An overview of the environmental, economic, and material developments of the solar and wind sources coupled with the energy storage systems

Balali, Farhad; Nouri, Nayereh; Omrani, Emad; Nasiri, Adel; Otieno, Wilkistar

doi:10.1002/er.3755

Cited by 73 publications

(40 citation statements)

References 93 publications

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“…Therefore, production of electrical energy is an important area of study for many researchers. Some of the most popular and environmentally friendly energy sources to produce electric energy are renewable energy sources such as solar energy and wind energy . Although these sources have great potential for sustainable energy supply, production of electricity in any time depends on its sources.…”

Section: Introductionmentioning

confidence: 99%

A two‐dimensional material for high capacity supercapacitors: S‐doped graphene

2019

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Summary In this work, sulfur‐doped graphene‐coated electrodes are prepared by cyclic voltammetry in different potential ranges and different cycles (from 10 to 50) for selective modification of electrodes by different functional groups. The prepared electrodes are characterized by spectroscopic, microscopic and electrochemical methods. In scanning electron microscopic analysis, formation of graphene layers and their porous structure have been determined. Electrochemical impedance spectroscopic and cyclic voltammetric analyses are also used in electrochemical characterization of the electrodes. Then, the prepared sulfur‐doped graphene‐coated electrodes by using cyclic voltammetry in one‐step and low cost are used as electrode materials of supercapacitor for the first time in the literature. Since the mesoporous structure of the electrodes prepared in lower potential ranges increases, specific capacitance of the electrodes increases from 74 to 1833 mF cm−2 with 10 mA cm−2 current density. This result shows that specific capacitances of prepared electrodes are higher than those of the electrodes prepared with metal‐doped in the literature.

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Section: Introductionmentioning

confidence: 99%

A two‐dimensional material for high capacity supercapacitors: S‐doped graphene

2019

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“…Furthermore, it can be seen from the results of density of state (DOS) that Co(C 6 H 5 CO 2 ) 2 (C 5 H 5 N) 2 has high stability. From the Figure 1B, Co-3d states show much stronger hybridization with N-2p states and O-2p states from −6 to 3 eV, and it can be also observed that N-2p states and O-2p states overlap in the vicinity of the Fermi level, which can also enhance the stability of Co(C 6 H 5 CO 2 ) 2 (C 5 H 5 N) 2 .…”

Section: Methodsmentioning

confidence: 88%

“…Therefore, we first determined the adsorption of O 2 by testing different adsorption sites and adsorption modes. There are following possible surface active adsorption sites for O 2 6) ). All possible adsorption sites of O 2 and ORR intermediates on Co(C 6 H 5 CO 2 ) 2 (C 5 H 5 N) 2 were examined, and the most stable adsorption configurations and the corresponding adsorption energies were depicted in Figure 2 and Table 2.…”

Section: Adsorption Of O 2 and Orr Intermediatesmentioning

confidence: 99%

Cobalt‐based coordination polymer as high activity electrocatalyst for oxygen reduction reaction: Catalysis by novel active site CoO ₄ N ₂

Chen

Lai

2019

Int J Energy Res

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Summary [{Co3(μ3‐OH)(BTB)2(BPE)2}{Co0.5N(C5H5)}] (Co‐CP) as a coordination polymer for catalyzing oxygen reduction reaction (ORR) has recently been reported to exhibit high ORR performance because of its novel structural characteristics. Nevertheless, the detailed mechanism remains far from enough. Herein, first‐principles study of the ORR process of Co(C6H5CO2)2(C5H5N)2 is carried out, which is the constructed model of monomeric unit for this compound. Most interestingly, the calculated results uncover that in the second proton transfer step, the active site contributes to the reaction is not only the Co atom, but also the O and N atoms which are directly bonded to the Co atom that construct a novel active site CoO4N2. Further analysis of the electronic structure demonstrates that the Co, O, and N atoms in the CoO4N2 local structure have participated the electron transfer during the entire ORR process. By analyzing the relative energy changes of whole reaction, it can find that the favorable ORR pathway on the Co(C6H5CO2)2(C5H5N)2 is the 4e− pathway, and the overpotential of ORR on Co(C6H5CO2)2(C5H5N)2 is calculated as 0.43 V, which is consistent with experimental observation and lower than that on the Pt(111). Furthermore, the results of first‐principles molecular dynamics simulations and density of states (DOS) show that Co(C6H5CO2)2(C5H5N)2 presents good stability. And it also possesses high anti‐poisoning ability to some impurity gases such as CO, NO, and NH3.

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“…1 However, renewable power generation, such as wind and PV power generation, will cause great disturbance to the power grid if connected to the grid directly, since it has the disadvantage of fluctuation and intermittence. 6,7 Pumped hydro storage (PHS) is a preferable storage device, with low cycle cost, and is considered the most mature technology. 4,5 Many storage devices have been applied in hybrid systems.…”

Section: Introductionmentioning

confidence: 99%

Implementation of repowering optimization for an existing photovoltaic‐pumped hydro storage hybrid system: A case study in Sichuan, China

Cao

et al. 2019

Int J Energy Res

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Summary For a remote area or an isolated island, where the grid has not extended, a standalone hybrid energy system can provide cheap and adequate power for local users. However, with the development of society, the load demand will increase and the original system cannot completely meet the load demand. This situation occurs in Xiaojin, Sichuan, China. The existing photovoltaic‐pumped hydro storage (PV‐PHS) hybrid system in this area as the original system cannot completely meet the load requirements at present. The term “repowering” aims to maximize the reliability of power supply and the utilization of the PV‐PHS hybrid energy system that differs from traditional planning optimization to build all components. The repowering strategy is to integrate wind turbines (WTs) and battery into the original system. For the repowering system, a power management strategy is proposed to determine the operating modes of the PHS and battery. Three objectives, which are minimizing percentage of the demand not supplied, levelized cost of energy, and curtailment rate of renewable energy, are considered in the optimization model. Simulation is conducted by single‐objective, biobjective, and triobjective particle swarm optimization (PSO) techniques. For the single‐objective optimization, the comparison of PSO and genetic algorithm (GA) is made. For the double‐objective optimization, multiobjective PSO (MOPSO) is compared with weighted sum approach (WSA), and fuzzy satisfying method is utilized to find the win‐win solution. The results reveal that the repowering strategy can help to achieve maximum reliability of power supply after load demand increases significantly, and the battery plays an important role in such a hybrid system.

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An overview of the environmental, economic, and material developments of the solar and wind sources coupled with the energy storage systems

Cited by 73 publications

References 93 publications

A two‐dimensional material for high capacity supercapacitors: S‐doped graphene

A two‐dimensional material for high capacity supercapacitors: S‐doped graphene

Cobalt‐based coordination polymer as high activity electrocatalyst for oxygen reduction reaction: Catalysis by novel active site CoO ₄ N ₂

Implementation of repowering optimization for an existing photovoltaic‐pumped hydro storage hybrid system: A case study in Sichuan, China

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An overview of the environmental, economic, and material developments of the solar and wind sources coupled with the energy storage systems

Cited by 73 publications

References 93 publications

A two‐dimensional material for high capacity supercapacitors: S‐doped graphene

A two‐dimensional material for high capacity supercapacitors: S‐doped graphene

Cobalt‐based coordination polymer as high activity electrocatalyst for oxygen reduction reaction: Catalysis by novel active site CoO 4 N 2

Implementation of repowering optimization for an existing photovoltaic‐pumped hydro storage hybrid system: A case study in Sichuan, China

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Cobalt‐based coordination polymer as high activity electrocatalyst for oxygen reduction reaction: Catalysis by novel active site CoO ₄ N ₂