In the majority of rechargeable batteries including lithium-ion batteries,polyvinylidene fluoride(PVdF)binders are the most commonly used binder for both anode and cathode.However,using PVdF binder requires the organi...In the majority of rechargeable batteries including lithium-ion batteries,polyvinylidene fluoride(PVdF)binders are the most commonly used binder for both anode and cathode.However,using PVdF binder requires the organic solvent of N-methyl-2-pyrrolidone which is expensive,volatile,combustible,toxic,and has poor recyclability.Therefore,switching to aqueous electrode processing routes with non-toxic binders would provide a great leap forward towards the realization of ideally fully sustainable and environmentally friendly electrochemical energy storage devices.Various water-soluble binders(aqueous binders)were characterized and compared to the performance of conventional PVdF.Our study demonstrates that the electrochemical performance of Zn/MnO_(2) aqueous batteries is significantly improved by using sodium carboxymethyl cellulose(CMC)binder.In addition,CMC binders offer desirable adhesion,good wettability,homogeneous material distribution,and strong chemical stability at certain pH levels(3.5-5)without any decomposition for long-cycle life.展开更多
基金the U.S.Department of Energy(DOE)Office of Electricity under contract No.57558PNNL is an operated by Battelle Memorial Institute for the DOE under contract DE-AC05-76RL01830.
文摘In the majority of rechargeable batteries including lithium-ion batteries,polyvinylidene fluoride(PVdF)binders are the most commonly used binder for both anode and cathode.However,using PVdF binder requires the organic solvent of N-methyl-2-pyrrolidone which is expensive,volatile,combustible,toxic,and has poor recyclability.Therefore,switching to aqueous electrode processing routes with non-toxic binders would provide a great leap forward towards the realization of ideally fully sustainable and environmentally friendly electrochemical energy storage devices.Various water-soluble binders(aqueous binders)were characterized and compared to the performance of conventional PVdF.Our study demonstrates that the electrochemical performance of Zn/MnO_(2) aqueous batteries is significantly improved by using sodium carboxymethyl cellulose(CMC)binder.In addition,CMC binders offer desirable adhesion,good wettability,homogeneous material distribution,and strong chemical stability at certain pH levels(3.5-5)without any decomposition for long-cycle life.
