Magnetron sputtering enabled synthesis of nanostructured materials for electrochemical energy storage

Wang, Fengyi; Zhao, Haitao; Liang, Jie; Li, Ting Shuai; Luo, Yongsong; Lu, Siyu; Shi, Xifeng; Zheng, Baozhan; Du, Juan

doi:10.1039/d0ta07644a

Cited by 43 publications

(12 citation statements)

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“…The physical methods present general and simple strategies to synthesize highly pure and doped MN. The most common examples of physical methods of synthesis include physical vapor deposition (PVD) [ 46 , 47 ] and plasma/laser-based methods [ 48 ]. However, the development of multiple hybrids with different morphologies and porosities through physical methods is challenging.…”

Section: Synthesis Of Mnsmentioning

confidence: 99%

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Gujral

Singh

Baskar

et al. 2022

Science and Technology of Advanced Materials

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The over-dependence on fossil fuels is one of the critical issues to be addressed for combating greenhouse gas emissions. Hydrogen, one of the promising alternatives to fossil fuels, is renewable, carbon-free, and non-polluting gas. The complete utilization of hydrogen in every sector ranging from small to large scale could hugely benefit in mitigating climate change. One of the key aspects of the hydrogen sector is its production via cost-effective and safe ways. Electrolysis and photocatalysis are well-known processes for hydrogen production and their efficiency relies on electrocatalysts, which are generally noble metals. The usage of noble metals as catalysts makes these processes costly and their scarcity is also a limiting factor. Metal nitrides and their porous counterparts have drawn considerable attention from researchers due to their good promise for hydrogen production. Their properties such as active metal centres, nitrogen functionalities, and porous features such as surface area, pore-volume, and tunable pore size could play an important role in electrochemical and photocatalytic hydrogen production. This review focuses on the recent developments in metal nitrides from their synthesis methods point of view. Much attention is given to the emergence of new synthesis techniques, methods, and processes of synthesizing the metal nitride nanostructures. The applications of electrochemical and photocatalytic hydrogen production are summarized. Overall, this review will provide useful information to researchers working in the field of metal nitrides and their application for hydrogen production.

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Section: Synthesis Of Mnsmentioning

confidence: 99%

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Gujral

Singh

Baskar

et al. 2022

Science and Technology of Advanced Materials

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“… 26 − 29 The electrode–electrolyte interface is stabilized by depositing a coating layer on the electrode surface to reduce the interface impedance. 30 It was reported that Al 2 O 3 coating can significantly improve the electrochemical performance of LCO films. 31 , 32 Woo et al 33 coated Al 2 O 3 on the surface of a LiCoO 2 positive electrode and found that the Al 2 O 3 coating layer can effectively inhibit the interdiffusion between LiCoO 2 and the solid electrolyte and reduce the increase in interfacial impedance during cycling.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Interfacial Kinetics and High Rate Performance of LiCoO₂ Thin-Film Electrodes by Al Doping and In Situ Al₂O₃ Coating

et al. 2022

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The structure and surface-interface instability of LiCoO 2 thin-film electrodes during charge–discharge cycles are one of the main factors leading to the deterioration of electrochemical performance. Element doping and surface coating are effective strategies to tackle this issue. In this work, Al-doped and in situ Al 2 O 3 -coated LiCoO 2 composite thin-film electrodes are prepared by magnetron sputtering. The results show that the resultant composite thin-film electrodes exhibited excellent cycling stability, with a discharge specific capacity of 40.2 μAh um –1 cm –2 after 240 cycles at 2.5 μA cm –2 , with a capacity retention rate of 94.14%, compared to a discharge capacity of the unmodified sample of only 37.7 μAh um –1 cm –2 after 110 cycles, with a capacity retention rate of 80.04%. In addition, the rate performance of the prepared LiCoO 2 film is significantly improved, and the discharge specific capacity of the Al-doped sample reaches 43.5 μAh um –1 cm –2 at 100 μA cm –2 , which is 38.97% higher than that of the unmodified sample (31.3 μAh um –1 cm –2 ). The enhancement of electrochemical performance is mainly attributed to the synergistic effect of Al doping and in situ Al 2 O 3 coating. The metal Al forms a conductive network in the film, while part of the Al will enter the LiCoO 2 lattice to form a LiAl y Co 1– y O 2 solid solution, promoting the transport of lithium ions and improving the stability of the electrode structure. The in situ continuous deposition of the coating optimizes the active material coating–electrolyte interface.

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“…To this end, we examined Pt1-x-Tax thin film catalysts produced by co-sputtering. The sputter-deposition method is well known for its potential in the synthesis of nanomaterials for electrochemical catalysts [16,17]. It allowed us to prepare the catalyst with platinum and tantalum in any desired ratio on a various of substrates.…”

Section: Introductionmentioning

confidence: 99%

New Electrocatalysts Prepared by Co-Sputter Deposition for the Direct Oxidation of Methanol

Fang¹,

Narayanan²

2021

JEPT

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Direct methanol oxidation catalysts Pt1-x-Tax (0<x<1) were prepared using co-sputter deposition. Characterization of these thin film catalysts was performed using scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray Diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Assessment of the methanol oxidation activity of Pt1-x-Tax catalysts were achieved through half-cell experiments. Among all the Pt1-x-Tax catalysts, Pt0.77-Ta0.23 catalyst showed the best electrochemical area specific activity which was comparable to platinum-ruthenium alloy on carbon (PtRu/C) catalysts. Pt1-x-Tax catalysts worked as bi-functional methanol oxidation catalysts. The surface oxides species activated water molecules and hence facilitated the process of removing carbon monoxide from the platinum sites. The membrane electrode assembly (MEA) of Pt0.77-Ta0.23 catalyst was tested at 60, 80 and 90 °C. The power density achieved at 90 °C was 82 mW/cm2/mg Pt, which was 1.82 times of PtRu/C catalyst with similar platinum loading.

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Magnetron sputtering enabled synthesis of nanostructured materials for electrochemical energy storage

Abstract: Batteries and supercapacitors are promising candidates for electrochemical energy storage while the development of their electrode materials is becoming a bottleneck. This limitation necessitates the design of high specific capacity/capacitance,...

Cited by 43 publications

References 252 publications

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Enhanced Interfacial Kinetics and High Rate Performance of LiCoO₂ Thin-Film Electrodes by Al Doping and In Situ Al₂O₃ Coating

New Electrocatalysts Prepared by Co-Sputter Deposition for the Direct Oxidation of Methanol

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Magnetron sputtering enabled synthesis of nanostructured materials for electrochemical energy storage

Abstract: Batteries and supercapacitors are promising candidates for electrochemical energy storage while the development of their electrode materials is becoming a bottleneck. This limitation necessitates the design of high specific capacity/capacitance,...

Cited by 43 publications

References 252 publications

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Enhanced Interfacial Kinetics and High Rate Performance of LiCoO2 Thin-Film Electrodes by Al Doping and In Situ Al2O3 Coating

New Electrocatalysts Prepared by Co-Sputter Deposition for the Direct Oxidation of Methanol

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Enhanced Interfacial Kinetics and High Rate Performance of LiCoO₂ Thin-Film Electrodes by Al Doping and In Situ Al₂O₃ Coating