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| 1 | Probing thermally-induced structural evolution during the synthesis of layered Li-, Na-, or K-containing 3d transition-metal oxides显示文摘Layered alkali-containing 3d transition-metal oxides are of the utmost importance in the use of electrode materials for advanced energy storage applications such as Li-,Na-,or K-ion batteries.A significant challenge in the field of materials chemistry is understanding the dynamics of the chemical reactions between alkali-free precursors and alkali species during the synthesis of these compounds.In this study,in situ high-resolution synchrotron-based X-ray diffraction was applied to reveal the Li/Na/K-ion insertion-induced structural transformation mechanism during high-temperature solid-state reaction.The in situ diffraction results demonstrate that the chemical reaction pathway strongly depends on the alkali-free precursor type,which is a structural matrix enabling phase transi-tions.Quantitative phase analysis identifies for the first time the decomposition of lithium sources as the most critical factor for the formation of metastable intermediates or impurities during the entire process of Li-rich layered Li[Li_(0.2)Ni_(0.2)Mn_(0.6)]O_(2) formation.Since the alkali ions have different ionic radii,Na/K ions tend to be located on prismatic sites in the defective layered structure(Na_(2/3-x)[Ni_(0.25)Mn_(0.75)]O_(2) or K_(2/3-x)[Ni_(0.25)Mn_(0.75)]O_(2))during calcination,whereas the Li ions prefer to be localized on the tetrahedral and/or octahedral sites,forming O-type structures. | Weibo Hua Xiaoxia Yang Nicola PMCasati Laijun Liu Suning Wang Volodymyr Baran Michael Knapp Helmut Ehrenberg Sylvio Indris | 2022 | eScience2022，2，2： | 2 |
| 2 | The plastidic pentose phosphate translocator represents a link between the cytosolic and the plastidic pentose phosphate pathways in plant显示文摘 | MICHAEL E MEAURINO V KNAPPE S | 2002 | Plant Physiology2002，128，2： | 1 |
| 3 | Projected Growth in Pharmacy Education and Research, 2010 to 2015显示文摘 | Katherine K Knapp Michael Manolakis Andrew A Webster | 2011 | American Journal of Pharmaceutical Education2011，75，6： | 1 |
| 4 | Audit Conflict: An Empirical Study of the Perceived Ability of Auditors to Resist Management Pressure 显示文摘 | MICHAEL C KNAPP | 1985 | The Accounting Review1985，，2： | 1 |
| 5 | Effect of γ-radiation on radionuclide retention in compacted bentonite 显示文摘 | Michael Holmboe Knapp Karin Norrfors Mats Jonsson | 2011 | Radiation Physics and Chemistry2011，80，： | 1 |
| 6 | 68Ga-DOTANOC PET/CT for the detection of a mesenchymal tumor causing oncogenic osteomalacia显示文摘 | Christian Falck Thomas Rodt Herbert Rosenthal Florian L?nger Thomas Goesling Wolfram H. Knapp Michael Galanski | 2008 | European Journal of Nuclear Medicine and Molecular Imaging2008，，5： | 1 |
| 7 | Reply to John Searle 显示文摘 | Steven Knapp Walter Benn Michaels | 1994 | New literary History1994，25，3： | 1 |
| 8 | Comparison of methods to detect biosurfactant production by diverse microorganisms显示文摘 | Noha H. Youssef Kathleen E. Duncan David P. Nagle Kristen N. Savage Roy M. Knapp Michael J. McInerney | 2003 | Journal of Microbiological Methods2003，，3： | 1 |
| 9 | The plastidic pentose phosphate translocator represents a link between the cytosolic and the plastidic pentose phosphate pathways in plant显示文摘 | MICHAEL E MAURINO V KNAPPE S | 2002 | Plant Physiology2002，128，2： | 1 |
| 10 | Pentavalent rhenium-188 dimercaptosuccinic acid for targeted radiotherapy: synthesis and preliminary animal and human studies显示文摘 | Philip J. Blower Albert S. K. Lam Michael J. O’Doherty Andrew G. Kettle Anthony J. Coakley F. F. Knapp Jr | 1998 | European Journal of Nuclear Medicine1998，，6： | 1 |
| 11 | Rhenium-188 hydroxyethylidene diphosphonate: a new generator-produced radiotherapeutic drug of potential value for the treatment of bone metastases显示文摘 | Wan-Yu Lin Chih-Phoon Lin Si-Jung Yeh Bor-Tsung Hsieh Zei-Tsan Tsai Gann Ting Tzu-Chen Yen Shyh-Jen Wang Furn F. Knapp Michael G. Stabin | 1997 | European Journal of Nuclear Medicine1997，，6： | 1 |
| 12 | Against Theory显示文摘 | Knapp S Michaels W B | | 0，，： | 1 |
| 13 | False positive head-up tilt:显示文摘 | Fabio M Leonelli Ke Wang Joyce M Evans Abhijit R Patwardhan Michael G Ziegler Andrea Natale Charles S Kim Kathleen Rajikovich Charles F Knapp | 2000 | Journal of the American College of Cardiology2000，，： | 1 |
| 14 | Estimation of strain {rom piezoelectric effect and domain switching in morphotropic PZT by combined analysis of macroscopic strain measurements and synchrotron X-ray data显示文摘 | Kung Hans Theissmann Ralf Knapp Michael | 2007 | Acta Materialia2007，55，： | 1 |
| 15 | Rates of Infection After Spine Surgery Based on 108,419 Procedures: A Report from the Scoliosis Research Society Morbidity and Mortality Committee显示文摘 | Justin S. Smith Christopher I. Shaffrey Charles A. Sansur Sigurd H. Berven Kai-Ming G. Fu Paul A. Broadstone Theodore J. Choma Michael J. Goytan Hilali H. Noordeen Dennis R. Knapp Robert A. Hart William F. Donaldson David W. Polly Joseph H. Perra Oheneba | 2011 | Spine2011，，7： | 1 |
| 16 | Activation of 2D MoS_(2) electrodes induced by high-rate lithiation processes显示文摘MoS_(2) is a highly promising material for application in lithium-ion battery anodes due to its high theoretical capacity and low cost.However,problems with a fast capacity decay over cycling,especially at the first cycles,and poor rate performance have deterred its practical implementation.Herein,electrodes comprised solely of few-layers 2D MoS_(2) nanosheets have been manufactured by scalable liquid-phase exfoliation and spray deposition methods.The long-standing controversy questioning the reversibility of conversion processes of MoS_(2)-based electrodes was addressed.Raman studies revealed that,in 2D MoS_(2) electrodes,conversion processes are indeed reversible,where nanostructure played a key role.Cycling of the electrodes at high current rates revealed an intriguing phenomenon consisting of a continuously increasing capacity after ca.100-200 cycles.This phenomenon was comprehensively addressed by a variety of electrochemical and microscopy methods that revealed underlying physical activation mechanisms that involved a range of profound electrode structural changes.Activation mechanisms delivered a capacitive electrode of a superior rate performance and cycling stability,as compared to the corresponding pristine electrodes,and to MoS_(2) electrodes previously reported.Herein,we have devised a methodology to overcome the problem of cycling stability of 2D MoS_(2) electrodes.Moreover,activation of electrodes constitutes a methodology that could be applied to enhance the energy storage performance of electrodes based on other 2D nanomaterials,or combinations thereof,strategically combining chemistries to engineer electrodes of superior energy storage properties. | Tianzhu Liu Georgian Melinte Oleksandr Dolotko Michael Knapp Beatriz Mendoza-Sánchez | 2023 | Journal of Energy Chemistry2023，，3： | 0 |
| 17 | In operando study of orthorhombic V_(2)O_(5) as positive electrode materials for K-ion batteries显示文摘Herein, the electrochemical performance and the mechanism of potassium insertion/deinsertion in orthorhombic V_(2)O_(5) nanoparticles are studied. The V2O5 electrode displays an initial potassiation/depotassiation capacity of 200 mAh g^(−1)/217 mAh g^(−1) in the voltage range 1.5–4.0 V vs. K^(+)/K at C/12 rate, suggesting fast kinetics for potassium insertion/deinsertion. However, the capacity quickly fades during cycling, reaching 54 mAh g^(−1) at the 31st cycle. Afterwards, the capacity slowly increases up to 80 mAh g^(−1) at the 200th cycle. The storage mechanism upon K ions insertion into V2O5 is elucidated. In operando synchrotron diffraction reveals that V_(2)O_(5) first undergoes a solid solution to form K_(0.6)V_(2)O_(5) phase and then, upon further K ions insertion, it reveals coexistence of a solid solution and a two-phase reaction. During K ions deinsertion, the coexistence of solid solution and the two-phase reaction is identified together with an irreversible process. In operando XAS confirms the reduction/oxidation of vanadium during the K insertion/extraction with some irreversible contributions. This is consistent with the results obtained from synchrotron diffraction, ex situ Raman, X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). Moreover, ex situ XPS confirms the “cathode electrolyte interphase” (CEI) formation on the electrode and the decomposition of CEI film during cycling. | Qiang Fu Angelina Sarapulova Lihua Zhu Georgian Melinte Alexander Missyul Edmund Welter Xianlin Luo Michael Knapp Helmut Ehrenberg Sonia Dsoke | 2021 | Journal of Energy Chemistry2021，30，11： | 0 |
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