Reactivity of rice husk-derived lithium silicates followed by in situ Raman spectroscopy

Crystallographic Engineering in Micron-Sized SiO x Anode Material Toward Stable High-Energy-Density Lithium-Ion Batteries

“…The same trend is presented in the Raman shift at around 940 cm −1 , belonging to the second-order optical phonons of c-Si, while the asymmetric expansion toward lower wavenumbers, 475 cm −1 , corresponding to the transverse optical mode of Si−Si bonds, weakens. 37,38 Raman spectroscopy (Figure 1g) also confirms the presence of coated carbon with characteristic D (1320 cm −1 , induced by disorder) and G bands (1585 cm −1 , consistent with the vibration of sp 2 carbon), respectively. 39−41 Fourier transform infrared spectroscopy (FTIR) was used to characterize the bonding states of the short-range ordered Si− O structure in the matrix (Figure 1h).…”

Crystallographic Engineering in Micron-Sized SiO x Anode Material Toward Stable High-Energy-Density Lithium-Ion Batteries

“…The same trend is presented in the Raman shift at around 940 cm −1 , belonging to the second-order optical phonons of c-Si, while the asymmetric expansion toward lower wavenumbers, 475 cm −1 , corresponding to the transverse optical mode of Si−Si bonds, weakens. 37,38 Raman spectroscopy (Figure 1g) also confirms the presence of coated carbon with characteristic D (1320 cm −1 , induced by disorder) and G bands (1585 cm −1 , consistent with the vibration of sp 2 carbon), respectively. 39−41 Fourier transform infrared spectroscopy (FTIR) was used to characterize the bonding states of the short-range ordered Si− O structure in the matrix (Figure 1h).…”

A Si@SiOC@Li 2 Si 2 O 5 anode derived from pyrolysis of polysiloxane enables lithium-ion batteries to exhibit high electrochemical performance and high initial coulombic efficiency

“…43 The weak peak at 585 cm −1 in the Raman spectrogram of SSL corresponds to Li 2 Si 2 O 5 , which conrms the formation of oligocrystalline Li 2 Si 2 O 5 . 64 Micro-morphologies of pre-SiOC, SiOC, SSS, and SSL were studied as shown in Fig. 2.…”

“…43 The weak peak at 585 cm −1 in the Raman spectrogram of SSL corresponds to Li 2 Si 2 O 5 , which confirms the formation of oligocrystalline Li 2 Si 2 O 5 . 64…”

Tailoring of Waste‐Derived CO 2 Adsorbents From the Perspective of Apparent and Intrinsic Property Regulation

“…4.2.1.1 | Chemical-Assisted Routes. Chemical supplementa- tion remains the most widely adopted route for lithium silicate synthesis because of its procedural simplicity and high controllability [125,126]. Various Si-rich wastes have been investigated as potential Si sources, including agricultural residues such as rice husk ash [107] and sugarcane bagasse, as well as industrial by-products such as steel slag, coal slag, and fly ash [110].…”

Crystallographic Engineering in Micron-Sized SiO x Anode Material Toward Stable High-Energy-Density Lithium-Ion Batteries

“…The same trend is presented in the Raman shift at around 940 cm −1 , belonging to the second-order optical phonons of c-Si, while the asymmetric expansion toward lower wavenumbers, 475 cm −1 , corresponding to the transverse optical mode of Si−Si bonds, weakens. 37,38 Raman spectroscopy (Figure 1g) also confirms the presence of coated carbon with characteristic D (1320 cm −1 , induced by disorder) and G bands (1585 cm −1 , consistent with the vibration of sp 2 carbon), respectively. 39−41 Fourier transform infrared spectroscopy (FTIR) was used to characterize the bonding states of the short-range ordered Si− O structure in the matrix (Figure 1h).…”

A Si@SiOC@Li 2 Si 2 O 5 anode derived from pyrolysis of polysiloxane enables lithium-ion batteries to exhibit high electrochemical performance and high initial coulombic efficiency

“…43 The weak peak at 585 cm −1 in the Raman spectrogram of SSL corresponds to Li 2 Si 2 O 5 , which conrms the formation of oligocrystalline Li 2 Si 2 O 5 . 64 Micro-morphologies of pre-SiOC, SiOC, SSS, and SSL were studied as shown in Fig. 2.…”

“…43 The weak peak at 585 cm −1 in the Raman spectrogram of SSL corresponds to Li 2 Si 2 O 5 , which confirms the formation of oligocrystalline Li 2 Si 2 O 5 . 64…”

Tailoring of Waste‐Derived CO 2 Adsorbents From the Perspective of Apparent and Intrinsic Property Regulation

“…4.2.1.1 | Chemical-Assisted Routes. Chemical supplementa- tion remains the most widely adopted route for lithium silicate synthesis because of its procedural simplicity and high controllability [125,126]. Various Si-rich wastes have been investigated as potential Si sources, including agricultural residues such as rice husk ash [107] and sugarcane bagasse, as well as industrial by-products such as steel slag, coal slag, and fly ash [110].…”

Crystallographic Engineering in Micron-Sized SiO x Anode Material Toward Stable High-Energy-Density Lithium-Ion Batteries

“…The same trend is presented in the Raman shift at around 940 cm −1 , belonging to the second-order optical phonons of c-Si, while the asymmetric expansion toward lower wavenumbers, 475 cm −1 , corresponding to the transverse optical mode of Si−Si bonds, weakens. 37,38 Raman spectroscopy (Figure 1g) also confirms the presence of coated carbon with characteristic D (1320 cm −1 , induced by disorder) and G bands (1585 cm −1 , consistent with the vibration of sp 2 carbon), respectively. 39−41 Fourier transform infrared spectroscopy (FTIR) was used to characterize the bonding states of the short-range ordered Si− O structure in the matrix (Figure 1h).…”

A Si@SiOC@Li 2 Si 2 O 5 anode derived from pyrolysis of polysiloxane enables lithium-ion batteries to exhibit high electrochemical performance and high initial coulombic efficiency

“…43 The weak peak at 585 cm −1 in the Raman spectrogram of SSL corresponds to Li 2 Si 2 O 5 , which conrms the formation of oligocrystalline Li 2 Si 2 O 5 . 64 Micro-morphologies of pre-SiOC, SiOC, SSS, and SSL were studied as shown in Fig. 2.…”

“…43 The weak peak at 585 cm −1 in the Raman spectrogram of SSL corresponds to Li 2 Si 2 O 5 , which confirms the formation of oligocrystalline Li 2 Si 2 O 5 . 64…”

Tailoring of Waste‐Derived CO 2 Adsorbents From the Perspective of Apparent and Intrinsic Property Regulation

“…4.2.1.1 | Chemical-Assisted Routes. Chemical supplementa- tion remains the most widely adopted route for lithium silicate synthesis because of its procedural simplicity and high controllability [125,126]. Various Si-rich wastes have been investigated as potential Si sources, including agricultural residues such as rice husk ash [107] and sugarcane bagasse, as well as industrial by-products such as steel slag, coal slag, and fly ash [110].…”