Journal of Electron Spectroscopy and Related Phenomena最新文献

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Visualization of air-induced oxidation in single crystalline LiFe0.6Mn0.4PO4 nanowires with carbon sheath using soft X-ray spectromicroscopy 用软X射线光谱显微镜观察含碳鞘的单晶LiFe0.6Mn0.4PO4纳米线中的空气诱导氧化
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147338
Wenxiong Zhang , Eiji Hosono , Daisuke Asakura , Hayato Yuzawa , Takuji Ohigashi , Masaki Kobayashi , Hisao Kiuchi , Yoshihisa Harada
{"title":"Visualization of air-induced oxidation in single crystalline LiFe0.6Mn0.4PO4 nanowires with carbon sheath using soft X-ray spectromicroscopy","authors":"Wenxiong Zhang ,&nbsp;Eiji Hosono ,&nbsp;Daisuke Asakura ,&nbsp;Hayato Yuzawa ,&nbsp;Takuji Ohigashi ,&nbsp;Masaki Kobayashi ,&nbsp;Hisao Kiuchi ,&nbsp;Yoshihisa Harada","doi":"10.1016/j.elspec.2023.147338","DOIUrl":"10.1016/j.elspec.2023.147338","url":null,"abstract":"<div><p>Single crystalline LiFe<sub>0.6</sub>Mn<sub>0.4</sub>PO<sub>4</sub><span> (LFMP) nanowires with carbon sheath were analyzed by scanning transmission X-ray microscopy (STXM) with a spatial resolution of around 130 nm. The pinpoint Fe </span><em>L</em><span>-edge X-ray absorption spectroscopy (XAS) spectra in the STXM images revealed the natural oxidation of Fe</span><sup>2+</sup> to Fe<sup>3+</sup> near the tip of the nanowire by air exposure. The pinpoint O <em>K</em>-edge XAS spectra simultaneously changed with the Fe <em>L</em>-edge XAS in the STXM mapping because of the hybridization between the O 2<em>p</em> and Fe 3<em>d</em> orbitals. On the other hand, the Mn <em>L</em>-edge XAS spectra showed an almost uniform Mn<sup>2+</sup> state all over the nanowires, suggesting that the Mn<sup>2+</sup> state is stable against the natural oxidation in contrast to the Fe<sup>2+</sup> state. We have thus demonstrated that STXM is a useful technique to visualize oxidized areas of materials and to reveal detailed information about their electronic structure.</p></div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"266 ","pages":"Article 147338"},"PeriodicalIF":1.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42348679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preface 前言
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-06-01 DOI: 10.1016/j.elspec.2023.147339
H. Daimon, M. V. Van Hove
{"title":"Preface","authors":"H. Daimon, M. V. Van Hove","doi":"10.1016/j.elspec.2023.147339","DOIUrl":"https://doi.org/10.1016/j.elspec.2023.147339","url":null,"abstract":"","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42708791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calculations of term energies, radiative transition wavelengths and Auger electron energies for resonances of F4+ F4共振项能量、辐射跃迁波长和俄歇电子能量的计算+
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-05-01 DOI: 10.1016/j.elspec.2023.147335
Chao Chen, Bing-cong Gou
{"title":"Calculations of term energies, radiative transition wavelengths and Auger electron energies for resonances of F4+","authors":"Chao Chen,&nbsp;Bing-cong Gou","doi":"10.1016/j.elspec.2023.147335","DOIUrl":"10.1016/j.elspec.2023.147335","url":null,"abstract":"<div><p><span>In this work, the saddle-point variation combined with complex-rotation methods are used to calculate term energies, radiative transition wavelengths and Auger transition energies of the 1</span><em>s</em>2<em>s</em><sup>2</sup>2<em>p</em><sup>2</sup> (<sup>2</sup>S, <sup>2</sup>P, <sup>2</sup>D, <sup>4</sup>P), 1<em>s</em>2<em>s</em><sup>2</sup>2<em>p</em>3<em>p</em> (<sup>2</sup>S, <sup>2</sup>P, <sup>2</sup>D), 1<em>s</em>2<em>s</em>2<em>p</em><sup>3</sup> (<sup>2,4</sup>S°, <sup>2,4</sup>P°, <sup>2,4</sup>D°), and 1<em>s</em>2<em>p</em><sup>4</sup> (<sup>2</sup>S, <sup>2</sup>P, <sup>2</sup>D, <sup>4</sup>P) resonances for F<sup>4+</sup>. The present term energies, radiative rates, radiative transition wavelengths, Auger rates and corresponding transition energies agree well with the multiconfiguration Dirac-Fock calculation results listed in the literature. Other transition data in this work are expected to offer reference values for future studies.</p></div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"265 ","pages":"Article 147335"},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48605730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging the complex interactions in CuAg-PEO nanoparticles ensemble for enhanced CO2 reduction CuAg-PEO纳米粒子系综中复杂相互作用的成像增强CO2还原
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-05-01 DOI: 10.1016/j.elspec.2023.147331
Xinye Yuan , Tatiana Morin Caamano , Tianxiao Sun , Elena A. Baranova , Yaser Abu-Lebdeh , Jigang Zhou , Jian Wang , Huaidong Jiang
{"title":"Imaging the complex interactions in CuAg-PEO nanoparticles ensemble for enhanced CO2 reduction","authors":"Xinye Yuan ,&nbsp;Tatiana Morin Caamano ,&nbsp;Tianxiao Sun ,&nbsp;Elena A. Baranova ,&nbsp;Yaser Abu-Lebdeh ,&nbsp;Jigang Zhou ,&nbsp;Jian Wang ,&nbsp;Huaidong Jiang","doi":"10.1016/j.elspec.2023.147331","DOIUrl":"10.1016/j.elspec.2023.147331","url":null,"abstract":"<div><p>CO<sub>2</sub><span> electrochemical reduction (CO</span><sub>2</sub>ER) is a promising technology that can convert CO<sub>2</sub><span> into useful chemicals and fuels with simultaneously reducing greenhouse gas emissions. Cu nanoparticles-based catalysts are an optimal choice of CO</span><sub>2</sub>ER due to its excellent conductivity and catalytic activity. In this study, we combined scanning transmission X-ray microscopy (STXM) and spectro-ptychography to investigate the chemical and electronic structural changes of the CuAg nanocatalysts before and after CO<sub>2</sub>ER. We observed that Cu species with the same valence state self-aggregate into separated phases. For the spent CuAg nanocatalysts after CO<sub>2</sub><span>ER, most Cu(I) and Cu(0) species are oxidized to Cu(II) together with CuO<span> transforming into undetermined Cu(II) species. We believe these mechanisms are the key reason why the CuAg nanocatalysts lost catalytic activity. Such information will be highly valuable for understanding Cu nanoparticles catalyzed CO</span></span><sub>2</sub>ER.</p></div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"265 ","pages":"Article 147331"},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41537000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An algorithm for subtraction of doublet emission lines in angle-resolved photoemission spectroscopy 角分辨光发射光谱中双重发射线的减法算法
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-05-01 DOI: 10.1016/j.elspec.2023.147323
Yaoju Tarn , Mekhola Sinha , Christopher Pasco , Darrell G. Schlom , Tyrel M. McQueen , Kyle M. Shen , Brendan D. Faeth
{"title":"An algorithm for subtraction of doublet emission lines in angle-resolved photoemission spectroscopy","authors":"Yaoju Tarn ,&nbsp;Mekhola Sinha ,&nbsp;Christopher Pasco ,&nbsp;Darrell G. Schlom ,&nbsp;Tyrel M. McQueen ,&nbsp;Kyle M. Shen ,&nbsp;Brendan D. Faeth","doi":"10.1016/j.elspec.2023.147323","DOIUrl":"10.1016/j.elspec.2023.147323","url":null,"abstract":"<div><p><span><span>Plasma discharge lamps are widely utilized in the practice of angle-resolved </span>photoemission<span> spectroscopy (ARPES) experiments as narrow-linewidth ultraviolet photon sources. However, many emission lines such as Ar-I, Ne-I, and Ne-II have closely spaced doublet emission lines, which result in superimposed replica on the measured ARPES spectra. Here, we present a simple method for subtracting the contribution of these doublet emission lines from photoemission spectra. Benchmarking against ARPES spectra of well-characterized 2D materials, we demonstrate that this algorithm manages to subtract the doublet signal and reproduce the key features of the monochromated He-I</span></span><span><math><mi>α</mi></math></span><span> spectra in a physically sound manner that reliably reproduces quantifiable dispersion relations and quasiparticle lifetimes.</span></p></div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"265 ","pages":"Article 147323"},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47048720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ionic liquid functionalized tin halide perovskite investigated by STXM and spectro-ptychography 离子液体功能化卤化锡钙钛矿的STXM和光谱技术研究
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-05-01 DOI: 10.1016/j.elspec.2023.147330
Tianxiao Sun , Shengnan Zuo , Bo He , Xinye Yuan , Guixiang Li , Jigang Zhou , Markus Weigand , Antonio Abate , Jian Wang
{"title":"Ionic liquid functionalized tin halide perovskite investigated by STXM and spectro-ptychography","authors":"Tianxiao Sun ,&nbsp;Shengnan Zuo ,&nbsp;Bo He ,&nbsp;Xinye Yuan ,&nbsp;Guixiang Li ,&nbsp;Jigang Zhou ,&nbsp;Markus Weigand ,&nbsp;Antonio Abate ,&nbsp;Jian Wang","doi":"10.1016/j.elspec.2023.147330","DOIUrl":"10.1016/j.elspec.2023.147330","url":null,"abstract":"<div><p><span><span>The structural and compositional properties of tin halide </span>perovskites (CH(NH</span><sub>2</sub>)<sub>2</sub>SnI<sub>3</sub>, FASnI<sub>3</sub><span>) with and without an ionic liquid<span> of 1-Ethyl-3-methylimidazolium bis(trifluormethylsulfonyl) imide (EMITFSI) were investigated using the scanning transmission soft X-ray microscopy (STXM) and spectro-ptychography techniques at the Sn M</span></span><sub>5,4</sub>-edge, I M<sub>5,4</sub><span>-edge, O K-edge, C K-edge, and N K-edge. The study offers a comprehensive interpretation of the spectral characteristics of main components (C, N, Sn, and I) in Sn-based perovskites through STXM-based techniques and further reveals differences between the perovskite samples with and without adding EMITFSI ionic liquid. The chemical imaging<span> of Sn and I shows that the perovskite sample without ionic liquid has Sn-rich regions in iodine cavities, while the ionic liquid-treated sample exhibits a more homogeneous perovskite phase. Furthermore, the C and N K-edge XANES resonance features support the interaction between the non-volatile ionic liquid and FA</span></span><sup>+</sup>, thus playing a protective role in the formation and stabilization of perovskite phase.</p></div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"265 ","pages":"Article 147330"},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48977382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Search for the interatomic Auger effect in Nitrous Oxide 一氧化二氮原子间俄歇效应的研究
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-05-01 DOI: 10.1016/j.elspec.2023.147333
M. Mailhiot , Y. Hikosaka , K. Jänkälä , A. Kivimäki , C. Küstner-Wetekam , J. Palaudoux , E. Pelimanni , F. Penent , C. Zindel , M. Patanen , P. Lablanquie , M. Huttula , A. Hans
{"title":"Search for the interatomic Auger effect in Nitrous Oxide","authors":"M. Mailhiot ,&nbsp;Y. Hikosaka ,&nbsp;K. Jänkälä ,&nbsp;A. Kivimäki ,&nbsp;C. Küstner-Wetekam ,&nbsp;J. Palaudoux ,&nbsp;E. Pelimanni ,&nbsp;F. Penent ,&nbsp;C. Zindel ,&nbsp;M. Patanen ,&nbsp;P. Lablanquie ,&nbsp;M. Huttula ,&nbsp;A. Hans","doi":"10.1016/j.elspec.2023.147333","DOIUrl":"10.1016/j.elspec.2023.147333","url":null,"abstract":"<div><p>The interatomic Auger effect following O 1s ionization in N<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O has been experimentally investigated using multi-electron coincidence spectroscopy. The expected transition energies have been established by comparison to the measured N 1s<sup>−1</sup>v<sup>−1</sup> core-valence double ionization energies. We describe a procedure to eliminate the background of two competing processes contributing spectroscopic signatures to the same energy range, namely double Auger decay of the O 1s vacancy and direct single-photon double ionization into the N 1s<sup>−1</sup>v<sup>−1</sup> states. While the interatomic Auger transitions could not be successfully isolated, we provide an upper boundary of the transition probability of 0.07% with respect to the dominant single Auger decay after O 1s ionization.</p></div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"265 ","pages":"Article 147333"},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41783175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scanning photoelectron spectromicroscopy: From static to operando studies of functional materials 扫描光电子能谱显微镜:从静态到操作的功能材料研究
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-05-01 DOI: 10.1016/j.elspec.2023.147336
M. Amati , Toma Susi , P. Jovičević-Klug , M. Jovičević-Klug , Tomasz Kosmala , Gaetano Granozzi , Stefano Agnoli , Pengfei Yang , Yanfeng Zhang , Mattia Scardamaglia , L. Gregoratti
{"title":"Scanning photoelectron spectromicroscopy: From static to operando studies of functional materials","authors":"M. Amati ,&nbsp;Toma Susi ,&nbsp;P. Jovičević-Klug ,&nbsp;M. Jovičević-Klug ,&nbsp;Tomasz Kosmala ,&nbsp;Gaetano Granozzi ,&nbsp;Stefano Agnoli ,&nbsp;Pengfei Yang ,&nbsp;Yanfeng Zhang ,&nbsp;Mattia Scardamaglia ,&nbsp;L. Gregoratti","doi":"10.1016/j.elspec.2023.147336","DOIUrl":"10.1016/j.elspec.2023.147336","url":null,"abstract":"<div><p>The scanning photoelectron microscope (SPEM), developed more than 30 years ago, has undergone numerous technical developments, providing an incredibly vast kind of feasible sample environments, which span from the traditional high spatial resolution core level based chemical analysis to <em>insitu</em> and <em>operando</em> complex experiments, including also electrochemical setups and operational electronic devices at various temperatures. Another important step ahead is overcoming the so-called pressure gap for <em>operando</em> studies, recently extended to near ambient values by building special environmental cells. Using recent results of conventional and unconventional experiments, obtained with SPEM at the ESCA Microscopy beamline at Elettra Sincrotrone Trieste the present review demonstrates the current potential of this type of photoelectron spectromicroscopy to explore the interfacial properties of functional materials with high spatial resolution.</p></div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"265 ","pages":"Article 147336"},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42233436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scanning transmission X-ray microscopy of hydrogen evolution electrocatalysts on reduction graphene oxide membranes 还原氧化石墨烯膜上析氢电催化剂的扫描透射X射线显微术
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-05-01 DOI: 10.1016/j.elspec.2023.147332
C. O. M. Mariano, Julia Bella Rodriguez, R. Clemente, T. Ohigashi, H. Yuzawa, W. Hsu, J. Shiue, C. Chuang
{"title":"Scanning transmission X-ray microscopy of hydrogen evolution electrocatalysts on reduction graphene oxide membranes","authors":"C. O. M. Mariano, Julia Bella Rodriguez, R. Clemente, T. Ohigashi, H. Yuzawa, W. Hsu, J. Shiue, C. Chuang","doi":"10.1016/j.elspec.2023.147332","DOIUrl":"https://doi.org/10.1016/j.elspec.2023.147332","url":null,"abstract":"","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54203317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scanning transmission X-ray microscopy of hydrogen evolution electrocatalysts on reduction graphene oxide membranes 还原氧化石墨烯膜上析氢电催化剂的扫描透射x射线显微镜研究
IF 1.9 4区 物理与天体物理
Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-05-01 DOI: 10.1016/j.elspec.2023.147332
Carl Osby M. Mariano , Jan Sebastian Dominic Rodriguez , Russell Hizon Clemente , Takuji Ohigashi , Hayato Yuzawa , Wei-Hao Hsu , Jessie Shiue , Cheng-Hao Chuang
{"title":"Scanning transmission X-ray microscopy of hydrogen evolution electrocatalysts on reduction graphene oxide membranes","authors":"Carl Osby M. Mariano ,&nbsp;Jan Sebastian Dominic Rodriguez ,&nbsp;Russell Hizon Clemente ,&nbsp;Takuji Ohigashi ,&nbsp;Hayato Yuzawa ,&nbsp;Wei-Hao Hsu ,&nbsp;Jessie Shiue ,&nbsp;Cheng-Hao Chuang","doi":"10.1016/j.elspec.2023.147332","DOIUrl":"https://doi.org/10.1016/j.elspec.2023.147332","url":null,"abstract":"<div><p><span>Cobalt is one of the promising metal catalysts<span><span> for hydrogen evolution reaction, and its catalytic performance can be further improved by supporting on </span>graphene oxide and reduced graphene oxide as an active interface to the substrate. Scanning transmission X-ray microscopy (STXM) identifies the position-dependent functional groups on the membranes and chemical structure evolution of the Co</span></span><sub>x</sub>O<sub>y</sub><span>. The in-situ mass spectrometer analysis shows the reduction current and H</span><sub>2</sub><span> generation of the electrocatalyst enhanced by the addition of graphene oxide and reduced graphene oxide to Co</span><sub>x</sub>O<sub>y</sub>, as compared to the Co<sub>x</sub>O<sub>y</sub> on the bare substrate. The best hydrogen evolution reaction performance of Co<sub>x</sub>O<sub>y</sub> at − 2.5 V is correlated with the high Co<sup>3+</sup> concentration existed on the reduced graphene oxide, as evidenced by the nano- and element-resolved capability of STXM. With the economical electro-reduction synthesis, this study provides brand-new insights into the critical role of substrate rGO and electrocatalyst Co<sub>x</sub>O<sub>y</sub> toward the design of high efficiency electrocatalyst.</p></div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"265 ","pages":"Article 147332"},"PeriodicalIF":1.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49867367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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