Micro/nano-wrinkled elastomeric electrodes enabling high energy storage performance and various form factors  

作　　者：Changeun Yoo Seokmin Lee Yongkwon Song Woojae Chang Moon Kyu Park Younji Ko Jinhan Cho 

机构地区：[1]Department of Chemical and Biological Engineering,Korea University,Seoul,Seongbuk-gu,Republic of Korea [2]KU-KIST Graduate School of Converging Science and Technology,Korea University,Seoul,Seongbuk-gu,Republic of Korea [3]Soft Hybrid Materials Research Center,Advanced Materials Research Division,Korea Institute of Science and Technology(KIST),Seongbuk-gu,Seoul,Republic of Korea

出　　处：《Carbon Energy》2023年第12期137-152,共16页碳能源（英文）

基　　金：the National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT,Ministry of Science and ICT)(NRF-2021R1A2C3004151);Ministry of Education(NRF-2022R1A6A3A01086019);the KU-KIST School Program.

摘　　要：Stretchable elastomer-based electrodes are considered promising energy storage electrodes for next-generation wearable/flexible electronics requiring various shape designs.However,these elastomeric electrodes suffer from the limited electrical conductivity of current collectors,low charge storage capacities,poor interfacial interactions between elastomers and conductive/active materials,and lack of shape controllability.In this study,we report hierarchically micro/nano-wrinkle-structured elastomeric electrodes with notably high energy storage performance and good mechanical/electrochemical stabilities,simultaneously allowing various form factors.For this study,a swelling/deswelling-involved metal nanoparticle(NP)assembly is first performed on thiol-functionalized polydimethylsiloxane(PDMS)elastomers,generating a micro-wrinkled structure and a conductive seed layer for subsequent electrodeposition.After the assembly of metal NPs,the conformal electrodeposition of Ni and NiCo layered double hydroxides layers with a homogeneous nanostructure on the micro-wrinkled PDMS induces the formation of a micro/nano-wrinkled surface morphology with a large active surface area and high electrical conductivity.Based on this unique approach,the formed elastomeric electrodes show higher areal capacity and superior rate capability than conventional elastomeric electrodes while maintaining their electrical/electrochemical properties under external mechanical deformation.This notable mechanical/electrochemical performance can be further enhanced by using spiral-structured PDMS(stretchability of~500%)and porous-structured PDMS(areal capacity of~280μAh cm^(-2)).

关 键 词：elastomeric electrodes ELECTRODEPOSITION micro/nano-wrinkled structures 

分 类 号：TB383[一般工业技术—材料科学与工程]