Effects of Al content on the electrochemical properties of La0.78Ce0.22Ni3.95-xCo0.65Mn0.3Si0.1Alx alloys at 20–80 °C

Zhou, Wanhai; Zhu, Ding; Wang, Qiannan; Wu, Chien-Huei; Ma, Zhewen; Wu, Yucheng; Chen, Yungui

doi:10.1016/j.ijhydene.2015.06.063

Cited by 23 publications

(1 citation statement)

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“…Many studies have been performed to optimize battery composition and find additives to improve battery performance over a wide temperature range and provide longtime durability. [4][5][6][7][8][9] Nickel hydroxide is used as the positive electrode material but features poor electrical conductivity after its reaction to form NiOOH in the charging process. Hence, conductive materials, [10][11][12][13][14] or Co compounds [15][16][17][18][19][20][21] are usually added to the positive electrodes and methods for introducing these additives and their influence on battery performance have been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

Degradation Factors and Durability of Large Scale Ni-metal Hydride Batteries

et al. 2018

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The lifetime of a nickel-metal hydride battery power system (BPS) used in railway systems is investigated. Frequent acceleration and deceleration are performed in normal railway operation, so the narrow range of SOC of the corresponding BPS is discussed. Since the lifetime of the battery used in that BPS should be estimated in accordance with the operation pattern, the operation pattern was analyzed by Fourier transform, and battery lifetime is evaluated in the frequent discharge/charge with a current change every 6 seconds within a 3% depth of discharge (DOD) as the main pattern and the float charging at a constant voltage. Major factors of the battery lifetime are operation voltage and the internal cell temperature caused by an internal resistance. The lifetime of the battery do not depend on the operation pattern such as frequent discharge/charge and float charging. Furthermore, it was almost the same as the lifetime at rest potential in the open circuit state. Applying electrochemical reaction kinetics equations to this system, calculation results indicate a good correlation with the experimental data.

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Section: Introductionmentioning

confidence: 99%

Degradation Factors and Durability of Large Scale Ni-metal Hydride Batteries

et al. 2018

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Ni/Cd and Ni‐MH – The Transition to “Charge Carrier”‐Based Batteries

Wang

Zhu

2020

Encyclopedia of Electrochemistry

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Ni‐MH battery is developed and commercialized with lithium‐ion battery almost at the same time, to replace the environmentally unfriendly Ni/Cd battery and meet the increasing energy density requirements of consumer electronic devices. The success of Ni‐MH battery in consumer and industrial markets is mainly attributed to its specific negative electrode materials, namely a large variety of intermetallic compounds with reversible hydrogen absorption and desorption during charging and discharging. A unique hydrogen shuttle mechanism through the aqueous alkaline electrolyte between the layered Ni(OH) 2 cathode and interstitial metal hydride anode could be thus achieved. Hydrogen as the charge carrier in Ni‐MH battery is like the lithium ion in the lithium‐ion battery. The simple and robust structure of Ni‐MH battery brings high safety under various conditions, making Ni‐MH battery very competitive in applications demanding safety priority, such as hybrid electric vehicles. The brief history, basic structure, research, and development of electrode materials of Ni‐MH battery are introduced, with the emphasis on the hydrogen storage electrode alloys. Future development of Ni‐MH battery is expected to be focused on the automotive and stationary energy storage applications by greater innovation in the hydrogen storage alloy anodes with ultra‐high capacity and overall electrochemical properties.

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