Study on Raman Spectroscopy and Purification of B-C-N Compound

Li, Dongxu; Lu, Jing; Tian, Yongjun

doi:10.1007/s11661-011-0819-4

Cited by 5 publications

(3 citation statements)

References 25 publications

(18 reference statements)

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“…We consider the stress caused by diffusion within a spherical particle of radius R. The bulk of the spherical particle is assumed to be an isotropic linear elastic solid. Using the analogy between thermal and DIS, [32][33][34][35][36][37][38] the stress-strain relationships, expressed in the spherical coordinate system, for the radial and tangential components are…”

Section: Solid Mechanics and Dismentioning

confidence: 99%

Diffusion-Induced Stress, Interfacial Charge Transfer, and Criteria for Avoiding Crack Initiation of Electrode Particles

Cheng

Verbrugge

2010

J. Electrochem. Soc.

202

135

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Most lithium-ion battery electrodes experience large volume changes caused by concentration changes within the host particles during charging and discharging. Electrode failure, in the form of fracture or decrepitation, can occur as a result of repeated volume changes. In this work, we first develop analytic solutions for the evolution of concentration and stresses within a spherical electrode element under charging–discharging conditions when the system thermodynamics are ideal (e.g., no repulsion forces are significant between intercalate species). Both interfacial (electrochemical) kinetics and intercalate diffusion are comprehended. Based on the analytic solutions, we propose tensile stress-based criteria for the initiation of cracks within a spherical insertion electrode. These criteria may help guide the development of new materials for lithium-ion batteries with enhanced mechanical durability and identify battery operating conditions that, when maintained, keep the mechanical stresses below acceptable values, thereby increasing cell life.

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Section: Solid Mechanics and Dismentioning

confidence: 99%

Diffusion-Induced Stress, Interfacial Charge Transfer, and Criteria for Avoiding Crack Initiation of Electrode Particles

Cheng

Verbrugge

2010

J. Electrochem. Soc.

202

135

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“…The Fourier transform infrared (FTIR) spectra of BCN samples were collected to investigate the common features of as-prepared BCN samples under different temperatures ( Figure 1 ). The absorption peaks at 792 and 1386 cm −1 are attributed to the bending vibration of out-of-plane B–N–B and transverse stretching vibration of in-plane B–N bonds in all samples [ 13 , 14 ]. The small absorption peaks at 1086 and 1613 cm −1 correspond to the B–C vibrations and sp 2 C–N bonds [ 15 , 16 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of “Ravine-Like” BCN Compounds with High Capacitance

Chen

Huang

et al. 2018

Materials

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A series of “ravine-like” boron carbonitrides (abbreviation: BCN) were synthesized by a green precursor pyrolysis method at different temperatures (about 700–1100 °C). The highest electrochemical performance of BCN-800 (Named BCN-temperature) electrode was observed, because the “ravine-like” structure can significantly increase the contact area and improve the wettability between electrode and electrolyte. The BCN electrode exhibited ultrahigh specific capacitance 805.9 F/g (at a current density of 0.2 A/g), excellent rate capability, and good cycling stability (91%) after 3000 cycles at a current density of 8 A/g, showing high potential applications in supercapacitors.

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“…The volumetric strain ε ୢ୧୳ୱ୧୭୬ created by Li diffusion is 34,37 ε ୢ୧୳ୱ୧୭୬ = cΩ The volumetric strain ε ୢ୧୳ୱ୧୭୬ created by Li diffusion is 34,37 ε ୢ୧୳ୱ୧୭୬ = cΩ…”

Section: Electrochemical Reaction Induced Stresses In Spherical Electmentioning

confidence: 99%

Interaction between dislocation mechanics on diffusion induced stress and electrochemical reaction in a spherical lithium ion battery electrode

et al. 2015

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The effect of coupling dislocation induced stress with electrochemical reaction in a spherical battery electrode is investigated in this paper. A new coupled model among diffusion, dislocation, reversible electrochemical reaction is established by combining diffusion induced stress (DIS), dislocation induced stress and the forward reaction induced stress in the spherical electrode. The results of our model show that the interaction between dislocation induced stress and the forward reaction induced stress plays a significant role in decreasing the tensile stress and even the tensile state can be turned into the compressive stress, which may become a resistance to fracture and decrepitation due to DIS. However, the electrochemical reaction will result in the surface tangential stresses sharply increase with a larger relative rate of reaction and diffusion. Therefore, we provide a new theoretical method to explain the volume change and understand the stress evolution in the electrode.

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Study on Raman Spectroscopy and Purification of B-C-N Compound

Cited by 5 publications

References 25 publications

Diffusion-Induced Stress, Interfacial Charge Transfer, and Criteria for Avoiding Crack Initiation of Electrode Particles

Diffusion-Induced Stress, Interfacial Charge Transfer, and Criteria for Avoiding Crack Initiation of Electrode Particles

Synthesis and Characterization of “Ravine-Like” BCN Compounds with High Capacitance

Interaction between dislocation mechanics on diffusion induced stress and electrochemical reaction in a spherical lithium ion battery electrode

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