In-Situ Dynamic Characterization of Energy Storage and Conversion Systems

Zhu, Ying; Zhu, Wenxin; Tatarchuk, Bruce J.

doi:10.5772/52415

Cited by 3 publications

(3 citation statements)

References 75 publications

(141 reference statements)

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“…During the impedance measurement in this work, a desired voltage perturbation and an estimated impedance magnitude were set before the measurement. The initial current perturbation [30] was calculated by…”

Section: Battery Characterization By Ac Impedance Spectroscopymentioning

confidence: 99%

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Simulation of Ni-MH Batteries via an Equivalent Circuit Model for Energy Storage Applications

Zhu

Davis

et al. 2016

Advances in Physical Chemistry

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Impedance measurement was conducted at the entire cell level for studying of the Ni-MH rechargeable batteries. An improved equivalent circuit model considering diffusion process is proposed for simulation of battery impedance data at different charge input levels. The cell capacity decay was diagnosed by analyzing the ohmic resistance, activation resistance, and mass transfer resistance of the Ni-MH cells with degraded capacity. The capacity deterioration of this type, Ni-MH cell, is considered in relation to the change of activation resistance of the nickel positive electrodes. Based on the report and surface analysis obtained from the energy dispersive X-ray spectroscopy, the composition formula of metal-hydride electrodes can be closely documented as the AB5 type alloy and the “A” elements are recognized as lanthanum (La) and cerium (Ce). The capacity decay of the Ni-MH cell is potentially initiated due to starved electrolyte for the electrochemical reaction of active materials inside the Ni-MH battery, and the discharge product of Ni(OH)2 at low state-of-charge level is anticipated to have more impeding effects on electrode kinetic process for higher power output and efficient energy delivery.

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Section: Battery Characterization By Ac Impedance Spectroscopymentioning

confidence: 99%

“…The measured impedance value at this frequency point was then recorded as 1 . The current perturbation employed for each following frequency point was calculated by [29,30]…”

Section: Battery Characterization By Ac Impedance Spectroscopymentioning

confidence: 99%

Simulation of Ni-MH Batteries via an Equivalent Circuit Model for Energy Storage Applications

Zhu

Davis

et al. 2016

Advances in Physical Chemistry

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“…The most used electrode of SC is activated carbon (AC) in aqueous KOH solution, [5] but a limited capacitance (27.9–140 F g −1 ) restrict its further applications, [6] so developing a high‐performance electrode material is of great significance for improving the energy density of SC. Moreover, according to the charge energy storage mechanism, SC can be mainly divided into two categories: double layer capacitors [7,8] and Faraday pseudocapacitors (also known as pseudocapacitors), [9,10] and the specific capacitance of the latter can achieve 10 to 100 times that of the former under the same case [11] . From this perspective, developing pseudocapacitive materials with high capacity, rate, and stable cycle is significant to the research of high performance SCs.…”

Section: Introductionmentioning

confidence: 99%

Assembly and pseudocapacitive electrode materials application of octamolybdates based coordination polymers

Liu

Cai

et al. 2023

Zeitschrift anorg allge chemie

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A new octamolybdates based Cu‐organic polymer, [Cu2(mbix)2]2[Mo8O26] (mbix=1,3‐bis(imidazol‐1‐ylmethyl) benzene), abbreviated as Cu‐Mo8, was hydrothermally synthesized and characterized by routine method. Single‐crystal X‐ray diffraction analysis shows that {Mo8} as template and linker induce and promote the formation and connection of quadcore planetary loop (Cu4mbix4) to form the 2D planetary plane, then are stacked by van der Waals forces to stabilize the whole structure. Electrochemical results show that compound Cu‐Mo8 as electrode materials for supercapacitors exhibits the better supercapacitor performance of ca. 592.2 F g−1 at 1 A g−1, along with great cycling stability, which enriches POMs chemistry in the supercapacitor field.

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Energy management using fuzzy logic, on HEV

Gaoua

Caux

López

et al. 2013

2013 World Electric Vehicle Symposium and Exhibition (EVS27)

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On Hybrid Electrical Vehicles (HEV) the energy management becomes crucial, to increase the autonomy of the vehicle and decrease the costs. This paper presents a new approach, to manage the multiple electrical power sources, in front of variable user profiles and for many vehicle configurations. This new approach is based on the concept "adapt the sources type in front of the current profile on power bus". In this study the types of sources are "power" and "energy". The utilization rate of each source available is determined by the algorithm. The parameters used are kind of proprioceptive and exteroceptive the vehicle. This paper focuses on adaptive methods using fuzzy logic at two levels: at first level will consider the proprioceptive variables (attached to the sources and energy available instantaneously), at second level will consider the exteroceptive variables (attached to the mission and road status, to minimize the consumption criteria). The benefits of this technology have been evaluated on mission profiles associated at the electric vehicles used for mail delivery.

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In-Situ Dynamic Characterization of Energy Storage and Conversion Systems

Cited by 3 publications

References 75 publications

Simulation of Ni-MH Batteries via an Equivalent Circuit Model for Energy Storage Applications

Simulation of Ni-MH Batteries via an Equivalent Circuit Model for Energy Storage Applications

Assembly and pseudocapacitive electrode materials application of octamolybdates based coordination polymers

Energy management using fuzzy logic, on HEV

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