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Clarification of the dispersion mechanism of three typical chemical dispersants in lithium-ion battery (LIB) slurry

Particuology 2023年第9期80卷 90-102页

作者： Zhilong Wang Zehua Wang Xiaodong Liu Xiayi Liu Tong Zhao Masahiro Takei Faculty of Mechanical and Precision Instrument Engineering Xi'an University of TechnologyXi'an710048China Division of Artificial Systems Science Graduate School of EngineeringChiba UniversityChiba2638522Japan

This paper mainly clarified the dispersion mechanism of three typical chemical dispersants which are polyethylene glycol octylphenyl ether(Triton X-100,T-100),polyethylene pyrrolidone(PVP)and carboxymethyl cellulose(CMC)within lithium-ion battery(LIB)***,the optimum amounts of T-100,PVP and CMC are selected from 0%,0.5%,1.5%and 2.5%by evaluating the impedance of LIB slurry in the case of adding each typical chemical dispersant with EIS ***,the impedance spectrum of three different slurry samples which are PVDF-NMP solution,LiCoO_(2) slurry and Carbon Black(CB)slurry with the optimum amount of each dispersant are also *** using SEM and C element distribution images of LIB slurry to verify the correctness of the dispersion mechanism of each dispersant,it is concluded that the dispersion CMC with its optimum amount 1.5%is the best one to promote the formation of conductive paths and CB-coated LiCoO_(2) network structure within LIB slurry,which has the considerably potential to improve the performance of LIB.

关键词： Lithium-ion battery(LIB)slurry chemical dispersants Electrochemical characterizations Electrical impedance spectroscopy(EIS)

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Effect of subsea dispersant application on deepwater oil spill in the South China Sea

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Journal of Oceanology and Limnology 2022年第3期40卷 950-968页

作者： Haibo CHEN CAS Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China Pilot National Laboratory for Marine Science and Technology(Qingdao) Qingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

There are considerable amounts of off shore oil/gas fields in the South China Sea(SCS),and for potential oil spill events in this area,dispersants may provide a reliable large-scale response when the preferable option of recapturing the oil cannot be *** this paper,effect of chemical dispersants on underwater oil transport is investigated with an underwater oil spill *** the model is an adaption of an existing one,we first calibrate it by comparing the model result with echo-sounder data that were observed during the“DeepSpill”experiment with crude oil/LNG(liquefied natural gas)***,with the hydrodynamic data provided by an operational forecasting system and the drilling data obtained from off shore platforms in the SCS,we apply the model to a hypothetical spill case,and examine the difference in oil distribution in water column caused by subsea dispersant *** model results can provide valuable reference for contingency plan makers to make an efficient emergency response to potential underwater oil spill accidents in the SCS.

关键词： underwater oil spill numerical simulation chemical dispersants South China Sea contingency planning

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