Electrochemical Doping and Structural Modulation of Conductive Metal‐Organic Frameworks

Zhou, ShengyangUppsala universitet,Nanoteknologi och funktionella material,College of Materials Science and Engineering Sichuan University Chengdu 610065 Sichuan China;Division of Nanotechnology and Functional Materials Department of Materials Sciences and Engineering The Ångström Laboratory Uppsala University Uppsala 751 03 Sweden (författare)

In this study, we introduce an electrochemical doping strategy aimed at manipulating the structure and composition of electrically conductive metal-organic frameworks (c-MOFs). Our methodology is exemplified through a representative c-MOF, Ni3(HITP)2 (HITP=2, 3, 6, 7, 10, 11-hexaiminotriphenylene), synthesized into porous thin films supported by nanocellulose. While the c-MOF exhibits characteristic capacitive behavior in neutral electrolyte; it manifests redox behaviors in both acidic and alkaline electrolytes. Evidence indicates that the organic ligands within c-MOF undergo oxidation (p-doping) and reduction (n-doping) when exposed to specific electrochemical potentials in acidic and alkaline electrolyte, respectively. Interestingly, the p-doping process proves reversible, with the c-MOF structure remaining stable across cyclic p-doping/de-doping. In contrast, the n-doping is irreversible, leading to the gradual decomposition of the framework into inorganic species over a few cycles. Drawing on these findings, we showcase the versatile electrochemical applications of c-MOFs and their derived composites, encompassing electrochemical energy storage, electrocatalysis, and ultrafast actuation. This study provides profound insights into the doping of c-MOFs, offering a new avenue for modulating their chemical and electronic structure, thereby broadening their potential for diverse electrochemical applications.

TEKNIK OCH TEKNOLOGIER Nanoteknik hsv//swe
ENGINEERING AND TECHNOLOGY Nano-technology hsv//eng
Engineering Science with specialization in Nanotechnology and Functional Materials
Teknisk fysik med inriktning mot nanoteknologi och funktionella material

Liu, TianqiInstitute of Wenzhou Zhejiang University Wenzhou 325006 China;Department of Chemistry KTH Royal Institute of Technology Stockholm 100 44 Sweden (författare)
Strömme, Maria,1970-Uppsala universitet,Nanoteknologi och funktionella material(Swepub:uu)mst26208 (författare)
Xu, Chao,Assistant Professor,1987-Uppsala universitet,Nanoteknologi och funktionella material,Division of Nanotechnology and Functional Materials Department of Materials Sciences and Engineering The Ångström Laboratory Uppsala University Uppsala 751 03 Sweden(Swepub:uu)chaxu519 (författare)
Uppsala universitetNanoteknologi och funktionella material (creator_code:org_t)

Av författaren/redakt...: Zhou, Shengyang; Liu, Tianqi; Strömme, Maria, ...; Xu, Chao, Assist ...

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.