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1. Enhanced lithium storage capability enabled by metal nickel dotted NiO–graphene composites

Author:
Chen, Jin; Wang, Zhao; Mu, Jiechen; Ai, Bing; Zhang, Tiezhu; Ge, Wenqing; Zhang, Lipeng
Source:
Journal of materials science 2019 v.54 no.2 pp. 1475-1487
ISSN:
0022-2461
Subject:
nickel; nickel oxide,   etc   ; electrochemistry; electrodes; electrolytes; graphene; lithium; lithium batteries;     Show all 8 Subjects
Abstract:
... The electrochemical performance of Li-ion batteries, which is limited by large volume changes and low intrinsic conductivity, can be improved by using a NiO–graphene composite as an electrode. Herein, we constructed metallic Ni-dotted NiO flakes on folded graphene and evaluated the electrochemical performance of the resulting composites. Introduction of graphene produced an excellent 2D structure ...
DOI:
10.1007/s10853-018-2882-3

2. Effect of nickel coating on the stress-dependent electric permittivity, piezoelectricity and piezoresistivity of carbon fiber, with relevance to stress self-sensing

Author:
Xi, Xiang; Chung, D.D.L.
Source:
Carbon 2019 v.145 pp. 401-410
ISSN:
0008-6223
Subject:
nickel,   etc   ; carbon; carbon fibers; coatings;     Show all 4 Subjects
Abstract:
... This paper unprecedentedly reports the effect of metal (nickel) coating on the stress-dependent electric permittivity, piezoelectricity and piezoresistivity of carbon fiber. Both permittivity (2 kHz) and DC conductivity of carbon fiber are increased by nickel coating. For 7-μm diameter carbon fiber, nickel coating (0.25-μm thickness) increases the relative permittivity from 12,200 to 63,200, and d ...
DOI:
10.1016/j.carbon.2019.01.034

3. Nickel-Catalyzed Carbonylation of Difluoroalkyl Bromides with Arylboronic Acids

Author:
Zhao, Hai-Yang; Gao, Xing; Zhang, Shu; Zhang, Xingang
Source:
Organic letters 2019 v.21 no.4 pp. 1031-1036
ISSN:
1523-7052
Subject:
nickel,   etc   ; acids; chemical reactions; moieties; organobromine compounds;     Show all 5 Subjects
Abstract:
... A nickel-catalyzed carbonylative difluoroalkylation reaction with arylboronic acids under 1 atm of CO has been developed. The reaction proceeds under mild reaction conditions with high efficiency and high functional group tolerance. Preliminary mechanistic studies reveal that the arylacyl nickel complex is the key intermediate to circumvent the formation of labile fluoroacyl nickel, and bimetallic ...
DOI:
10.1021/acs.orglett.8b04070

4. Ni(II)-catalyzed C(sp2) H alkynylation/annulation cascades: Regioselective access to 3-methyleneisoindoline-1-one using N,S-bidentate auxiliary

Author:
Chen, Su-Qin; Jiao, Jun-Ying; Zhang, Xing-Guo; Zhang, Xiao-Hong
Source:
Tetrahedron 2019 v.75 no.2 pp. 246-252
ISSN:
0040-4020
Subject:
nickel,   etc   ; alkynes; chemical reactions; moieties; regioselectivity;     Show all 5 Subjects
Abstract:
... A nickel(II)-catalyzed alkynylation/annulation of aryl carboxamides assisted by an N, S-bidentate directing group with terminal alkynes is described. This protocol provides an effective method to selectively furnish a series of biologically 3-methyleneisoindolin-1-one derivatives bearing methylthio group. Various carboxamides and terminal alkynes with a number of functional groups were compatible ...
DOI:
10.1016/j.tet.2018.11.051

5. A novel way of using pyrolytic gas derived from waste rubber: Pyrometallurgical reduction of NiO

Author:
Cumbul Altay, M.; Eroglu, S.
Source:
Journal of hazardous materials 2019 v.367 pp. 77-82
ISSN:
0304-3894
Subject:
nickel; nickel oxide,   etc   ; X-ray diffraction; hydrogen; methane; pyrolysis; rubber; thermodynamics; wastes;     Show all 9 Subjects
Abstract:
... In the present study, a novel way of using pyrolytic gas generated by the pyrolysis of waste rubber was introduced. The method involves reduction of metal oxides by pyrolytic gas. The pyrometallurgical reduction behavior of NiO was studied to demonstrate the feasibility of the process. The rubber pyrolysis and the NiO reduction experiments were carried out in a horizontal tube at 1000 K using Ar a ...
DOI:
10.1016/j.jhazmat.2018.12.057

6. Biomass gasification for hydrogen rich gas in a decoupled triple bed gasifier with olivine and NiO/olivine

Author:
Tursun, Yalkunjan; Xu, Shaoping; Abulikemu, Abulizi; Dilinuer, Talifu
Source:
Bioresource technology 2019 v.272 pp. 241-248
ISSN:
0960-8524
Subject:
nickel; nickel oxide,   etc   ; biomass; catalysts; gasification; hydrogen; hydrogen production; methane; quartz; steam; temperature;     Show all 11 Subjects
Abstract:
... Catalytic steam gasification of biomass has been carried out in decoupled triple bed gasification (DTBG) system which consists of pyrolyzer, reformer and combustor. Olivine and NiO/olivine used as in-situ tar destruction catalyst. The result shows the gasification system with catalytic bed materials allows an option to improve tar removal that enhances H2 production. A gas yield of 1.59 Nm3/kg daf ...
DOI:
10.1016/j.biortech.2018.10.008

7. Nickel(ii)-catalyzed enantioselective α-alkylation of β-ketoamides with phenyliodonium ylide via a radical process

Author:
Guo, Jing; Liu, Xiaohua; He, Changqiang; Tan, Fei; Dong, Shunxi; Feng, Xiaoming
Source:
Chemical communications 2018 v.54 no.86 pp. 12254-12257
ISSN:
1364-548X
Subject:
nickel,   etc   ; chemical reactions; enantioselectivity;     Show all 3 Subjects
Abstract:
... Chiral Lewis acid-promoted enantioselective α-alkylation of β-ketoamides with phenyliodonium ylide was developed. In the presence of a chiral N,N′-dioxide/Ni(ii) complex, the corresponding 1,4-dicarbonyl compounds were obtained with good results (up to 91% yield and 97% ee). Control experiments and EPR studies supported a radical process. ...
DOI:
10.1039/c8cc07140c

8. Morphology of W fibers and kinetic undercooling in directionally solidified NiAl–W eutectic alloy

Author:
Gao, Jianjun; Zhao, Zhilong; Wei, Lufeng; Cui, Kai; Guo, Jingying; Chen, Sen; Hu, Zhirong; Liu, Yalong; Liu, Lin
Source:
Journal of materials science 2018 v.53 no.17 pp. 12523-12533
ISSN:
0022-2461
Subject:
nickel,   etc   ; alloys; aluminum; tungsten;     Show all 4 Subjects
Abstract:
... The relationship between the cross-sectional shape of W fibers and kinetic undercooling in directionally solidified (DS) NiAl–W eutectic alloys was investigated. When the growth rate was less than 8 µm/s, the cross-sectional shape of W fibers was hexagonal (faceted); conversely, when the growth rate was more than 8 µm/s, their cross-sectional shape was elliptical (nonfaceted). Meanwhile, the NiAl ...
DOI:
10.1007/s10853-018-2466-2

9. Hierarchical NiCo2S4@NiCoP core-shell nanocolumn arrays on nickel foam as a binder-free supercapacitor electrode with enhanced electrochemical performance

Author:
Chang, Xinwei; Li, Weilong; Liu, Yinghong; He, Mi; Zheng, Xinliang; Bai, Jinbo; Ren, Zhaoyu
Source:
Journal of colloid and interface science 2019 v.538 pp. 34-44
ISSN:
0021-9797
Subject:
nickel,   etc   ; active sites; capacitance; electrochemistry; electrodes; energy; foams; nanosheets; nanowires;     Show all 9 Subjects
Abstract:
... A novel hierarchical core-shell nanocolumn array, with NiCo2S4 hollow nanowire (NiCo2S4 H-NW) as the core and NiCoP nanosheet (NiCoP NS) as the shell, has been directly synthesized on nickel foam (NF) as self-supported, binder-free electrode for high-performance supercapacitors. The morphological characterizations reveal that the diameter of NiCo2S4 H-NW core is ∼100 nm and the diameter of single ...
DOI:
10.1016/j.jcis.2018.11.080

10. Nickel induced in situ growth of nickel hydroxide nanoflakes on reduced graphite oxide with high energy and power density

Author:
Xue, Tong; Liao, Shi-Jie; Yang, Yue; Yan, Xiang-Hui; Zou, Zhong-Li; Luo, Min
Source:
Journal of colloid and interface science 2019 v.537 pp. 50-56
ISSN:
0021-9797
Subject:
nickel,   etc   ; active sites; capacitance; electrodes; energy; energy density; graphene;     Show all 7 Subjects
Abstract:
... Layered hexagonal Ni(OH)2 nanoflakes have been successfully fabricated on the surface of reduce graphite oxide (rGO) via nickel induced in situ growth in this study. The layers number and size of Ni(OH)2 nanoflakes could be controlled by adjusting the concentration of Ni2+ precursors with nickel as active site on rGO surface. In the three electrode systems, the composite showed a relatively high s ...
DOI:
10.1016/j.jcis.2018.11.002

11. Growth of graphene on non-catalytic substrate by controlling the vapor pressure of catalytic nickel

Author:
Baek, Jinwook; Kim, Jungmo; Kim, Jin; Shin, Byungha; Jeon, Seokwoo
Source:
Carbon 2019 v.143 pp. 294-299
ISSN:
0008-6223
Subject:
nickel,   etc   ; catalysts; feedstocks; graphene; heat; temperature; vapor pressure; vapors;     Show all 8 Subjects
Abstract:
... Here, we demonstrate a simple method of growing graphene directly on various dielectric substrate using vapor-phase metal catalyst via mobile hot-wire (MHW) assisted chemical vapor deposition (CVD). The MHW made of nickel (Ni) is utilized as an independent source of the metal vapor as well as a moving heat source. The hot-wire temperature (Tw, 800–1100 °C) and the total chamber pressure (Ptot, 0.1 ...
DOI:
10.1016/j.carbon.2018.11.027

12. Magnetic hollow mesoporous carbon composites with impedance matching for highly effective microwave absorption

Author:
Shen, Guozhu; Ren, Junzhao; Zhao, Bin; Mei, Buqing; Wu, Hongyan; Fang, Xumin; Xu, Yewen
Source:
Journal of materials science 2019 v.54 no.5 pp. 4024-4037
ISSN:
0022-2461
Subject:
nickel,   etc   ; air; carbon; carbonization; iron; magnetism; nanoparticles; porous media; temperature;     Show all 9 Subjects
Abstract:
... Lightweight hollow mesoporous carbon spheres (HMCSs) with large air/carbon interface in the mesoporous shell and interior void have been successfully synthesized via a ‘polymerization–pyrolysis–etching’ route. The complex permittivity of the HMCSs can be easily adjusted by carbonization temperature in the frequency range of 2–18 GHz, which is in favor of designing absorbers in different frequency ...
DOI:
10.1007/s10853-018-3100-z

13. Tunable induced magnetic moment and in-plane conductance of graphene in Ni/graphene/Ni nano-spin-valve-like structure: A first principles study

Author:
Wicaksono, Yusuf; Teranishi, Shingo; Nishiguchi, Kazutaka; Kusakabe, Koichi
Source:
Carbon 2019 v.143 pp. 828-836
ISSN:
0008-6223
Subject:
nickel,   etc   ; energy; ferrimagnetic materials; graphene; magnetic properties; magnetism; nanomaterials; slabs;     Show all 8 Subjects
Abstract:
... This study theoretically investigated the magnetic properties and electronic structure of a graphene-based nano-spin-valve-like structure. Magnetic nickel layers on both sides of the graphene were considered. A spin-polarized generalized-gradient approximation determined the electronic states. In an energetically stable stacking arrangement of graphene and two nickel layers, the anti-parallel spin ...
DOI:
10.1016/j.carbon.2018.11.075

14. Designing and constructing core-shell NiCo2S4@Ni3S2 on Ni foam by facile one-step strategy as advanced battery-type electrodes for supercapattery

Author:
Lin, Jinghuang; Yan, Yaotian; Zheng, Xiaohang; Zhong, Zhengxiang; Wang, Yiheng; Qi, Junlei; Cao, Jian; Fei, Weidong; Huang, Yudong; Feng, Jicai
Source:
Journal of colloid and interface science 2019 v.536 pp. 456-462
ISSN:
0021-9797
Subject:
nickel,   etc   ; electrodes; electrolytes; electron transfer; energy; foams; nanomaterials; sulfur;     Show all 8 Subjects
Abstract:
... Herein, we successfully design and construct core-shell nanostructured NiCo2S4@Ni3S2 directly on Ni foam by a scalable and effective one-step strategy. Further, through simply and accurately controlling the concentration of sulfur source, various nanostructures of NiCo2S4@Ni3S2 arrays in situ on Ni foam are successfully synthesized. The intriguing core-shell structures and integrated electrode con ...
DOI:
10.1016/j.jcis.2018.10.072

15. Room temperature, liquid-phase Al₂O₃ surface coating approach for Ni-rich layered oxide cathode material

Author:
NeudeckThese authors contributed equally., Sven; Strauss, Florian; Garcia, Grecia; Wolf, Hannes; Janek, Jürgen; Hartmann, Pascal; Brezesinski, Torsten
Source:
Chemical communications 2019 v.55 no.15 pp. 2174-2177
ISSN:
1364-548X
Subject:
nickel,   etc   ; aluminum oxide; ambient temperature; cathodes; chemical reactions; coatings;     Show all 6 Subjects
Abstract:
... A room temperature, atomic-layer-deposition-like coating strategy for NCM811 (80% Ni) is reported. Trimethylaluminum is shown to readily react with adsorbed moisture, leading both to Al₂O₃ surface layer formation on NCM811 and to trace H₂O removal in a single treatment step. Even more importantly, the cycling performance of pouch cells at 45 °C is greatly improved. ...
DOI:
10.1039/c8cc09618j

16. Development of a novel hybrid regenerative-electrode ammonia fuel cell and battery system

Author:
Siddiqui, Osamah; Dincer, Ibrahim
Source:
Energy conversion and management 2019 v.181 pp. 476-484
ISSN:
0196-8904
Subject:
nickel,   etc   ; ammonia; anodes; batteries; cathodes; electrochemistry; exergy; fuel cells; fuels;     Show all 9 Subjects
Abstract:
... In the present study, a novel hybrid ammonia fuel cell and battery system is conceptually developed and studied electrochemically and thermodynamically. The novel system proposes a new method to enhance the utilization of electrochemical energy. The fuel cell cathode comprises of a regenerative nickel electrode. Ammonia is utilized as fuel at the fuel cell anode. During fuel cell operation, the ha ...
DOI:
10.1016/j.enconman.2018.12.032

17. Synthesis of micron-sized LiNi0.5Mn1.5O4 single crystals through in situ microemulsion/coprecipitation and characterization of their electrochemical capabilities

Author:
Lu, Xiaojun; Liu, Cong; Zhu, Weijie; Lu, Zhongpei; Li, Weili; Yang, Yang; Yang, Gang
Source:
Powder technology 2019 v.343 pp. 445-453
ISSN:
0032-5910
Subject:
nickel,   etc   ; coprecipitation; crystals; droplets; electrochemistry; emulsions; manganese; nanoparticles; powders;     Show all 9 Subjects
Abstract:
... LiNi0.5Mn1.5O4 single crystals are synthesized using a two-step method consisting of emulsion/in situ co-precipitation and sintering reaction. In this process, Oil-in-water (Span80-Tween80-kerosene-H2O) emulsion is used as the in situ co-precipitation site. The co-precipitation is occurred within each emulsion droplet to produce the precursor when the aqueous precipitant is dropped into the emulsi ...
DOI:
10.1016/j.powtec.2018.11.038

18. Charge transfer and hybridization effect at the graphene-nickel interface: A tight binding model study

Author:
Sahu, Sivabrata; Sahoo, Mihir Ranjan; Kushwaha, Anoop Kumar; Rout, G.C.; Nayak, S.K.
Source:
Carbon 2019 v.142 pp. 685-696
ISSN:
0008-6223
Subject:
nickel,   etc   ; electrons; graphene; hybridization; magnetic properties; magnetism; models; temperature;     Show all 8 Subjects
Abstract:
... We have investigated here, the electronic and magnetic properties of graphene–nickel system by tight-binding mean-field approach. Strong hybridization between the 2pz orbital of graphene and 3dz2 orbital of nickel occurs when monolayer graphene is placed over a single layer of ferromagnetically ordered Ni (111) metal due to the excellent lattice matching between the two layers. This hybridization ...
DOI:
10.1016/j.carbon.2018.10.078

19. Correction to: The mobility of the trace metals copper, zinc, lead, cobalt, and nickel in tropical estuarine sediments, Ebrie Lagoon, Côte d’Ivoire

Author:
Kouassi, N’Guessan Louis Berenger; Yao, Koffi Marcellin; Sangare, Naminata; Trokourey, Albert; Metongo, Bernard Soro
Source:
Journal of soils and sediments 2019 v.19 no.2 pp. 945
ISSN:
1439-0108
Subject:
nickel,   etc   ; cobalt; copper; estuarine sediments; lead; zinc; Cote d'Ivoire;     Show all 7 Subjects
Abstract:
... Article with DOI 10.1007/s11368-018-2062-8, written by N. L. B. Kouassi et al., was originally published electronically on SpringerLink on 23 June 2018 with open access. Author’s decision to cancel Open Choice and copyright changed to © Springer-Verlag GmbH Germany, part of Springer Nature and the article is distributed under the terms of copyright. ...
DOI:
10.1007/s11368-018-2098-9

20. Modulating the Interlayer Spacing and Na⁺/Vacancy Disordering of P2-Na₀.₆₇MnO₂ for Fast Diffusion and High-Rate Sodium Storage

Author:
Tie, Da; Gao, Guofeng; Xia, Fang; Yue, Ruyun; Wang, Qingjie; Qi, Ruijuan; Wang, Bo; Zhao, Yufeng
Source:
ACS applied materials & interfaces 2019 v.11 no.7 pp. 6978-6985
ISSN:
1944-8252
Subject:
nickel,   etc   ; batteries; cathodes; electrochemistry; magnesium; materials science; sodium;     Show all 7 Subjects
Abstract:
... Modulating the interlayer spacing and Na⁺/vacancy disordering can significantly affect the electrochemical behavior of P2-type cathode materials. In this work, we prepare a series of P2-Na₀.₆₇MnO₂ cathodes (Na₀.₆₇Ni₀.₂–ₓMn₀.₈MgₓO₂) with varying doping amounts of Mg and Ni to realize the maximization of the interlayer spacing within the experimental range and optimize the Na⁺/vacancy ordering. Cons ...
DOI:
10.1021/acsami.8b19134