High Na-ion conductivity andmechanical integrity of anion-exchanged polymeric hydrogel electrolytes for flexible sodium ion hybrid energy storage  

作　　者：JungWoo Hong Harpalsinh H.Rana Jeong Hee Park Jun Su Kim Sang Joon Lee Gun Jang Tae Hoon Kang Kang Ho Shin Sang Ha Baek Wooseok Yang Kwang Ho Kim Ju-Hyuk Lee Ho Seok Park 

机构地区：[1]School of Chemical Engineering,Sungkyunkwan University,Suwon,Republic of Korea [2]Clean Energy Research Center,Korea Institute of Science and Technology(KIST),Seoul,Republic of Korea [3]KIST-SKKU Carbon-Neutral Research Center,Sungkyunkwan University(SKKU),Suwon,Republic of Korea [4]SKKU Institute of Energy Science and Technology(SIEST),Sungkyunkwan University,Suwon,Republic of Korea [5]COSMOS LAB/92,Jomaru-ro 385beon-gil,Bucheon-si,Republic of Korea [6]SKKU Advanced Institute of Nano Technology(SAINT),Sungkyunkwan University,Suwon,Republic of Korea [7]Department of Health Sciences and Technology,Samsung Advanced Institute for Health Sciences and Technology(SAIHST),Sungkyunkwan University,Suwon,Republic of Korea

出　　处：《SusMat》2024年第1期140-153,共14页可持续发展材料（英文）

基　　金：National Research Foundation,Grant/Award Number:NRF-2020R1A3B2079803;Korea Institute for Advancement of Technology,Grant/Award Number:P0026069。

摘　　要：The polymeric gel electrolytes are attractive owing to their higher ionic conductivities than those of dry polymer electrolytes and lowered water activity for enlarged potential window.However,the ionic conductivity and mechanical strength of the Na-ion conducting polymeric gel electrolytes are limited by below 20 mS cm−1 and 2.2 MPa.Herein,we demonstrate Na-ion conducting and flexible polymeric hydrogel electrolytes of the chemically coupled poly(diallyldimethylammonium chloride)-dextrin-N,N′-methylene-bisacrylamide film immersed in NaClO_(4) solution(ex-DDA-Dex+NaClO_(4))for flexible sodium-ion hybrid capacitors(f-NIHC).In particular,the anion exchange reaction and synergistic interaction of ex-DDA-Dex with the optimum ClO_(4)−enable to greatly improve the ionic conductivity up to 27.63 mS cm−1 at 25◦C and electrochemical stability window up to 2.6 V,whereas the double networking structure leads to achieve both the mechanical strength(7.48 MPa)and softness of hydrogel electrolytes.Therefore,the f-NIHCs with the ex-DDA-Dex+NaClO_(4) achieved high specific and high-rate capacities of 192.04 F g^(−1)at 500 mA g^(−1)and 116.06 F g^(−1)at 10000 mA g^(−1),respectively,delivering a large energy density of 120.03Wh kg^(−1)at 906Wkg^(−1)and long cyclability of 70%over 500 cycles as well as demonstrating functional operation under mechanical stresses.

关 键 词：anion exchange chemistry flexible energy storage hybrid energy storage hydrogel electrolytes renewable electrolytes sodium storage 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ427.26[化学工程]