energy generators installed at residential homes, public or commercial buildings are a viable alternative to large-scale energy storage, moreover promising lower specific investment than batteries if a mass-market is established. Flexible control methods can be applied to DCAES units, resulting in a complex system running either independently for home power supply, or as a unified and centrally controlled utility-scale energy storage entity. This study aims at conceptualizing the plausible distributed compressed-air energy storage units, examining the feasibility for their practical implementation and analyzing their behavior, as well as devising the possible control strategies for optimal utilization of grid-integrated renewable energy sources at small scales. Results show that overall energy storage efficiency of around 70% can be achieved with comparatively simple solutions, offering less technical challenges and lower specific costs than comparable electrical battery systems. Furthermore, smart load management for improving the dispatchability can bring additional benefits by profit optimization and decrease the payback time substantially.

Modeling of a Low Cost Thermal Energy Storage System to Enhance Generation From Small Hydropower Systems

2017 ◽  
Author(s):  
Peggy P. Ip ◽  
Sammy Houssainy ◽  
H. Pirouz Kavehpour
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Storage Systems ◽  
Low Cost ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Costs ◽  
Distributed Energy ◽  
Small Hydropower ◽  
Distributed Energy Storage

Undeveloped small hydropower generation sites are abundant throughout the water conveyance infrastructure and natural rivers in the United States. Due to its small scale, micro-hydro development requires substantial upfront capital costs, maintenance and operation costs for customized engineering and construction. The significant investments required for developing small hydropower are inhibiting for utilities, residential and commercial users to adopt. An inexpensive energy storage system and a well-designed power controls system can be integrated with small hydropower sites to increase its cost-effectiveness and reliability. This paper introduces the concept of storing low-power generated from small hydro turbines during long off-peak periods and dispatching at high-power as grid-quality electricity during peak periods. The use of an ultra-low cost thermal energy storage (ULCTES) system is examined. Boosting the power output for small hydro generation allows commercial users to avoid significant demand charges during operation, making small hydro an attractive cost saving strategy and therefore breaking down the cost barrier. The ULCTES operates much like a bulk power production unit and a peaker plant, in which it is capable of dispatching constant power over a long period during peak periods when conventional sources are unavailable. Improvements in system reliability and economic value are evaluated using microgrid optimization software HOMER Energy. In particular, two cases are studied with variations in types of end users and energy management goals. Energy costs savings, demand charges savings and renewable energy penetration are determined. Distributed energy storage systems are shown to reduce energy costs and increase the renewable energy penetration for commercial users. With ULCTES, microgrids have the flexibility to manage fluctuating renewable energy generation as well as respond to rapidly changing loads on a daily basis. A larger hydroelectricity system is shown to be more feasible with distributed energy storage systems for isolated users without any connection to the grid.

scholarly journals Orderly grid-connected cooperative scheduling control strategy based on distributed energy storage for electric vehicles

2021 ◽  
Vol 2121 (1) ◽  
pp. 012030
Author(s):  
Xiaomei Li ◽  
Rong Cao ◽  
Wenbo Hao ◽  
Mingyu Xu ◽  
Heng Hu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Objective Function ◽  
Electric Vehicles ◽  
Control Strategy ◽  
Large Scale ◽  
Distributed Energy ◽  
Peak Shaving ◽  
Grid Connection ◽  
Distributed Energy Storage ◽  
Cooperative Scheduling

Abstract Aiming at the problem that large-scale disorderly grid connection of electric vehicles negatively affects grid operation and causes a large amount of abandoned wind and abandoned light, an orderly grid connection cooperative scheduling control strategy based on distributed energy storage of electric vehicles is proposed. The strategy takes the charging and discharging price as the lever to guide the users to charge and discharge in an orderly manner, takes the optimal economics on the user side and the optimal cost of power generation on the grid side as the objective function, and uses linear weighting normalization to convert the multi-objective function into a single objective function for simulation solution. The simulation results show that the effect of peak shaving and valley filling can be achieved on the basis of satisfying users’ demand, and renewable energy can be effectively consumed.

scholarly journals Universal strategy towards high–energy aqueous multivalent ion batteries

2021 ◽  
Author(s):  
Xiao Tang ◽  
Dong Zhou ◽  
Bao Zhang ◽  
Shijian Wang ◽  
Peng Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Metal Oxide ◽  
Large Scale ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Aqueous Battery ◽  
Oxide Cathodes ◽  
Multivalent Metal

Abstract Non–aqueous rechargeable multivalent metal (Ca, Mg, Al, etc.) batteries are promising for large–scale energy storage due to their low cost. However, their practical applications face formidable challenges owing to low electrochemical reversibility and dendrite growth of multivalent metal anodes, sluggish kinetics of multivalent ion in metal oxide cathodes, and poor electrode compatibility of flammable organic electrolytes. To overcome these intrinsic hurdles, we develop aqueous multivalent ion batteries to replace the prevailing non–aqueous multivalent metal batteries by using wide–window super–concentrated aqueous gel electrolytes, the versatile high–capacity sulfur anodes, and high–voltage metal oxide cathodes. This rationally designed aqueous battery chemistry enables the long–lasting multivalent ion batteries featured with increased high energy density, reversibility and safety. As a demonstration model, a calcium ion−sulfur||metal oxide full cell exhibited a high energy density of 110 Wh kg–1 with outstanding cycling stability. Molecular dynamics modelling and experimental investigations revealed that the side reactions could be significantly restrained through the suppressed water activity and formation of protective inorganic solid electrolyte interphase in the aqueous gel electrolyte. The unique redox chemistry has also been successfully extended to aqueous magnesium ion and aluminum ion−sulfur||metal oxide batteries. This work will boost aqueous multivalent ion batteries for low−cost large–scale energy storage.

scholarly journals Location and Capacity Optimization of Distributed Energy Storage System in Peak-Shaving

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 513 ◽  
Author(s):  
Ruiyang Jin ◽  
Jie Song ◽  
Jie Liu ◽  
Wei Li ◽  
Chao Lu
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Storage System ◽  
Optimization Method ◽  
Energy Storage System ◽  
Capacity Allocation ◽  
Distributed Energy ◽  
Capacity Optimization ◽  
Location Selection ◽  
Distributed Energy Storage

The peak-valley characteristic of electrical load brings high cost in power supply coming from the adjustment of generation to maintain the balance between production and demand. Distributed energy storage system (DESS) technology can deal with the challenge very well. However, the number of devices for DESS is much larger than central energy storage system (CESS), which brings challenges for solving the problem of location selection and capacity allocation with large scale. We formulate the charging/discharging model of DESS and economic analysis. Then, we propose a simulation optimization method to determine the locations to equip with DESSs and the storage capacity of each location. The greedy algorithm with Monte Carlo simulation is applied to solve the location and capacity optimization problem of DESS over a large scale. Compared with the global optimal genetic algorithm, the case study conducted on the load data of a district in Beijing validates the efficiency and superiority of our method.

High energy density aqueous zinc–benzoquinone batteries enabled by carbon cloth with multiple anchoring effects

2021 ◽  
Author(s):  
Zhiqiang Luo ◽  
Silin Zheng ◽  
Shuo Zhao ◽  
Xin Jiao ◽  
Zongshuai Gong ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Porous Carbon ◽  
Large Scale ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Cloth ◽  
Anchoring Effects ◽  
High Theoretical Capacity ◽  
Energy Storage Applications

Benzoquinone with high theoretical capacity is anchored on N-plasma engraved porous carbon as a desirable cathode for rechargeable aqueous Zn-ion batteries. Such batteries display tremendous potential in large-scale energy storage applications.

Fiber-reinforced Monolithic Supercapacitor with Interdigitated Interfaces

2021 ◽  
Author(s):  
Fanshu Yuan ◽  
Devashish Salpekar ◽  
Abhijit Baburaj ◽  
Anand B. Puthirath ◽  
Sakib Hassan ◽  
...  
Keyword(s):  
Energy Storage ◽  
Emerging Technologies ◽  
Fiber Reinforced ◽  
Distributed Energy ◽  
Power Devices ◽  
Structural Power ◽  
Distributed Energy Storage ◽  
Essential Components ◽  
Storage Networks

Supercapacitors will serve as essential components of distributed energy storage networks and structural power devices in many emerging technologies. Current supercapacitors are engineered, however, using ‘sandwich’ architecture that undermines their...

An Exponential Droop Control Strategy for Distributed Energy Storage Systems Integrated with Photovoltaics

2020 ◽  
pp. 1-1
Author(s):  
Angelos I. Nousdilis ◽  
Georgios C. Kryonidis ◽  
Eleftherios O. Kontis ◽  
Georgios Christos Christoforidis ◽  
Grigoris K. Papagiannis
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Storage Systems ◽  
Droop Control ◽  
Distributed Energy ◽  
Energy Storage Systems ◽  
Distributed Energy Storage
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