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Metal electrodes for next-generation rechargeable batteries
With regard to applications and high energy density, electrode materials with high specific and volumetric capacities and large redox potentials, such as metal electrodes (for example, Li metal ...
Mastering Proton Activities in Aqueous Batteries
6 · Hydrogen evolution is the most challenging side reaction (2H + + 2e − → H 2) and its electrode potential E HER limits the cathodic ESW according to the Nernst equation. When the negative electrode is operated below E HER, protons are consumed, H 2 …
Progress of hydrogen storage alloys for Ni-MH rechargeable …
As clean energy materials, hydrogen storage alloys have been widely investigated and applied as negative electrodes for nickel-metal hydride (Ni-MH) …
High-entropy alloys as anode materials of nickel
The HEAs successfully act as negative electrode of Ni-MH batteries with good charge/discharge cyclability, while there are optimum Ti/Zr ratios for the highest storage capacity and the fastest activity. ... The kinetics of electrochemical reactions and the amount of hydrogen absorption in the anode materials are two main parameters which …
HEC/PAM hydrogel electrolyte toward regulating the surface of …
2.1 Preparation of battery materials. HEC/PAM hydrogel was prepared by radical polymerization of acrylamide monomer (AM) and HEC. Firstly, 3 g AM was dissolved in 15 ml HEC aqueous solution of 5 wt% and stirred in an ice water bath for 30 min. 10 μL tetramethylethylenediamine (TMEDA) as the catalyst, 0.01 g N,N′- …
Rare Earth—Mg—Ni‐Based Hydrogen Storage Alloys as Negative Electrode ...
DOI: 10.1002/CHIN.201105211 Corpus ID: 197191501; Rare Earth—Mg—Ni‐Based Hydrogen Storage Alloys as Negative Electrode Materials for Ni/MH Batteries. @article{Liu2011RareEH, title={Rare Earth—Mg—Ni‐Based Hydrogen Storage Alloys as Negative Electrode Materials for Ni/MH Batteries.}, author={Yongfeng Liu and Yanhui …
Progress of hydrogen storage alloys for Ni-MH rechargeable …
As clean energy materials, hydrogen storage alloys have been widely investigated and applied as negative electrodes for nickel-metal hydride (Ni-MH) rechargeable batteries due to their high energy densities and environment-friendliness. This review details the progress made in the last few decades on hydrogen storage alloys, …
Nitrogen-doped redox graphene as a negative electrode additive for lead ...
1. Introduction. Lead-acid battery is currently one of the most successful rechargeable battery systems [1] is widely used to provide energy for engine starting, lighting, and ignition of automobiles, ships, and airplanes, and has become one of the most important energy sources [2].The main reasons for the widespread use of lead-acid …
Hybrid nickel-metal hydride/hydrogen battery
Conceptive picture of the "Hybrid Nickel-Metal Hydride/Hydrogen (Ni-MH/H 2) Battery" is shown in Fig. 2.This battery consists of positive electrode using Ni(OH) 2 as a active material and hybrid negative electrode, which is composed of hydrogen storage alloy with high dissociation pressure (M) and high-pressure H 2 as active …
Metal hydrides as negative electrode materials for Ni–MH …
Cheap, safer and simpler than their organic counterpart (Li ion batteries), the alkaline Ni– M H can be used to store electricity produced by renewable energies, …
High-performance nickel metal hydride battery anode with …
This research presents a significant advancement in hydrogen storage alloy coatings and offers valuable insights for designing electrodes in NiMH batteries. …
Zinc Hydroxystannate as High Cycle Performance Negative …
because they can reduce the volume of evolved hydrogen by increas-ing the over potential of hydrogen evolution, decrease self-discharge and improve the cycle performance of the battery.22,23 However, few investigations have been focused on ZnSn(OH) 6 as anode electrode material for Zn/Ni battery. Zinc hydroxystannate (ZnSn(OH) 6) is one
Metal electrodes for next-generation rechargeable batteries
Compared to conventional batteries that contain insertion anodes, next-generation rechargeable batteries with metal anodes can yield more favourable energy …
The role of electrocatalytic materials for developing post-lithium ...
The role of electrocatalytic materials for developing post- ...
Capacity Degradation Mechanisms in Nickel/Metal Hydride Batteries
The concentrated sulfuric acid is poured into the deteriorated nickel-hydrogen battery and maintained at a temperature of 60 ± 10 °C while an electric current is applied to charge the nickel-hydrogen battery. ... Takee, M. Advanced Ni-MH Batteries for Hybrid Electric Vehicles Using Super-Lattice Alloys as A Negative Electrode Materials. …
Rare earth–Mg–Ni-based hydrogen storage alloys as negative electrode ...
DOI: 10.1016/J.JALLCOM.2010.08.157 Corpus ID: 135599431; Rare earth–Mg–Ni-based hydrogen storage alloys as negative electrode materials for Ni/MH batteries @article{Liu2011RareEH, title={Rare earth–Mg–Ni-based hydrogen storage alloys as negative electrode materials for Ni/MH batteries}, author={Yongfeng Liu and Yanhui …
Design of Hydrogen Storage Alloys/Nanoporous Metals …
electrode materials—hydrogen storage alloys (HSAs) limits applications of Ni-MH batteries in high- power fields due to large polarization. Here we design a hybrid …
Electrochemical properties and hydrogen storage mechanism of …
Perovskite-type oxide LaFeO 3 powder was prepared using a stearic acid combustion method. Its phase structure, electrochemical properties and hydrogen storage mechanism as negative electrodes for nickel/metal hydride (Ni/MH) batteries have been investigated systematically. The results of X-ray diffraction (XRD) analysis …
Kinetic and thermodynamic studies of hydrogen storage alloys as ...
A large number of hydrogen storage alloys have been developed as negative electrode materials for Ni/MH batteries. Their performances differ greatly in …
Nickel-based batteries: materials and chemistry
An Ni-MH battery utilises hydrogen storage alloys as the negative electrode material. The commercialised Ni-MH batteries in the late 1980s utilised mischmetal-based AB 5 hydride-forming alloys as active material in the negative electrode. With ever-increasing energy demand, new intermetallic compounds have been …
The electrochemical characteristics of AB4-type rare
A Ni/MH battery is composed of a Ni(OH) 2 positive electrode, metal MH negative electrode and an alkaline electrolyte (KOH solution) (Fig. 1 (a)). The electrochemical performance of Ni/MH batteries strongly depends on the MH negative electrode materials which can reversibly storage hydrogen [5, 12].So far, various types …
Rare earth–Mg–Ni-based hydrogen storage alloys as negative electrode ...
The capacity, durability (cycle life) and dischargeability (kinetics) of Ni/MH batteries depend strongly on the intrinsic properties of the electrode materials, especially for hydrogen storage alloys used as negative …
Rare earth–Mg–Ni-based hydrogen storage alloys as negative …
R–Mg–Ni-based hydrogen storage alloys are a new group of negative electrode materials with high energy density for use in Ni/MH batteries. The …
Nickel Metal Hydride Battery
Nickel-metal hydride batteries are similar to the proven sealed nickel-cadmium battery technology except that a hydrogen-absorbing negative electrode is used instead of the cadmium-based electrode. This eliminates cadmium, a toxic material, while this substitution increases the battery''s electric capacity (measured in ampere-hours) for a given ...
High-entropy alloys as anode materials of nickel
The HEAs successfully act as negative electrode of Ni-MH batteries with good charge/discharge cyclability, while there are optimum Ti/Zr ratios for the highest …
Progress of hydrogen storage alloys for Ni-MH rechargeable …
In summary, as negative electrode materials for Ni-MH power batteries, hydrogen storage alloys must have high reversible hydrogen storage capacities, sufficiently high electrochemical reaction rates and high corrosion resistance in alkaline solution to ensure excellent electrochemical performance. 3. Main hydrogen storage alloys for Ni …
Using Aquatic Plant-Derived Biochars as Carbon Materials for the ...
When evaluated as negative electrode materials for lithium ion batteries (LIBs), the biochars exhibited a capacity of 150–400 mAh g −1 during the first cycle and 100–300 mAh g −1 by the 25th cycle. Among the biochars, those derived from aquatic plants showed the highest capacity, likely due to their composition containing a higher ...
Perovskite Materials in Batteries
For instance, the LaFeO 3 compound has been studied as negative electrode material for nickel–metal hydride (Ni/MH) batteries . ... In perovskite oxides employed as negative electrode materials in Ni–oxide batteries, hydrogen insertion is associated with the electrochemical capacity of the system. Hydrogen absorption is …
Kinetic and thermodynamic studies of hydrogen storage alloys as ...
This paper reviews the present performances of intermetallic compound families as materials for negative electrodes of rechargeable Ni/MH batteries. The performance of the metal-hydride electrode is determined by both the kinetics of the processes occurring at the metal/solution interface and the rate of hydrogen diffusion …
Anode vs Cathode: What''s the difference?
The positive electrode is the electrode with a higher potential than the negative electrode. During discharge, the positive electrode is a cathode, and the negative electrode is an anode. During charge, the positive electrode is an anode, and the negative electrode is a cathode. Oxidation and reduction reactions
Lithium-ion battery electrode properties of hydrogen boride
Recently, hydrogen boride (HB) with a pseudo-two-dimensional sheet structure was successfully synthesized, and it is theoretically predicted to have high potential as a negative electrode material for alkali metal ion batteries, making it a promising new candidate. This study represents the first experimenta
Metal hydrides as negative electrode materials for Ni–MH batteries
Zr-based AB 2 Laves phase alloys are promising materials for the negative electrodes of the metal hydride batteries as they show high hydrogen storage capacities >30 % superior as compared to the ...
Hybrid nickel-metal hydride/hydrogen battery
This battery consists of positive electrode using Ni(OH) 2 as a active material and hybrid negative electrode, which is composed of hydrogen storage alloy with high dissociation pressure (M) and high-pressure H 2 as active materials. The plateau dissociation pressure of the MH is above 0.1 MPa and the gravimetric hydrogen density …
Study of electrochemical hydrogen charge/discharge properties of …
The purpose of the present study is to explore the possibility of using Iron(III) phosphate (FePO 4) as a negative electrode material for hydrogen batteries. FePO 4 is an inexpensive, ... and ease of synthesis, FePO 4-based materials could be a promising alternative for the negative electrodes in hydrogen batteries.
Review: on rare-earth perovskite-type negative electrodes in …
In the negative electrode, adsorption/absorption of hydrogen is crucial for the operation of the cell. A good hydrogen storage electrode material must have the following properties [14, 15]: (1) catalyst for hydrogen atom, (2) corrosion resistance, (3) reversible hydrogen storage capacity, (4) good operation in a wide range of …
Pressure-induced generation of heterogeneous electrocatalytic …
1 · ZnH x surface synthesis and characterization. Polycrystalline Zinc (Zn) foil (≥99.99%, 1 centimeter × 1 centimeter) was used as the electrode and was electrolyzed …
Review on the roles of carbon materials in lead-carbon batteries
For solving the problem of irreversible sulfation of the negative electrode and improve the electrochemical performance of LAB, people have done a lot of research in recent years and one main way is related to the appearance of lead-carbon battery (LCB), which adds carbon material to the negative electrode of LAB, such as graphite, carbon …