The use of in-situ Raman spectroscopy in investigating carbon materials as anodes of alkali metal-ion batteries

Cheng, Xiaoqin; Li, Huijun; Zhao, Zhenxin; Wang, Yongzhen; Wang, Xiaomin

doi:10.1016/s1872-5805(21)60007-0

Cited by 37 publications

(23 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From Figure a,b, both the G and G@C anodes exhibit variational D (≈1350 cm −1 , nongraphitized peak, A 2g breathing modes of in‐plane graphene rings, Figure 4e) and G (≈1580 cm −1 , graphitized peak, high‐frequency E 2g phonon at Γ, Figure 4e) peaks during the charge‐discharge process. [ 22,23 ] The extremely strong background signal marked with a dashed elliptical ring in Figure 4b is attributed to the fluorescence effect associated with a short excitation wavelength (532 nm in this work).…”

Section: Resultsmentioning

confidence: 61%

Eliminating Graphite Exfoliation with an Artificial Solid Electrolyte Interphase for Stable Lithium‐Ion Batteries

Zhou

Lian

et al. 2022

Small

View full text Add to dashboard Cite

Although graphite materials with desirable comprehensive properties dominate the anode market of commercial lithium‐ion batteries (LIBs), their low capacity during fast charging precludes further commercialization. In the present work, natural graphite (G) is reported not only to suffer from low capacity during fast charging, but also from charge failure after many charging cycles. Using different characterization techniques, severe graphite exfoliation, and continuously increasing solid electrolyte interphase (SEI) are demonstrated as reasons for the failure of G samples. An ultrathin artificial SEI is proposed, addressing these problems effectively and ensuring extremely stable operation of the graphite anode, with a capacity retention of ≈97.5% after 400 cycles at 1 C. Such an artificial SEI modification strategy provides a universal approach to tailoring and designing better anode materials for next‐generation LIBs with high energy densities.

show abstract

Section: Resultsmentioning

confidence: 61%

Eliminating Graphite Exfoliation with an Artificial Solid Electrolyte Interphase for Stable Lithium‐Ion Batteries

Zhou

Lian

et al. 2022

Small

View full text Add to dashboard Cite

show abstract

“…These results suggest that sp 2 ‐hybridized carbon (as has been ascribed to D′ band broadening) located at the sheet edges interacts with adsorbed intermediates in this potential region. [ 230 ]…”

Section: Characterization Of N‐doped Carbon‐based Oxygen Electrocatal...mentioning

confidence: 99%

Nitrogen‐Rich Carbonaceous Materials for Advanced Oxygen Electrocatalysis: Synthesis, Characterization, and Activity of Nitrogen Sites

Meng

Morales

et al. 2022

Adv Funct Materials

104

View full text Add to dashboard Cite

Nitrogen‐doped carbons are among the fastest‐growing class of materials used for oxygen electrocatalysis, namely, the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), thanks to their low cost, environmental friendliness, excellent electrical conductivity, and scalable synthesis. The perspective of replacing precious metal‐based electrocatalysts with nitrogen‐doped carbon is highly desirable for reducing costs in energy conversion and storage systems. In this review, the role of nitrogen and N‐induced structural defects on the enhanced performance of N‐doped carbon electrocatalysts toward the OER and the ORR as well as their applications for energy conversion and storage technologies is summarized. The synthesis of N‐doped carbon electrocatalysts and the characterization of their nitrogen functional groups and active sites for the conversion of oxygen are also reviewed. The electrocatalytic performance of the main types of N‐doped carbon materials for OER/ORR electrocatalysis are then discussed. Finally, major challenges and future opportunities of N‐doped carbons as advanced oxygen electrocatalysts are highlighted.

show abstract

“…[ 104 ] Moreover, considering the optical penetration depth, it is essential to select laser excitation line with high wavelength to enhance the conductivity and thus detect the electrode materials for PIBs in depth. [ 105 ] The investigated electrode materials via in situ Raman are usually in a wide range, while the in situ Raman performs better for carbon materials to discuss in detail in the ratio of D/G peaks, the disordering characteristic and G band split. The real‐time K + insertion into carbon materials using in situ Raman provides valuable information to modify the electrodes.…”

Section: In Situ Characterization Techniquesmentioning

confidence: 99%

In‐Depth Mechanism Understanding for Potassium‐Ion Batteries by Electroanalytical Methods and Advanced In Situ Characterization Techniques

Liu

Yong

et al. 2021

Small Methods

View full text Add to dashboard Cite

show abstract

The use of in-situ Raman spectroscopy in investigating carbon materials as anodes of alkali metal-ion batteries

Cited by 37 publications

References 65 publications

Eliminating Graphite Exfoliation with an Artificial Solid Electrolyte Interphase for Stable Lithium‐Ion Batteries

Eliminating Graphite Exfoliation with an Artificial Solid Electrolyte Interphase for Stable Lithium‐Ion Batteries

Nitrogen‐Rich Carbonaceous Materials for Advanced Oxygen Electrocatalysis: Synthesis, Characterization, and Activity of Nitrogen Sites

In‐Depth Mechanism Understanding for Potassium‐Ion Batteries by Electroanalytical Methods and Advanced In Situ Characterization Techniques

Contact Info

Product

Resources

About