“Powder electrodeposition” synthesis of NiO-Ni/CNTs composites with high performances of lithium storage battery

Yang, Guangjie; Han, Tao; Lü, Xingjie; Yi, Jianhong; Tan, Songlin; Fang, Dong

doi:10.1016/j.jallcom.2021.163005

Cited by 14 publications

(4 citation statements)

References 63 publications

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“…The first discharge and charge capacity of the Ni@NiO‐45 anode is about 1249.7 and 1004.6 mAh g −1 , respectively, with a capacity loss of 19.6%. In this situation, the first discharge capacity is higher than the theoretical capacity of NiO, which can be considered as the contribution of the created SEI layer 72,73 . As the number of cycles increases, the profiles shift to left gradually, suggesting the apparent capacity decrease in initial stage of cycling.…”

Section: Resultsmentioning

confidence: 95%

“…In this situation, the first discharge capacity is higher than the theoretical capacity of NiO, which can be considered as the contribution of the created SEI layer. 72,73 As the number of cycles increases, the profiles shift to left gradually, suggesting the apparent capacity decrease in initial stage of cycling. In addition, the 100th discharge/charge curves lie in the right of the 50th and even the 10th, indicating a capacity increase occurs at the cycle anaphasis.…”

Section: Resultsmentioning

confidence: 99%

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Eutectic‐derived bimodal porous Ni@ NiO nanowire networks for high‐performance Li‐ion battery anodes

Luo

Wang

Chen

et al. 2022

Intl J of Energy Research

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Summary Severe mechanical degradations and sluggish ion/electron migration are challenges for developing high‐performance NiO‐based anodes. Herein, by accelerating the solidification process of eutectic precursors, bimodal porous Ni@NiO nanowire networks containing refined one‐dimensional nanowire skeleton, abundant porous structure and large number of surface oxygen defects are obtained. The well‐designed porous networks can effectively adapt to the volumetric variation of electrode during cycling. In addition, the density functional theory computation confirms that oxygen vacancies play an important role in providing superior Li capture ability, enhancing the electrical conductivity and surface reactivity. Benefiting from the above advantages, the Ni@NiO‐45 anode presents impressive cycling stability, delivering a reversible capacity of 697.9 mAh g−1 after 100 cycles at a current density of 100 mA g−1. The proposed structural regulating strategy in this study is anticipated to promote the exploitation of high‐performance conversion anodes and the application of dealloying technology in extensive fields.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Eutectic‐derived bimodal porous Ni@ NiO nanowire networks for high‐performance Li‐ion battery anodes

Luo

Wang

Chen

et al. 2022

Intl J of Energy Research

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“…Due to the low reduction potential of Ni 2+ (

{Ni}^{2+} {+ 2e}^{‐} = Ni

−0.25 V vs SHE), the Ni 2+ ions are quickly converted to Ni by negative charges and deposited on the TiO 2 NTs when the discharged TiO 2 NTs are added to the NiCl 2 solution. [ 26 ] After calcination in H 2 /N 2 , the Ni/TiO 2 NTs display the diffraction peaks of Ni metal (PDF#45‐1027). After calcination in air, NiTiO 3 (PDF#76‐0334) crystal phases are found in the NiTiO 3 /TiO 2 NTs without other impurities, like NiO.…”

Section: Resultsmentioning

confidence: 99%

Discharged Titanium Oxide Nanotube Arrays Coated with Ni as a High‐Performance Lithium Battery Electrode Material

et al. 2022

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Transition metal oxides are in high demand as electrode materials for alkali metal‐ion batteries due to high theoretical capacity. However, low electron transfer kinetics and slow ion migration lead to poor cycle stability and rate performance of the transition metal oxide electrode. Herein, TiO2 nanotube arrays coated with Ni (Ni/TiO2NTs) are fabricated by using predischarge‐electrodeposition method and subsequent calcination under H2/N2. In the Ni/TiO2NTs composite, TiO2NTs and Ni nanoparticles play the role of framework and coating layer, respectively. The as‐prepared Ni/TiO2NTs composites have a high specific surface area and a unique tubular structure, which facilitates the quick penetration of the electrolyte into the tubes and reduces the lithium ions’ diffusion distance. The incorporation of Ti3+ and metallic nickel in the hydrogenated TiO2NTs also increases conductivity. Besides, the spin‐polarized surface capacitance of Ni0 nanoparticles causes the magnetic changes that generate an extra lithium‐ion storage capacity. The Ni/TiO2NTs composite electrode maintains a high capacity of 507 mA h g−1 after 100 cycles at 0.2 A g−1. Here, the predischarge‐electrodeposition provides a new route for the preparation of composite materials.

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“…47-1049), respectively. 19 The (1 1 1) and (2 0 0) crystal planes of Ni in a face-centered cubic phase are associated with the diffraction angle of the first order at 44.5° and 51.8° (ICDD No. 04-0850) as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Highly efficient Ni–NiO/carbon nanotubes catalysts for the selective transfer hydrogenation of 5-hydroxymethylfurfural to 2,5-bis(hydroxymethyl)furan

et al. 2022

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“Powder electrodeposition” synthesis of NiO-Ni/CNTs composites with high performances of lithium storage battery

Cited by 14 publications

References 63 publications

Eutectic‐derived bimodal porous Ni@ NiO nanowire networks for high‐performance Li‐ion battery anodes

Eutectic‐derived bimodal porous Ni@ NiO nanowire networks for high‐performance Li‐ion battery anodes

Discharged Titanium Oxide Nanotube Arrays Coated with Ni as a High‐Performance Lithium Battery Electrode Material

Highly efficient Ni–NiO/carbon nanotubes catalysts for the selective transfer hydrogenation of 5-hydroxymethylfurfural to 2,5-bis(hydroxymethyl)furan

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