Doping of titania with manganese for improving cycling and rate performances in lithium-ion batteries

Opra, Denis P.; Gnedenkov, Sergey V.; Sinebryukhov, Sergey L.; Podgorbunsky, Anatoly B.; Sokolov, Alexander A.; Ustinov, A. Yu.; Kuryavyi, V. G.; Mayorov, V. Yu.; Железнов, В. В.

doi:10.1016/j.chemphys.2020.110864

Cited by 25 publications

(11 citation statements)

References 47 publications

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“…The survey spectrum ( Figure 3 f) shows the presence of signals from Na, Ti, and O elements. The existence of carbon in XPS analyses is explained by the nanoscale morphology sensitive to environment contaminations [ 33 , 34 ]. In the photoelectron spectrum of O 1s ( Figure 3 g) two prominent peaks are detected at 530.1 eV (89%) and 531.7 eV (11%), which, respectively, associating with the oxygen bonded to metal and the oxygen of hydroxyl groups or carbonates

existed at the surface.…”

Section: Resultsmentioning

confidence: 99%

Moss-like Hierarchical Architecture Self-Assembled by Ultrathin Na2Ti3O7 Nanotubes: Synthesis, Electrical Conductivity, and Electrochemical Performance in Sodium-Ion Batteries

et al. 2022

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Nanocrystalline layer-structured monoclinic Na2Ti3O7 is currently under consideration for usage in solid state electrolyte applications or electrochemical devices, including sodium-ion batteries, fuel cells, and sensors. Herein, a facile one-pot hydrothermal synthetic procedure is developed to prepare self-assembled moss-like hierarchical porous structure constructed by ultrathin Na2Ti3O7 nanotubes with an outer diameter of 6–9 nm, a wall thickness of 2–3 nm, and a length of several hundred nanometers. The phase and chemical transformations, optoelectronic, conductive, and electrochemical properties of as-prepared hierarchically-organized Na2Ti3O7 nanotubes have been studied. It is established that the obtained substance possesses an electrical conductivity of 3.34 × 10−4 S/cm at room temperature allowing faster motion of charge carriers. Besides, the unique hierarchical Na2Ti3O7 architecture exhibits promising cycling and rate performance as an anode material for sodium-ion batteries. In particular, after 50 charge/discharge cycles at the current loads of 50, 150, 350, and 800 mA/g, the reversible capacities of about 145, 120, 100, and 80 mA∙h/g, respectively, were achieved. Upon prolonged cycling at 350 mA/g, the capacity of approximately 95 mA∙h/g at the 200th cycle was observed with a Coulombic efficiency of almost 100% showing the retention as high as 95.0% initial storage. At last, it is found that residual water in the un-annealed nanotubular Na2Ti3O7 affects its electrochemical properties.

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existed at the surface.…”

Section: Resultsmentioning

confidence: 99%

Moss-like Hierarchical Architecture Self-Assembled by Ultrathin Na2Ti3O7 Nanotubes: Synthesis, Electrical Conductivity, and Electrochemical Performance in Sodium-Ion Batteries

et al. 2022

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“…Two technical routes are presumable to solve this problem. The first route is to incorporate with other elements, particularly metal ions [ 7 , 8 ], nitrogen and oxides [ 9 ], to improve the stability of the crystal structure and to enhance the electrical contact between oxide particles, as well as between oxide particles and the current collector, as demonstrated by Li et al who prepared Fe-Mn-O composites with different Fe/Mn ratios by a simple coprecipitation process. The resultant composites showed better electrochemical properties than those of single Fe 3 O 4 or MnO electrode materials [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of MnO/C/NiO-Doped Porous Multiphasic Composites for Lithium-Ion Batteries by Biomineralized Mn Oxides from Engineered Pseudomonas putida Cells

Liu

et al. 2021

Nanomaterials

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A biotemplated cation-incoporating method based on bacterial cell-surface display technology and biogenic Mn oxide mineralization process was developed to fabricate Mn-based multiphasic composites as anodes for Li-ion batteries. The engineered Pseudomonas putida MB285 cells with surface-immobilized multicopper oxidase serve as nucleation centers in the Mn oxide biomineralization process, and the Mn oxides act as a settler for incorporating Ni ions to form aggregates in this process. The assays using X-ray photoelectron spectroscopy, phase compositions, and fine structures verified that the resulting material MnO/C/NiO (CMB-Ni) was porous multiphasic composites with spherical and porous nanostructures. The electrochemical properties of materials were improved in the presence of NiO. The reversible discharge capacity of CMB-Ni remained at 352.92 mAh g−1 after 200 cycles at 0.1 A g−1 current density. In particular, the coulombic efficiency was approximately 100% after the second cycle for CMB-Ni.

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“…The innovative solution in material chemistry is very often based on nanotechnology. Nanostructured materials hold the key to the novel generation of supercapacitors, lithium-ion/sodium-ion batteries, thermoelectric cells, and photoelectrochemical cells (PEC) [ 2 , 3 , 4 , 5 , 6 , 7 ]. Considering the PEC cell, the heart of the light energy harvesting module is the photoanode [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…The history of photoanode material development starts half a century ago with the discovery of the photoelectroactivity of the TiO 2 monocrystal electrode under UV electromagnetic wave illumination [ 8 ]. Great effort has been undertaken globally to give us novel semiconductor materials with a narrow bandgap, such as BiVO 4 , Fe 3 O 4 , WO 3 , and their derivatives [ 9 , 10 , 11 , 12 ], allowing visible light absorption [ 7 , 8 , 9 , 10 , 11 , 12 ]. The strategy to increase the photoactivity and electroactivity of TiO 2 focuses on modifying the position of the electron bands of the material by doping with non-metals [ 13 , 14 ], by metal doping [ 6 , 7 , 15 ], or the application of surface sensitizers [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Cobalt Doping of Titanium Dioxide Nanotubes towards Photoanode Activity Enhancement

et al. 2021

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Doping and modification of TiO2 nanotubes were carried out using the hydrothermal method. The introduction of small amounts of cobalt (0.1 at %) into the structure of anatase caused an increase in the absorption of light in the visible spectrum, changes in the position of the flat band potential, a decrease in the threshold potential of water oxidation in the dark, and a significant increase in the anode photocurrent. The material was characterized by the SEM, EDX, and XRD methods, Raman spectroscopy, XPS, and UV-Vis reflectance measurements. Electrochemical measurement was used along with a number of electrochemical methods: chronoamperometry, electrochemical impedance spectroscopy, cyclic voltammetry, and linear sweep voltammetry in dark conditions and under solar light illumination. Improved photoelectrocatalytic activity of cobalt-doped TiO2 nanotubes is achieved mainly due to its regular nanostructure and real surface area increase, as well as improved visible light absorption for an appropriate dopant concentration.

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Doping of titania with manganese for improving cycling and rate performances in lithium-ion batteries

Cited by 25 publications

References 47 publications

Moss-like Hierarchical Architecture Self-Assembled by Ultrathin Na2Ti3O7 Nanotubes: Synthesis, Electrical Conductivity, and Electrochemical Performance in Sodium-Ion Batteries

Moss-like Hierarchical Architecture Self-Assembled by Ultrathin Na2Ti3O7 Nanotubes: Synthesis, Electrical Conductivity, and Electrochemical Performance in Sodium-Ion Batteries

Synthesis of MnO/C/NiO-Doped Porous Multiphasic Composites for Lithium-Ion Batteries by Biomineralized Mn Oxides from Engineered Pseudomonas putida Cells

Hydrothermal Cobalt Doping of Titanium Dioxide Nanotubes towards Photoanode Activity Enhancement

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