In situ observation of the sodiation process in CuO nanowires

Liu, Huihui; Cao, Fan; He, Zheng; Sheng, Huaping; Li, Lei; Wu, Sung‐Mao; Chun, Liu; Wang, Jianbo

doi:10.1039/c5cc03734d

Cited by 46 publications

(35 citation statements)

References 34 publications

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“…The electrochemical reaction that occurs at the interface is an essential process during battery operation, and the kinetics of the reaction front plays a decisive role in governing the rate performance of batteries . Recently, the lithiation and the sodiation processes of CuO nanowires were studied by taking the advantage of in situ transmission electron microscopy (TEM) . Golberg et al.…”

Section: Figurementioning

confidence: 99%

Revealing the Electrochemical Lithiation Routes of CuO Nanowires by in Situ TEM

Sun

et al. 2016

ChemElectroChem

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The dynamic lithiation processes of CuO nanowires were studied by the construction of an electrochemical reaction cell inside a transmission electron microscope (TEM), where the morphology evolution and the phase transformation during lithiation have been recorded in real time by in situ TEM imaging, selected area electron diffraction (SAED) patterning and electron energy loss spectroscopy (EELS). The lithiated length (L) and the corresponding lithiation time (t) of the nanowires were measured to investigate the lithiation kinetics. Based on the relationship between L and t it is found that two lithiation reaction routes occur in the CuO nanowires. The lithiation of CuO nanowires with smaller resistance under −3.5 V potential is speculated to be a two‐step lithiation route controlled by a short‐range interface reaction, whereas upon the same applied potential the lithiation of nanowires with larger resistance presents a diffusion process with a general one‐step reaction route. The research enriches our understanding of the lithiation kinetics of CuO anodes and also the solid‐state electrochemical reaction mechanism of CuO.

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Section: Figurementioning

confidence: 99%

Revealing the Electrochemical Lithiation Routes of CuO Nanowires by in Situ TEM

Sun

et al. 2016

ChemElectroChem

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“…[ 397 ] In the in situ TEM measurement, CuO nanowires and Na metal were used as the working and counter electrodes, respectively. A mixture of Na 2 O and NaOH that was naturally grown on a Na metal surface was used as the solid electrolyte (Figure 15 d).…”

Section: (26 Of 38)mentioning

confidence: 99%

“…A few strategies were proposed including molecular tuning of the mother structure, surface coating, and polymerization. [ 266,389,394,397,[454][455][456][457][458]461,465 ] Several biomolecule-based organic compounds were also investigated as potential organic anodes for NIBs. [459][460][461] Luo et al demonstrated that coroanic acid disodium salt (CADS) is capable of delivering 246.7 mA h g −1 of capacity at the voltage range of 0.7 to 2.0 V vs Na + /Na, however, the capacity of the CADS electrode rapidly faded because of the volume change during phase transformation.…”

Section: Organic Anodesmentioning

confidence: 99%

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Kim

Zhang

et al. 2016

Advanced Energy Materials

849

591

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Grid‐scale energy storage systems (ESSs) that can connect to sustainable energy resources have received great attention in an effort to satisfy ever‐growing energy demands. Although recent advances in Li‐ion battery (LIB) technology have increased the energy density to a level applicable to grid‐scale ESSs, the high cost of Li and transition metals have led to a search for lower‐cost battery system alternatives. Based on the abundance and accessibility of Na and its similar electrochemistry to the well‐established LIB technology, Na‐ion batteries (NIBs) have attracted significant attention as an ideal candidate for grid‐scale ESSs. Since research on NIB chemistry resurged in 2010, various positive and negative electrode materials have been synthesized and evaluated for NIBs. Nonetheless, studies on NIB chemistry are still in their infancy compared with LIB technology, and further improvements are required in terms of energy, power density, and electrochemical stability for commercialization. Most recent progress on electrode materials for NIBs, including the discovery of new electrode materials and their Na storage mechanisms, is briefly reviewed. In addition, efforts to enhance the electrochemical properties of NIB electrode materials as well as the challenges and perspectives involving these materials are discussed.

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“…Additionally, the W tip was moved carefully to contacted the CuO−Pt NW presented in Figure e again, and thus an electric potential was applied to the CuO−Pt NW. The potential increased gradually and was cut off once the Pt NPs started to merge (see the insets in Figure a and 4b).…”

Section: Resultsmentioning

confidence: 99%

Controllable Elasticity Storage and Release in CuO−Pt Core‐Shell Nanowires

Cao

et al. 2018

ChemNanoMat

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One‐dimensional (1D) core‐shell heterostructures can exhibit novel and flexible properties when two different materials are combined. In this work, Pt nanoparticles are directly deposited onto CuO nanowires (NWs), forming 1D CuO−Pt core‐shell heterostructures with elastic and plastic behaviors dominating in the CuO‐core and Pt‐shell, respectively, under bending deformation. Interestingly, the plastically deformed Pt‐shell leads to a delayed or even terminated elasticity restoration of the CuO‐core NWs after unloading. Moreover, the release of the elasticity in CuO NW can be easily regulated not only via controlling the diameter of the CuO−Pt NWs, but also by thermal heating. The result shows a flexible 1D nanostructure with potential applications in micro/nano electro‐mechanical systems, such as mechanical energy storage and thermal sensors.

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In situ observation of the sodiation process in CuO nanowires

Cited by 46 publications

References 34 publications

Revealing the Electrochemical Lithiation Routes of CuO Nanowires by in Situ TEM

Revealing the Electrochemical Lithiation Routes of CuO Nanowires by in Situ TEM

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Controllable Elasticity Storage and Release in CuO−Pt Core‐Shell Nanowires

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