首页|Ten-Minute Synthesis of a New Redox-Active Aqueous Binder for Flame-Retardant Li-S Batteries
Ten-Minute Synthesis of a New Redox-Active Aqueous Binder for Flame-Retardant Li-S Batteries
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As a critical role in battery systems,polymer binders have been shown to efficiently suppress the lithium polysulfide shuttling and accommodate volume changes in recent years.However,preparation processes and safety,as the key criterions for Li-S batteries'practical applications,still attract less attention.Herein,an aqueous multifunction binder(named PEI-TIC)is prepared via an easy and fast epoxy-amine ring-opening reaction(10 min),which can not only give the sulfur cathode a stable mechanical property,a strong chemical adsorption and catalytic conversion ability,but also a fire safety improvement.The Li-S batteries based on the PEI-TIC binder display a high discharge capacity(1297.8 mAh g-1),superior rate performance(823.0 mAh g-1 at 2 C),and an ultralow capacity decay rate of 0.035％over more than 800 cycles.Even under 7.1 mg cm-2 S-loaded,the PEI-TIC electrode can also achieve a high areal capacity of 7.2 mA h g-1 and excellent cycling stability,confirming its application potential.Moreover,it is also noted that TG-FTIR test is performed for the first time to explore the flame-retardant mechanism of polymer binders.This work provides an economically and environmentally friendly binder for the practical application and inspires the exploration of the flame-retardant mechanism of all electrode components.
3D cross-linked networkenvironmentally friendlyflame retardantLi-S batteriesmultifunction binder
Tianpeng Zhang、Borui Li、Zihui Song、Wanyuan Jiang、Siyang Liu、Runyue Mao、Xigao Jian、Fangyuan Hu
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School of Materials Science and Engineering,State Key Laboratory of Fine Chemicals,Frontiers Science Center for Smart Materials Oriented Chemical Engineering Technology Innovation Center of High Performance Resin Materials(Liaoning Province),Key Laboratory of Energy Materials and Devices(Liaoning Province),Dalian University of Technology,Dalian 116024,China
State Key Laboratory of Fine Chemicals,Frontiers Science Center for Smart Materials Oriented Chemical Engineering,School of Chemical Engineering Technology Innovation Center of High Performance Resin Materials(Liaoning Province),Key Laboratory of Energy Materials and Devices(Liaoning Province),Dalian University of Technology,Dalian 116024,China
State Key Laboratory of Fine Chemicals,Frontiers Science Center for Smart Materials Oriented Chemical Engineering,School of Chemical Engineering Technol
National Outstanding Youth Science Fund Project of National Natural Science Foundation of ChinaCNPC Innovation FundLiao Ning Revitalization Talents ProgramXinghai Talent Cultivation PlanFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities
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