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A nanocellulose-mediated, multiscale ion-sieving separator with selective Zn2+ channels for durable aqueous zinc-based batteries by Ying Zhang; Zhi Zeng; Shanchen Yang; Yaxin Zhang; Yue Ma; Zhaohui Wang is a nonfiction available to read on EtoBox.

What is A nanocellulose-mediated, multiscale ion-sieving separator with selective Zn2+ channels for durable aqueous zinc-based batteries about?

A heterostructure engineered, multiscale ion-sieving separator with desired macro‐meso-molecular pores that can render selective Zn2+ permeability and homogeneous Zn2+ distribution at the separator-electrode interface is designed to achieve durable aqueous Zn-ion batteries. The proposed separator is fabricated by stacking an intermediate nanocellulose layer and a poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) upper layer on a glass fiber substrate, wherein the nanocellulose layer contains uniform mesopores favoring a homogeneous Zn2+ flux and endowing the attainment of a PEDOT:PSS layer. While the PEDOT:PSS layer features intrinsic ionic/electronic conductivity and rich sulfonate groups enabling uniform electrical field distribution and inhibiting anions migration. The combination of mesoporous nanocellulose and cation-permeable PEDOT:PSS used in the heterostructure separator yields a high ionic transference number and fast Zn2+ desolvation kinetics. This unique separator enables highly compact and dendrite-free Zn deposition at 4 mA cm−2/8 mAh cm−2, and sustains the symmetric Zn||Zn cell over 400 h at 10 mA cm−2/4 mAh cm−2. Such advantages bring remarkable reve

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Author

Ying Zhang; Zhi Zeng; Shanchen Yang; Yaxin Zhang; Yue Ma; Zhaohui Wang

Publisher

Elsevier BV

Published

2023

Language

EN

Category

nonfiction