Structure and electrochemical performance of Y(III) and Al(III) codoped amorphous nickel hydroxide

Chang-jiu, Liu; Wu, Huayue; Li, Yanwei

doi:10.1016/j.jpcs.2009.02.014

Cited by 18 publications

(11 citation statements)

References 18 publications

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“…The relationship between the anodic peak current I p and the scan rate v is shown in Fig.6 (5). The linear relationship between I p and v 1/2 indicates that the electrode reaction is controlled by proton diffusion [12,17]. According to RandleeSevcik equation [16,19], the anodic peak current I p and the scan rate v of the electrode system controlled by diffusion process follows the following relationship at room temperature (25 C):…”

Section: Physical Properties Of the Prepared Nickel Hydroxidementioning

confidence: 99%

“…Recent studies have shown that the structural stability and electrochemical performance for multi-doped a-Ni(OH) 2 are better than that for mono-doped a-Ni(OH) 2 [16]. In order to improve properties of nickel hydroxide, numerous studies have been carried out by partial substitution of Ni ion by two elements ions, such as AleY [17], CoeZn [18], AleCu [19], AleCo [20]. The results demonstrate that reasonable molar ratio of doped elements ions can produce synergic effect of lattice distortion, which can improve electrochemical performance by enhancing the structural stability, proton diffusion coefficient and decreasing electron transfer resistance.…”

Section: Introductionmentioning

confidence: 99%

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The relationship between structural stability and electrochemical performance of multi-element doped alpha nickel hydroxide

Miao

Zhu

Huang

et al. 2015

Journal of Power Sources

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Section: Physical Properties Of the Prepared Nickel Hydroxidementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The relationship between structural stability and electrochemical performance of multi-element doped alpha nickel hydroxide

Miao

Zhu

Huang

et al. 2015

Journal of Power Sources

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“…Nowadays, nickel-metal hydride (Ni-MH) battery [1][2][3][4][5][6][7][8][9] is widely concerned owing to its long life, high safety, environment friendly, wide temperature field application, etc. Generally, the Ni-MH battery is composed of the β-Ni(OH) 2 cathode and the metal hydride anode.…”

Section: Introductionmentioning

confidence: 99%

Manganese coating α-Ni(OH)2 as high-performance cathode material for Ni-MH battery

Niu

Liang

Shen

et al. 2021

Ionics

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The α-Ni(OH) 2 coated with manganese (Mn) materials was synthesized by the chemical precipitation method, and the electrochemical properties were investigated. The results showed that the ingredient of the coating is a mixture of MnO 2 and Mn 2 O 3 , and the coating can inhibit the intercalated anions escape and stabilize the α-Ni(OH) 2 phase structure in KOH alkaline solution. The coated electrodes have higher discharge capacities and higher capacity retention rates than the uncoated α-Ni(OH) 2 electrode, the discharge capacity of Mn-coated electrodes is over 350 mAh g −1 , and the capacity retention rate exceeds 92%, separately. The reason may be that the Mn coatings can block or decelerate water molecule and the anion to escape from the interlayers, therefore prevent α phase structural collapse and maintain high discharge capacity during a long lifespan cycle. Therefore, the Mn coating α-Ni(OH) 2 is a promising candidate for high-power Ni-MH batteries.

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“…5 Researchers at home and abroad have done a lot of studies to prepare stabilised a-Ni(OH) 2 . To prepare stable a-nickel hydroxide, partial substitution of Ni ions in Ni(OH) 2 lattice with Al, 3,6 Co, 7,8 Mn, 9 Cu, 10 Zn, 11 Fe, 12 Y 13 or multielement 14,15 has been extensively employed.…”

Section: Introductionmentioning

confidence: 99%

Influence of Na₂CO₃on structure and electrochemical properties of nanometre Co substituted nickel hydroxide

Lin

Zhu

Zheng

et al. 2014

Materials Research Innovations

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Co substituted nanonickel hydroxide, which used NiCl 2 and Na 2 CO 3 as nickel source and buffer respectively, was synthesised by ultrasonic method. XRD, TEM, PSD and EDS were used to characterise the physical and electrochemical performance of the prepared samples respectively. The electrochemical performance affected by Co substituted ratio and buffer content were determined by cyclic voltammogram and discharge-charge test. The results demonstrated that the Co substituted nanonickel hydroxide was the mixed phase of a-and b-Ni(OH) 2 and the increasing Co content led to the larger proportion of a-nickel hydroxide. An increase in Na 2 CO 3 content was beneficial to form a-nickel hydroxide. The morphology of all samples was the needlelike and the length/diameter ratio decreased with increasing Na 2 CO 3 content. Composite electrodes were made by mixing 8 wt-% nickel hydroxide with commercial b-nickel hydroxide. The discharge capacities of electrodes first increased and then decreased with the change of Na 2 CO 3 content. When Ni 2z was 0?4 mol L 21 and Na 2 CO 3 was 0?5 g, the electrode had the maximum discharge capacity, which reached 306?9 mAh g 21 at 0?5 C discharge/charge rate.

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Structure and electrochemical performance of Y(III) and Al(III) codoped amorphous nickel hydroxide

Cited by 18 publications

References 18 publications

The relationship between structural stability and electrochemical performance of multi-element doped alpha nickel hydroxide

The relationship between structural stability and electrochemical performance of multi-element doped alpha nickel hydroxide

Manganese coating α-Ni(OH)2 as high-performance cathode material for Ni-MH battery

Influence of Na₂CO₃on structure and electrochemical properties of nanometre Co substituted nickel hydroxide

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Structure and electrochemical performance of Y(III) and Al(III) codoped amorphous nickel hydroxide

Cited by 18 publications

References 18 publications

The relationship between structural stability and electrochemical performance of multi-element doped alpha nickel hydroxide

The relationship between structural stability and electrochemical performance of multi-element doped alpha nickel hydroxide

Manganese coating α-Ni(OH)2 as high-performance cathode material for Ni-MH battery

Influence of Na2CO3on structure and electrochemical properties of nanometre Co substituted nickel hydroxide

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Influence of Na₂CO₃on structure and electrochemical properties of nanometre Co substituted nickel hydroxide