High-rate dischargeability enhancement of Ni/MH rechargeable batteries by addition of nanoscale CoO to positive electrodes

Wu, Jian; Tu, Jiangping; Han, T.A.; Yang, Yefeng; Zhang, W.K.; Zhao, Xinbing

doi:10.1016/j.jpowsour.2005.06.005

Cited by 22 publications

(10 citation statements)

References 8 publications

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“…Moreover, the high power performance of Ni-MH batteries not only depends on the high-rate discharge current, but also depends on the working voltage. High mean discharge voltage means higher discharge potential and more energy that the batteries can store and release [4]. Fig.…”

Section: Batterymentioning

confidence: 99%

“…Although Ni-MH batteries are commercially available, further research is still required to improve their power performance for applications in electric vehicles and hydride vehicles [4]. It is also necessary to reduce the cost of Ni-MH batteries in order to further expand their application fields, such as a replacement for nickel-cadmium (Ni-Cd) batteries in power tools, because the latter are cheaper but have cadmium pollution.…”

Section: Introductionmentioning

confidence: 99%

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Regulation of the discharge reservoir of negative electrodes in Ni–MH batteries by using Ni(OH) (x= 2.10) and γ-CoOOH

Shangguan

Chang

Tang

et al. 2011

Journal of Power Sources

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a b s t r a c tIn this paper, a novel strategy to regulate the discharge reservoir of negative electrodes in Ni-MH batteries is introduced by using Ni(OH) x (x = 2.10) and ␥-CoOOH. The electrochemical measurements of these batteries demonstrate that the use of Ni(OH) x (x = 2.10) and ␥-CoOOH can not only successfully regulate the discharge reservoir of negative electrodes in Ni-MH batteries to an adequate quantity, but also effectively improve the electrochemical performance of the batteries. Compared with normal batteries, the in-house prepared batteries with a lower discharge reservoir exhibit an enhanced discharge capacity, improved high-rate discharge ability, higher discharge potential plateau and superior cycle stability. The effect of Ni(OH) x (x = 2.10) and ␥-CoOOH on the electrochemical performance of nickel electrode is also investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results suggest that the new method is simple and effective for cost reduction of Ni-MH batteries with improved electrochemical performance.

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Section: Batterymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Regulation of the discharge reservoir of negative electrodes in Ni–MH batteries by using Ni(OH) (x= 2.10) and γ-CoOOH

Shangguan

Chang

Tang

et al. 2011

Journal of Power Sources

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“…The capacity of the Ni(OH) 2 electrode was 3 times as large as that of the ZnO electrode. The preparation of the Ni(OH) 2 electrode was reported previously [14]. A solution of 4.5 M KOH, 1.6 M K 2 BO 3 , 0.9 M KF and 0.1 M LiOH, saturated with ZnO, was used as the electrolyte.…”

Section: Methodsmentioning

confidence: 99%

Preparation and electrochemical performance of nanosized Bi compounds-modified ZnO for Zn/Ni secondary cell

Yuan

Shen

et al. 2009

Electrochimica Acta

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“…CoO nanoparticles were prepared by modifying the synthesis method reported by Wu, J. et al 54 . Typically, 0.1 M Na 2 CO 3 and 0.1 M Co(CH 3 COO) 2 •4 H 2 O solutions were prepared, each in 300 mL DI water.…”

Section: Synthesis Of Coo Nanoparticlesmentioning

confidence: 99%

Synergistic Catalysis of Co(OH)2/CuO for the Degradation of Organic Pollutant Under Visible Light Irradiation

Akram

Guo

et al. 2020

Sci Rep

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the exploration of advanced water treatment technologies e.g. heterogeneous photocatalysis is the most promising way to address organic pollution issues. Semiconductors based bimetallic photocatalysis with wide bandgap, have displayed splendid degradation performance in the UV light region, but their extension to the visible light/near infra-red region is still a matter of great concern. cuo, co(oH) 2 , coo and co(oH) 2 /cuo nanocomposites were synthesized via simple co-precipitation method and further practiced for Rhodamine B (RhB) decomposition by introducing per-sulfate (pS) as a sacrificial agent. Results revealed that Co(OH) 2 /cuo catalyst had shown robust catalytic activity for RhB photodegradation (degradation time 8 min, k = 0.864 min −1) under light illumination, significantly less (12-60 times) than the other reported bimetallic catalysts. Catalyst also have verified excellent performance for a broader pH range (5-9) with excellent stability. Main reactive species responsible for the photocatalytic reaction were sulfate (So 4 •−) and superoxide (o 2 •) radicals, duly verified by ESR and by using radical scavengers. With outstanding recycling abilities, this is probably the fewer successful attempt for RhB decolorization and can be highly favorable for effluent treatment by using the synergic effect of absorption and photodegradation. Globally increased population resulting in escalating environmental pollution, particularly, water contamination is consistently grabbing attention of researchers to overcome the needs of clean and safe water sources, for many decades 1. Ever-increasing garbage and effluents of many industries especially the usage of synthetic dyes in textile, tannery, paint, and paper industries are continuous sources of contaminated water 2. Releasing these dyes into the water sources, affecting aquatic life, ecosystems and human beings, adversely 3. Thus, the exploration of new and effective ways to overwhelmed organic water pollution issues is always considered as challenging. Many biological, physical, chemical, electrical and electrochemical methodologies have been developed, so far, for the removal of organic matter 4. From these methodologies, advanced oxidation processes (AOPs) have been extensively employed because of their simple, efficient and feasible approach. Amongst AOPs, heterogeneous photocatalysis has remarkable potential for organic pollutant removal, also has eco-friendly behavior, good stability, efficient photocatalytic activity for various dyes and most advantageously their economical and simple synthesis 5. Many techniques including sol-gel 6 , co-precipitation 7 , soluble sacrificial salt template 8 , solvothermal 9 and microwave-assisted approach 10 have been extensively attempted for the synthesis of facile and economical metallic catalysts. Rhodamine B is a widely used colorant in dyeing, textiles and food sectors, although it's banned, but still practiced in food factories, and also a good water tracer fluorescent 11. The carcinogenicity of RhB causes serious...

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High-rate dischargeability enhancement of Ni/MH rechargeable batteries by addition of nanoscale CoO to positive electrodes

Cited by 22 publications

References 8 publications

Regulation of the discharge reservoir of negative electrodes in Ni–MH batteries by using Ni(OH) (x= 2.10) and γ-CoOOH

Regulation of the discharge reservoir of negative electrodes in Ni–MH batteries by using Ni(OH) (x= 2.10) and γ-CoOOH

Preparation and electrochemical performance of nanosized Bi compounds-modified ZnO for Zn/Ni secondary cell

Synergistic Catalysis of Co(OH)2/CuO for the Degradation of Organic Pollutant Under Visible Light Irradiation

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