Review on reliability of supercapacitors in energy storage applications

Liu, Shuai; Li, Wei; Wang, Huai

doi:10.1016/j.apenergy.2020.115436

Cited by 194 publications

(74 citation statements)

References 139 publications

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“…With an increase in social awareness, the pressure on the development of sustainable technologies has increased over recent years. Within this trend, annual growth in zero and low emission transportation with electric and hybrid vehicles is strongly visible [1,2]. One current research focus in electromobility is related to the optimisation of energy storage solutions in vehicles, which involves, for example, optimal coupling of energy-dense batteries with power-dense supercapacitors [1,3].…”

Section: Introductionmentioning

confidence: 99%

Tailoring of the pore structures of wood pyrolysis chars for potential use in energy storage applications

et al. 2021

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Char obtained from biomass pyrolysis is an eco-friendly porous carbon, which has potential use as a material for electrodes in supercapacitors. For that application, a high microporous specific surface area (SSA) is desired, as it relates to the accessible surface for an applied electrolyte. Currently, the incomplete understanding of the relation between porosity development and production parameters hinders the production of tailor-made, bio-based pyrochars for use as electrodes. Additionally, there is a problem with the low reliability in assessing textual properties for bio-based pyrochars by gas adsorption. To address the aforementioned problems, beech wood cylinders of two different lengths, with and without pre-treatment with citric acid were pyrolysed at temperatures of 300-900°C and analysed by gas adsorption. The pyrolyzed chars were characterised with adsorption with N 2 and CO 2 to assess the influence of production parameters on the textual properties. The new approach in processing the gas adsorption data used in this study demonstrated the required consistency in assessing the micro-and mesoporosity. The SSA of the chars rose monotonically in the investigated range of pyrolysis temperatures. The pre-treatment with citric acid led to an enhanced SSA, and the length of the cylinders correlated with a reduced SSA. With pyrolysis at 900°C, the micro-SSAs of samples with 10 mm increased by on average 717 ± 32 m 2 /g. The trends among the investigated parameters and the textual properties were rationalized and provide a sound basis for further studies of tailor-made bio-based pyrochars as electrode materials in supercapacitors.

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Section: Introductionmentioning

confidence: 99%

Tailoring of the pore structures of wood pyrolysis chars for potential use in energy storage applications

et al. 2021

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“…In contrast to other power sources, FCs have a higher energy density and efficiency. Besides, FCs are suitable for EV applications due to the modular construction 133 and the FC's lifespan is estimated to be more than 20 years 134 . The battery is also a common power source for FCEV hybridization as a portable/rechargeable energy storage device.…”

Section: Topologiesmentioning

confidence: 99%

Optimization and cutting‐edge design of fuel‐cell hybrid electric vehicles

Luo

et al. 2021

Int J Energy Res

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Summary The transportation sector consumes a large amount of fossil fuels consequently exacerbating the global environmental and energy crisis. Fuel‐cell hybrid electric vehicles (FCHEVs) are promising alternatives in the continuous transition to clean energy. This article summarizes the recent advances pertaining to the optimization and cutting‐edge design of fuel‐cell hybrid electric vehicles, especially the fuel cell + battery hybrid topology, and discusses current technological bottlenecks hindering the commercialization of FCHEVs. The development of HEVs, markets, environmental and economic benefits, components, topologies, energy management strategies, degradation mechanisms, and safety standards of FCHEVs are reviewed. Proton exchange membrane fuel cells constitute the mainstream and most mature fuel cell technology for automobile applications. Battery hybridization is currently favored among the available FCHEV topological designs to improve the dynamic response and recover the braking energy. Energy management strategies encompassing logic rule‐based simple methods, intelligent control methods, global optimization strategies, and local optimization strategies are described, and issues and challenges encountering FCHEVs are discussed. In addition to promoting the construction of hydrogen supply facilities, future efforts are expected to focus on solving problems such as the high cost, durability of fuel cells, cold start, lifetime of batteries, security and comfort, system optimization, energy management systems, integration, and diagnosis of faults. This review serves as a reference and guide for future technological development and commercialization of FCHEVs. Highlights Advances of the optimization and cutting‐edge design of FCHEVs are reviewed. Battery hybridization is currently favored among the available topological designs. Benefits, components, topologies, and energy management strategies are described. Markets, degradation mechanisms, and safety standards of FCHEVs are introduced. Technological bottlenecks hindering the commercialization of FCHEVs are discussed.

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“…Though the electro‐chemical behavior of the pseudo‐capacitance differs from that of pure electrostatic EDLC, it is not dissimilar to that of a battery because the Faradaic process happens on the surface of pseudo‐capacitive materials, whereas it happens in bulk for battery‐type materials. As a result, the cyclic voltammogram curve of the pseudo‐capacitive materials has a rectangular form, which is a characteristic capacitive property 82 . The two primary working principles discussed above may explain what happens on the EDLC‐type electrode and the PC‐type electrode, respectively.…”

Section: Aging and Estimation State Of Supercapacitorsmentioning

confidence: 99%

A review of supercapacitors modeling, SoH, and SoE estimation methods: Issues and challenges

Laadjal

Cardoso

2021

Int J Energy Res

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Summary Supercapacitors (SCs), or ultracapacitors, due to their attractive features, such as, high power density, long life cycle, etc., have received much attention from the transportation sector. SCs can be used as an additional energy storage system (ESS) in combination with lithium‐ion batteries to enhance the performance of electric vehicles (EVs) in dynamic states, including acceleration and regenerative braking modes of operation. Online accurate estimation of SCs' state of health (SoH) and state of energy (SoE) is essential for an efficient energy management and real‐time condition monitoring in EV applications. The accuracy of the estimation of the SoE and SoH is based on the model's efficiency, which ensures that in order to minimize the impact of aging, model parameters should be defined in real time. Nevertheless, because the SC model is obviously nonlinear and broad in scale, online identification of the parameters estimation is usually difficult. In this paper, a generalized SC model of high accuracy and good robustness is proposed. The classification of the estimation methodologies for SoH and SoE of SC will be very helpful in choosing the appropriate method for the development of reliable and secure ESS and an energy management strategy for EVs.

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Review on reliability of supercapacitors in energy storage applications

Cited by 194 publications

References 139 publications

Tailoring of the pore structures of wood pyrolysis chars for potential use in energy storage applications

Tailoring of the pore structures of wood pyrolysis chars for potential use in energy storage applications

Optimization and cutting‐edge design of fuel‐cell hybrid electric vehicles

A review of supercapacitors modeling, SoH, and SoE estimation methods: Issues and challenges

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