Inorganic Colloidal Electrolyte for Highly Robust Zinc‑Ion Batteries

作     者：Jiawei Gao Xuesong Xie Shuquan Liang Bingan Lu Jiang Zhou Jiawei Gao;Xuesong Xie;Shuquan Liang;Bingan Lu;Jiang Zhou

作者机构：School of Materials Science and EngineeringCentral South UniversityChangsha 410083People’s Republic of China School of Physics and ElectronicsHunan UniversityChangsha 410082People’s Republic of China Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan ProvinceCentral South UniversityChangsha 410083People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2021年第13卷第4期

页      面：247-258页

核心收录：

学科分类：0808[工学-电气工程] 081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：National Natural Science Foundation of China(Grant Nos.51972346,51932011,51922038,and 51672078) Hunan Outstanding Youth Talents(No.2019JJ20005) the Program of Youth Talent Support for Hunan Province(2020RC3011) Innovation-Driven Project of Central South University(No.2020CX024) 

主　　题：Zn-ion battery Palygorskite Inorganic Colloidal electrolyte Cycle stability 

摘      要：Zinc-ion batteries(ZIBs)is a promising electrical energy storage candidate due to its eco-friendliness,low cost,and intrinsic safety,but on the cathode the element dissolution and the formation of irreversible products,and on the anode the growth of dendrite as well as irreversible products hinder its practical ***,we propose a new type of the inorganic highly concentrated colloidal electrolytes(HCCE)for ZIBs promoting simultaneous robust protection of both cathode/anode leading to an effective suppression of element dissolution,dendrite,and irreversible products *** new HCCE has high Zn^(2+)ion transference number(0.64)endowed by the limitation of SO4^(2−),the competitive ion conductivity(1.1×10^(–2) S cm^(−1))and Zn2+ion diffusion enabled by the uniform pore distribution(3.6 nm)and the limited free *** Zn/HCCE/α-MnO2 cells exhibit high durability under both high and low current densities,which is almost 100%capacity retention at 200 mA g^(−1) after 400 cycles(290 mAh g^(−1))and 89%capacity retention under 500 mA g^(−1) after 1000 cycles(212 mAh g^(−1)).Considering material sustainability and batteries’high performances,the colloidal electrolyte may provide a feasible substitute beyond the liquid and all-solid-state electrolyte of ZIBs.