scholarly journals Correlative electrochemical strain and scanning electron microscopy for local characterization of the solid state electrolyte Li1.3Al0.3Ti1.7(PO4)3

2018 ◽  
Vol 9 ◽  
pp. 1564-1572 ◽  
Author(s):  
Nino Schön ◽  
Deniz Cihan Gunduz ◽  
Shicheng Yu ◽  
Hermann Tempel ◽  
Roland Schierholz ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Solid State ◽  
Electrochemical Impedance ◽  
Secondary Phase ◽  
Ion Conductivity ◽  
Correlative Microscopy ◽  
Li Ion ◽  
Solid State Electrolytes ◽  
Scanning Electron

Correlative microscopy has been used to investigate the relationship between Li-ion conductivity and the microstructure of lithium aluminum titanium phosphate (Li1.3Al0.3Ti1.7(PO4)3, LATP) with high spatial resolution. A key to improvement of solid state electrolytes such as LATP is a better understanding of interfacial and ion transport properties on relevant length scales in the nanometer to micrometer range. Using common techniques, such as electrochemical impedance spectroscopy, only global information can be obtained. In this work, we employ multiple microscopy techniques to gain local chemical and structural information paired with local insights into the Li-ion conductivity based on electrochemical strain microscopy (ESM). Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) have been applied at identical regions to identify microstructural components such as an AlPO4 secondary phase. We found significantly lower Li-ion mobility in the secondary phase areas as well as at grain boundaries. Additionally, various aspects of signal formation obtained from ESM for solid state electrolytes are discussed. We demonstrate that correlative microscopy is an adjuvant tool to gain local insights into interfacial properties of energy materials.

Thermal Evolution of NASICON Type Solid-State Electrolytes with Lithium at High Temperature via In-Situ Scanning Electron Microscopy

2021 ◽  
Author(s):  
Shirin Kaboli ◽  
Gabriel Girard ◽  
Wen Zhu ◽  
Alina Cristina Gheorghe ◽  
Vijh Ashok ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
High Temperature ◽  
Solid State ◽  
Thermal Evolution ◽  
Nasicon Type ◽  
Solid State Electrolytes ◽  
Scanning Electron

We present the thermal evolution of two NASICON-type ceramics namely LATP (Li1+xAlxTi2−x(PO4)3) and LAGP (Li1+xAlxGe2−x(PO4)3) by monitoring the electrode-electrolyte interfaces (i.e., Li/LATP and Li/LAGP) at temperatures up to 330 C...

SINTESIS DAN KARAKTERISASI Li4Ti5O12 YANG DILAPISI KARBON DENGAN METODE SOLID STATE REACTION UNTUK ANODA ION LITHIUM

2020 ◽  
Vol 3 (2) ◽  
pp. 103-113
Author(s):  
Lediliocza Lediliocza ◽  
Sitti Ahmiatri Saptari ◽  
Slamet Priyono
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Solid State ◽  
Electrochemical Impedance ◽  
X Ray Diffraction ◽  
Food Grade ◽  
X Ray ◽  
Lithium Titanium ◽  
Charge Discharge ◽  
Scanning Electron

Telah dilakukan sintesis material anoda Li4Ti5O12 dilapisi karbon melalui metode solid state, dengan bahan baku LiOH H2O dan TiO2. sintesis dilakukan dengan variasi sumber karbon yaitu Super. P, Tapioka, dan karbon aktif Food grade. Prekursor Li4Ti5O12 disinter pada suhu 800o C selama 4 jam pada atmosfer udara bebas. Sedangkan proses pelapisan karbon dilakukan dengan milling basah dan sinter pada suhu 600o C selama 1 jam pada atmosfer N2. Karakterisasi yang dilakukan meliputi analisa untuk melihat perbedaan performa elektrokimia pada variasi sumber karbon yang digunakan, diantaranya analisa XRD (X-ray Diffraction) untuk mengetahui pembentukan fasa Li4Ti5O12, FESEM ( Field Emission Scanning Electron Microscopy) untuk menganalisa morfologi yang terbentuk, dan untuk mengetahui performa elektrokimia dilakukan pengujian Cyclic voltammetry, charge-discharge dan Electrochemical Impedance Spectroscopy (EIS). Hasil karaktrisasi terbentuk fasa Lithium titanium oxide (Li4Ti5O12) sebesar 96,1% dan fasa rutile (TiO2) sebesar 3,1%. Hasil karakterisasi FE-SEM menunjukan morfologi penyebaran karbon pada anoda Li4Ti5O12/C dengan sumber karbon Super P, paling homogen dbandingkan dengan anoda Li4Ti5O12/C dengan sumber karbon Tapioka kemudian anoda Li4Ti5O12/C dengan sumber karbon food grade. Performa elektrokimia yang dihasilkan Li4Ti5O12/C dengan sumber karbon Tapioka memiliki nilai konduktivitas elektronik dan konduktivitas ionik paling besar, dan menunjukan difusi ion lithium yang sangat kecil, namun memiliki nilai koefesien difusi 2,54 × 10−13 cm-2 s-1 mendekati besar koefesien difusi Li4Ti5O12/C (Sp) sebesar 2,61 × 10−13 cm-2 s1, serta memiliki nilai kapasitas discharge 161.05 mAh/g, mendekati nilai kapasitas discharge Li4Ti5O12/C (Sp) sebesar 167.84 mAh/g. 

scholarly journals Corrosion Inhibitive Action and Adsorption Behaviour of Justicia Secunda Leaves Extract as an Eco‐Friendly Inhibitor for Aluminium in Acidic Media

2021 ◽  
Vol 11 (5) ◽  
pp. 13019-13030
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Weight Loss ◽  
Electrochemical Impedance ◽  
Physical Adsorption ◽  
Charge Transfer Resistance ◽  
Aluminum Surface ◽  
Protective Film ◽  
Transfer Resistance ◽  
Scanning Electron

The extract of Justicia secunda (JS) leaves was investigated as an eco‐friendly corrosion inhibitor of aluminum in 0.5 M HCl using weight loss, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), and scanning electron microscopy (SEM) techniques. The inhibitor concentrations used ranged from 50 to 250 ppm at 30, 40, and 50oC. Results show that Justicia secunda acts as a good inhibitor for aluminum. Its efficiency increased with increasing inhibitor concentration but decreased with increasing temperature. Maximum inhibition efficiency as high as 94.3% was found at 30°C for 250 ppm of the inhibitor with the weight loss technique. Tafel polarization results show that the extract acts as a mixed-type inhibitor. The Nyquist plots indicated decreasing double-layer capacitance and increasing charge transfer resistance on increasing JS concentration. The inhibition action occurred through the physical adsorption of the extract on the aluminum surface. The adsorption process was found to follow Langmuir adsorption isotherm. The formation of a protective film on the metal surface was confirmed by scanning electron microscopy.

SYNTHESIS, MORPHOLOGY AND STRUCTURAL PROPERTIES OF (GD,ND)SR2RUCU2O8 SAMPLES

2003 ◽  
Vol 17 (04n06) ◽  
pp. 899-904 ◽  
Author(s):  
A. VECCHIONE ◽  
M. GOMBOS ◽  
C. TEDESCO ◽  
A. IMMIRZI ◽  
L. MARCHESE ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Solid State ◽  
Powder Diffraction ◽  
Solid State Reaction ◽  
X Ray ◽  
Structure And Morphology ◽  
Polycrystalline Powder ◽  
Scanning Electron

NdSr 2 RuCu 2 O x material has been prepared as polycrystalline powder by solid state reaction. The compound has been investigated by synchrotron x-ray powder diffraction and scanning electron microscopy. The experimental results show that the average crystal structure is a disordered cubic perovskite with Nd and Sr cations occupying the same site and the same substitution is found for Cu and Ru atoms. A comparison between the crystal structure and morphology of this compound and the superconducting tetragonal GdSr 2 RuCu 2 O 8 is also discussed.

Highly Conjugated Three-Dimensional Covalent Organic Frame- works with Enhanced Li-ion Conductivity as Solid-State Electrolytes for High-Performance Lithium Metal Batteries

2022 ◽  
Author(s):  
Shi Wang ◽  
Xiang-Chun Li ◽  
Tao Cheng ◽  
Yuan-Yuan Liu ◽  
Qiange Li ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
High Performance ◽  
Three Dimensional ◽  
Ion Conductivity ◽  
Covalent Organic Frameworks ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Li Ion ◽  
Solid State Electrolytes

Covalent organic frameworks (COFs) with well-tailored channels have the potential to efficiently transport ions yet remain to be explored. The ion transport capability is generally limited due to the lack...

Immuno EM–OM correlative microscopy in solution by atmospheric scanning electron microscopy (ASEM)

2012 ◽  
Vol 180 (2) ◽  
pp. 259-270 ◽  
Author(s):  
Yuusuke Maruyama ◽  
Tatsuhiko Ebihara ◽  
Hidetoshi Nishiyama ◽  
Mitsuo Suga ◽  
Chikara Sato
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Correlative Microscopy ◽  
Scanning Electron

scholarly journals Phase, microstructure and microwave dielectric properties of Mg0:95Ni0:05Ti0:98Zr0:02O3 ceramics

2015 ◽  
Vol 33 (1) ◽  
pp. 95-99 ◽  
Author(s):  
Abdul Manan ◽  
Dil Nawaz Khan ◽  
Atta Ullah ◽  
Arbab Safeer Ahmad
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Dielectric Properties ◽  
Microwave Dielectric Properties ◽  
Secondary Phase ◽  
Network Analyzer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microwave Dielectric ◽  
Scanning Electron

AbstractMg0:95Ni0:05Ti0:98Zr0:02O3 ceramics was prepared via conventional solid-state mixed-oxide route. The phase, microstructure and microwave dielectric properties of the sintered samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and a vector network analyzer. The microstructure comprised of circular and elongated plate-like grains. The semi quantitative analysis (EDS) of the circular and elongated grains revealed the existence of Mg0:95Ni0:05T2O5 as a secondary phase along with the parent Mg0:95Ni0:05Ti0:98Zr0:02O3 phase, which was consistent with the XRD findings. In the present study, εr ~17.1, Qufo~195855 ± 2550 GHz and τf ~ -46 ppm/K was achieved for the synthesized Mg0:95Ni0:05Ti0:98Zr0:02O3 ceramics sintered at 1325 °C for 4 h.

Study on Corrosion Behavior of Al-Zn-In and Al-Zn-Ga Alloys in NaCl Solution

2011 ◽  
Vol 284-286 ◽  
pp. 1701-1704
Author(s):  
Jing Ling Ma ◽  
Jiu Ba Wen ◽  
Gao Lin Li
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electrochemical Impedance Spectroscopy ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Nacl Solution ◽  
X Ray ◽  
Inductive Loop ◽  
Capacitive Loop ◽  
Scanning Electron

The corrosion behavior of Al-5Zn-0.03In and Al-5Zn-0.03Ga alloys in 3.5 % NaCl solution has been examined by electrochemical methods, scanning electron microscopy, X-ray microanalysis, electrochemical impedance spectroscopy. The results demonstrate that the alloys differ in the microstructure, corroded morphology and electrochemical properties. For Al-5Zn-0.03In alloy, the precipitates enriched in Al and Zn initiates pitting. For Al-5Zn-0.03Ga alloy, corrosion occurs more uniformly, the corrosion of the alloy occurred via the formation of a surface Ga-Al amalgam alloy. The EIS of Al-5Zn-0.03In alloy contains a capacitive loop and an inductive loop; the inductive loop can be attributed to the presence of the pitting. The EIS of Al-5Zn-0.03Ga alloy contains only a capacitive loop.

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