Reviews on Chinese Patents Regarding the Nickel/Metal Hydride Battery

Kim, Young; Cai, Xiaojuan; Chang, Shiuan

doi:10.3390/batteries3030024

Cited by 10 publications

(12 citation statements)

References 8 publications

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“…Therefore, the 6.44 M KOH + 0.33 M Cs 2 CO 3 electrolyte has a decreased resistance and increased conductivity. While a low Cs 2 CO 3 concentration promotes proton transfer in the system and improves both the discharge capacity and cycling performance, a higher Cs 2 CO 3 concentration increases the solution resistivity due to the increased concentrations of larger cations (Cs + ) and anions (CO 3 2− ) in the electrolyte, according to Stokes' Law [12]. Cs 2 CO 3 also changes the alloy surface structure during cycling.…”

Section: Discussionmentioning

confidence: 99%

“…For alloy P32, Cs 2 CO 3 does not increase the initial discharge capacity; however, it greatly decreases the decay, as shown in Figure 1. In comparison to alloy P32, both alloys P31 and P37 contain Al, raising the possibility that the presence of Al results in the alloy surface reacting with the CO 3 2− ions in the electrolyte and forming Al 2 (CO 3 ) 3 . Al 2 (CO 3 ) 3 , which is known to be unstable in water [59].…”

Section: Electrochemical Performances For Electrolytes With Cs 2 Co 3mentioning

confidence: 99%

“…Since the commercialization of nickel/metal hydride (Ni/MH) batteries in 1980s, they have been widely used as energy storage devices in hybrid electric vehicles, vacuum cleaners, electric toys, power tools, and cordless phones, to name a few uses [1][2][3]. Ni/MH batteries have many superior properties over rival battery technologies, such as high specific power, long cycle life, robust abuse tolerance, and a wide temperature operation range [2].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Cs2CO3 Additive in KOH Electrolyte Used in Ni/MH Batteries

Yan

Nei²,

et al. 2017

Batteries

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Abstract:The effects of Cs 2 CO 3 addition in a KOH-based electrolyte were investigated for applications in nickel/metal hydride batteries. Both MgNi-based and Laves phase-related body-centered cubic solid solution metal hydride alloys were tested as the anode active materials, and sintered β-Ni(OH) 2 was used as the cathode active material. Certain amounts of Cs 2 CO 3 additive in the KOH-based electrolyte improved the electrochemical performances compared with a conventional pure KOH electrolyte. For example, with Laves phase-related body-centered cubic alloys, the addition of Cs 2 CO 3 to the electrolyte improved cycle stability (for all three alloys) and discharge capacity (for the Al-containing alloys); moreover, in the 0.33 M Cs 2 CO 3 + 6.44 M KOH electrolyte, the discharge capacity of Mg 52 Ni 39 Co 3 Mn 6 increased to 132%, degradation decreased to 87%, and high-rate dischargeability stayed the same compared with the conventional 6.77 M KOH electrolyte. The effects of Cs 2 CO 3 on the physical and chemical properties of Mg 52 Ni 39 Co 3 Mn 6 were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, inductively coupled plasma, and electrochemical impedance spectroscopy. The results from these analyses concluded that Cs 2 CO 3 addition changed both the alloy surface and bulk composition. A fluffy layer containing carbon was found covering the metal particle surface after cycling in the Cs 2 CO 3 -containing electrolyte, and was considered to be the main cause of the reduction in capacity degradation during cycling. Also, the Cs 2 CO 3 additive promoted the formations of the C-O and C=O bonds on the alloy surface. The C-O and C=O bonds were believed to be active sites for proton transfer during the electrochemical process, with the C-O bond being the more effective of the two. Both bonds contributed to a higher surface catalytic ability. The addition of 0.33 M Cs 2 CO 3 was deemed optimal in this study.

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Section: Discussionmentioning

confidence: 99%

Section: Electrochemical Performances For Electrolytes With Cs 2 Co 3mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Cs2CO3 Additive in KOH Electrolyte Used in Ni/MH Batteries

Yan

Nei²,

et al. 2017

Batteries

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“…(Chang, Young, & Lien, 2017;Trapanese, Franzitta, & Viola, 2012;K.-H. Young, Cai, & Chang, 2017;K. Young, Ng, & Bendersky, 2016) China es el país que más baterías de Ni/MH producen por tipo consumidor (> 70%) para el mundo desde el cambio de siglo, también produce baterías para aplicaciones automotrices HEV, PHEV y EV; se llegará a una producción de 3800 (Unidades por capacidad) millones de Ah (Ouchi, Young, & Moghe, 2016), para los vehículos HEV que son del tipo de alta potencia para acumulación de energía y para transporte pesado del tipo de muy alta potencia para llegar a estos niveles.…”

Section: Baterías De Níquel Metal Hidrurounclassified

“…Young, Ng, & Bendersky, 2016) China es el país que más baterías de Ni/MH producen por tipo consumidor (> 70%) para el mundo desde el cambio de siglo, también produce baterías para aplicaciones automotrices HEV, PHEV y EV; se llegará a una producción de 3800 (Unidades por capacidad) millones de Ah (Ouchi, Young, & Moghe, 2016), para los vehículos HEV que son del tipo de alta potencia para acumulación de energía y para transporte pesado del tipo de muy alta potencia para llegar a estos niveles. (Young, Cai, & Chang, 2017) En el diseño y construcción de la batería, se ha investigado en los materiales para el cátodo, ánodo, electrólito; por ejemplo, la compañía Deutsche Automobilgesellschaft GmbH, ha implementado una celda prismática con el electrodo negativo cubierto por hilos de politetrafluoroetileno (PTFE) y un diseño bipolar de apilado de electrodos. .…”

Section: Baterías De Níquel Metal Hidrurounclassified

Revisión del estado del arte de baterías para aplicaciones automotrices

Sánchez¹,

Lucero²,

Guzmán³

et al. 2018

Enfoque UTE

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La presente investigación tiene como objetivo determinar el avance que han tenido las tecnologías de baterías en el campo automotriz, debido a la implementación de sistemas de electrificación en el tren de potencia, usado en los vehículos híbridos y eléctricos. Las tecnologías utilizadas se clasificaron por la química utilizada en su construcción, siendo las de plomo ácido, níquel metal hidruro y ion litio las escogidas. Posteriormente se investigó sobre las características más importantes de cada una de ellas, entre las que se encuentran como la capacidad, el voltaje nominal de sus celdas, entre otras. Las baterías de plomo por su costo seguirán ocupando una cuota de mercado considerable, pero por sus prestaciones no pueden utilizarse como baterías de propulsión. Las baterías de níquel metal hidruro soportan un mayor estrés de trabajo, poseen mayor densidad de energía por lo que se usan principalmente en vehículos híbridos. Por la demanda de energía y potencia que necesitan los vehículos eléctricos necesitan de las baterías con mayor densidad de energía, que son las de ion litio.

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