<i>In situ</i>electrochemical synchrotron radiation for Li-ion batteries

Alemu, Tibebu; Wang, Fu Ming

doi:10.1107/s1600577517015533

Cited by 12 publications

(11 citation statements)

References 104 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diffraction techniques are among the most exploited methods to characterize battery materials, and chiefly the electrodes [27][28][29][30][31]. The main advantages offered by diffraction methods are: (i) the versatility related to use different radiation sources (Xrays, neutron, electrons, offering complementary information, penetration depth, and sensitivity), (ii) the non-destructive nature of the measurement, and (iii) the possibility to detect both crystalline and amorphous components.…”

Section: Diffraction-based Techniquesmentioning

confidence: 99%

“…Indeed, dedicated cells with specific design are needed to minimize the undesired radiation interaction with battery components such as case, current collectors and separators [27]. Moreover, special radiation sources (e.g., synchrotron [30]) are required to allow for fast acquisitions. Finally, this is a bulk technique which does not allow spatial resolution, but for tomography and microtomography applications (see Section 3.4) [30].…”

Section: Diffraction-based Techniquesmentioning

confidence: 99%

“…Moreover, special radiation sources (e.g., synchrotron [30]) are required to allow for fast acquisitions. Finally, this is a bulk technique which does not allow spatial resolution, but for tomography and microtomography applications (see Section 3.4) [30]. Finally, depending on the selected radiation source (laboratory X-rays, synchrotron light, neutrons, electrons) the data acquisition time can vary significantly, highly impacting on the possible time resolution.…”

Section: Diffraction-based Techniquesmentioning

confidence: 99%

“…The structural and compositional evolution of the electrode was reported by several publications [27][28][29][30][31][32][33][34][35][36][37]. The investigation of SEI formation with diffraction techniques is still challenging and only few examples were reported based on XRD [32][33][34] and neutron diffraction [35][36][37].…”

Section: Diffraction-based Techniquesmentioning

confidence: 99%

See 3 more Smart Citations

The Importance of Interphases in Energy Storage Devices: Methods and Strategies to Investigate and Control Interfacial Processes

2021

View full text Add to dashboard Cite

Extended interphases are playing an increasingly important role in electrochemical energy storage devices and, in particular, in lithium-ion and lithium metal batteries. With this in mind we initially address the differences between the concepts of interface and interphase. After that, we discuss in detail the mechanisms of solid electrolyte interphase (SEI) formation in Li-ion batteries. Then, we analyze the methods for interphase characterization, with emphasis put on in-situ and operando approaches. Finally, we look at the near future by addressing the issues underlying the lithium metal/electrolyte interface, and the emerging role played by the cathode electrolyte interphase when high voltage materials are employed.

show abstract

Section: Diffraction-based Techniquesmentioning

confidence: 99%

Section: Diffraction-based Techniquesmentioning

confidence: 99%

Section: Diffraction-based Techniquesmentioning

confidence: 99%

Section: Diffraction-based Techniquesmentioning

confidence: 99%

See 2 more Smart Citations

The Importance of Interphases in Energy Storage Devices: Methods and Strategies to Investigate and Control Interfacial Processes

2021

View full text Add to dashboard Cite

show abstract

“…These efforts are reflected in the recent structure and electronic/atomic structural investigation of cathode materials by numerous techniques in the context of battery performance [8][9][10]. The metal ions of these materials undergo transformations in terms of oxidation state and local structural order during typical battery operation [11,12]. This affects the nature of metal-oxygen hybridization.…”

Section: Introductionmentioning

confidence: 99%

Soft X-ray Absorption Spectroscopic Investigation of Li(Ni0.8Co0.1Mn0.1)O2 Cathode Materials

et al. 2020

View full text Add to dashboard Cite

Herein, we report the soft X-ray absorption spectroscopic investigation for Li(Ni 0.8 Co 0.1 Mn 0.1 ) O 2 cathode material during charging and discharging. These measurements were carried out at the Mn L-, Co L-, and Ni L-edges during various stages of charging and discharging. Both the Mn and Co L-edge spectroscopic measurements reflect the invariance in the oxidation states of Mn and Co ions. The Ni L-edge measurements show the modification of the oxidation state of Ni ions during the charging and discharging process. These studies show that e g states are affected dominantly in the case of Ni ions during the charging and discharging process. The O K-edge measurements reflect modulation of metal-oxygen hybridization as envisaged from the area-ratio variation of spectral features corresponding to t 2g and e g states.Nanomaterials 2020, 10, 759 2 of 11 soft XAS measurements can give a complete account of underlying phenomena due to the orbital symmetry states in the oxide cathode material during charging and discharging. To depict these phenomena, the Ni-rich cathode material, Li(Ni 0.8 Co 0.1 Mn 0.1 )O 2 , is selected for the present investigation and denoted as NCM811. NCM811 is a well-known layered oxide cathode material and preferred for Li rechargeable batteries due to its high capacity [19,20]. Thus, this work investigates NCM811 cathode materials during charging and discharging using soft XAS. Experimental DetailsX-ray diffraction (XRD) experiments prior to electrochemical testing of cathode material were performed with the 9B high-resolution powder diffraction (HRPD) beamline of the Pohang accelerator laboratory (PAL) [21]. Pristine cathode material was also investigated using X-ray absorption near-edge spectroscopy (XANES) imaging measurements to reveal the local electronic structure. These measurements at the Mn K-, Co K-, and Ni K-edge were performed with the 7C X-ray nano imaging (XNI) beamline of the PAL. This beamline utilizes zone plate-based transmission X-ray nanoscopy, which is a kind of transmission X-ray microscopy (TXM), for image formation. A zone plate of diameter 150 µm and 40 nm outermost zone width was used for measurements. This arrangement gave a spatial resolution of 40 nm and a field of view (FOV) of around 50 µm. The X-ray absorption images based on TXM were captured at various energies within a 1 eV interval in the range −20 to 80 eV from the main edge energies of each respective element. The XANES spectrum was extracted from these X-ray absorption images [22].Soft XAS measurements of this cathode material at various charging and discharging states were performed with the 10D XAS-KIST beamline of the same laboratory in total electron yield (TEY) mode. The grating with 1100 grooves/mm was used to measure spectra at the Mn L-, Co L-, Ni L-, and O K-edges. The obtained spectra were background-subtracted and normalized with respect to the post-edge height [23]. Results and Discussion

show abstract

The study on nanostructural evolution of SnO2-carbon aerogel nanocomposite during the first discharge process

Wang

Liu

et al. 2021

Journal of Physics and Chemistry of Solids

View full text Add to dashboard Cite

In situelectrochemical synchrotron radiation for Li-ion batteries

Cited by 12 publications

References 104 publications

The Importance of Interphases in Energy Storage Devices: Methods and Strategies to Investigate and Control Interfacial Processes

The Importance of Interphases in Energy Storage Devices: Methods and Strategies to Investigate and Control Interfacial Processes

Soft X-ray Absorption Spectroscopic Investigation of Li(Ni0.8Co0.1Mn0.1)O2 Cathode Materials

The study on nanostructural evolution of SnO2-carbon aerogel nanocomposite during the first discharge process

Contact Info

Product

Resources

About