Hollow urchin-shaped NCM811 ternary-structure for high rate charge/discharge capability and efficient CO2 adsorption

Yang, Fan-Ming; Zhou, Xianchao; Li, Xida; Yi, Zhi-Cheng; Ren, Feng; He, Guo-Wen

doi:10.1016/j.jece.2023.109445

Cited by 4 publications

(12 citation statements)

References 107 publications

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“…(3) While the concentration of CO 2 on the surface of PEI(25)/Zr (0.1) -KIT-6 per unit time rises rapidly, the contact time between CO 2 and the basic sites declines gradually. Hence, there is an enhancement of the average adsorption rate. , L a = 2 ( t normale − t normalb ) t e + t b …”

Section: Resultsmentioning

confidence: 99%

“…In the present work, a quasi first-order kinetic model, a quasi second-order kinetic model, the Elovich equation, and the Bangham equation were used to investigate the kinetic properties of CO 2 adsorption on PEI( n )/Zr 0.1 -KIT-6. Information on the models is displayed as follows: Quasi first-order kinetic model In ( q normale − q t ) = In 0.25em q e − k 1 t Quasi second-order kinetic model t q t = 1 k 2 q e 2 + t q normale Elovich equation q t = 1 β normalE In ( α normalE β normalE ) + 1 β normalE In ( t ) Bangham equation q t = q e − q normale normale k t z where t is adsorption time. k 1 and k 2 are adsorption rate constants in the quasi first-order kinetic model and quasi second-order kinetic model.…”

Section: Resultsmentioning

confidence: 99%

“…Similar to the previous works, ,− CO 2 adsorption experiments were conducted over a self-built equipment, which is shown in Scheme S1. First, the impurities (CO 2 , moisture, and other gases) adsorbed on the surface were removed by exposing the adsorbate to a stream of Ar flow (100 mL/min) at 100 °C for 2 h. The impurities must be removed based on the following reasons: ① porous materials are good agents for the storage of these impurities.…”

Section: Methodsmentioning

confidence: 96%

“…Nowadays, CO 2 emission reduction is attracting worldwide concern as a result of the sharply increasing CO 2 concentration in air. To achieve this target, the whole world is advocating the “double carbon” project: “carbon peak and carbon neutral” . The realization of this project is dependent on the development of CO 2 capture technologies.…”

Section: Introductionmentioning

confidence: 99%

“…In this field, CO 2 absorption and CO 2 adsorption are the main techniques. However, CO 2 absorption is limited on account of the strong corrosion and high energy consumption. − Nowadays, CO 2 adsorption is becoming a promising method on the basis of the large adsorption capacity and low corrosion. − Moreover, a great number of adsorbents, such as lithium salts, , metal oxides, ,− silica-based molecular sieves, − carbon materials, − bimetallic materials, metal–organic framework (MOF) materials, − polymers, , and ionic liquids, , are designed for efficient CO 2 adsorption. Among them, N-based porous materials are good candidates based on the excellent pore structure and the considerable content of amine groups. − …”

Section: Introductionmentioning

confidence: 99%

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Carbon Dioxide Adsorption Performance and the Kinetic Properties of the Zirconium and Poly(ethyleneimine) Bifunctionalized Molecular Sieve of KIT-6

Liao,

Long,

Zou

et al. 2023

Energy Fuels

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Porous materials of PEI(n)/Zr(N)-KIT-6 were prepared by doping zirconium to the KIT-6 framework and introducing poly(ethylenimine) (PEI) to the pore channels (n is the weight percentage of PEI to Zr(N)-KIT-6, and N is the molar ratio of Zr/Si). The adsorbents were characterized and tested at a 20% CO2 concentration to investigate the influence of Zr and PEI on CO2 adsorption. The results display that Zr–O–Si bonds are formed after the doping of Zr species. In addition, PEI is loaded on the surface through the formation of hydrogen bonds and Zr–N bonds. The synthesized PEI(n)/Zr(N)-KIT-6 materials keep stable when the temperature is lower than 210 °C. In addition, the materials exhibit good CO2 adsorption performance, which is attributed to the existence of Zr and PEI. The Lewis acidity of KIT-6 is improved after the doping of Zr heteroatoms, leading to the immobilization of more PEI and the enhancement of CO2 adsorption properties. The adsorption includes two steps: diffusion of CO2 in the pore channels and the reaction between CO2 and amine groups. When the gas flow rate is 40 mL/min, the maximum CO2 adsorption capacity of 174.7 mg/g is achieved. After 20 cycles, the adsorption value keeps stable.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Carbon Dioxide Adsorption Performance and the Kinetic Properties of the Zirconium and Poly(ethyleneimine) Bifunctionalized Molecular Sieve of KIT-6

Liao,

Long,

Zou

et al. 2023

Energy Fuels

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Sustainable preparation of hierarchical porous carbon from discarded shells of crustaceans for efficient CO2 capture

Shao,

Wang,

et al. 2024

Fuel

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A Study on the Microstructure Regulation Effect of Niobium Doping on LiNi0.88Co0.05Mn0.07O2 and the Electrochemical Performance of the Composite Material under High Voltage

Xu,

Liu,

Wang

et al. 2024

Materials

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High-nickel ternary materials are currently the most promising lithium battery cathode materials due to their development and application potential. Nevertheless, these materials encounter challenges like cation mixing, lattice oxygen loss, interfacial reactions, and microcracks. These issues are exacerbated at high voltages, compromising their cyclic stability and safety. In this study, we successfully prepared Nb5+-doped high-nickel ternary cathode materials via a high-temperature solid-phase method. We investigated the impact of Nb5+ doping on the microstructure and electrochemical properties of LiNi0.88Co0.05Mn0.07O2 ternary cathode materials by varying the amount of Nb2O5 added. The experimental results suggest that Nb5+ doping does not alter the crystal structure but modifies the particle morphology, yielding radially distributed, elongated, rod-like structures. This morphology effectively mitigates the anisotropic volume changes during cycling, thereby bolstering the material’s cyclic stability. The material exhibits a discharge capacity of 224.4 mAh g−1 at 0.1C and 200.3 mAh g−1 at 1C, within a voltage range of 2.7 V–4.5 V. Following 100 cycles at 1C, the capacity retention rate maintains a high level of 92.9%, highlighting the material’s remarkable capacity retention and cyclic stability under high-voltage conditions. The enhancement of cyclic stability is primarily due to the synergistic effects caused by Nb5+ doping. Nb5+ modifies the particle morphology, thereby mitigating the formation of microcracks. The formation of high-energy Nb-O bonds prevents oxygen precipitation at high voltages, minimizes the irreversibility of the H2–H3 phase transition, and thereby enhances the stability of the composite material at high voltages.

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Hollow urchin-shaped NCM811 ternary-structure for high rate charge/discharge capability and efficient CO2 adsorption

Cited by 4 publications

References 107 publications

Carbon Dioxide Adsorption Performance and the Kinetic Properties of the Zirconium and Poly(ethyleneimine) Bifunctionalized Molecular Sieve of KIT-6

Carbon Dioxide Adsorption Performance and the Kinetic Properties of the Zirconium and Poly(ethyleneimine) Bifunctionalized Molecular Sieve of KIT-6

Sustainable preparation of hierarchical porous carbon from discarded shells of crustaceans for efficient CO2 capture

A Study on the Microstructure Regulation Effect of Niobium Doping on LiNi0.88Co0.05Mn0.07O2 and the Electrochemical Performance of the Composite Material under High Voltage

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