Repository logo
 
Publication

Novel Quasi‐Liquid K‐Na Alloy as a Promising Dendrite‐Free Anode for Rechargeable Potassium Metal Batteries

2021-06-25Journal article Open access
Simple item page
dc.contributor.authorTai, Zhixin
dc.contributor.authorLi, Yi
dc.contributor.authorLiu, Yajie
dc.contributor.authorZhao, Lanling
dc.contributor.authorDing, Yu
dc.contributor.authorLu, Ziyu
dc.contributor.authorPeng, Zhijian
dc.contributor.authorMeng, Lijian
dc.contributor.authorYu, Guihua
dc.contributor.authorLiu, Lifeng
dc.date.accessioned2021-07-20T14:53:20Z
dc.date.available2021-07-20T14:53:20Z
dc.date.issued2021-06-25
dc.description.abstractRechargeable potassium metal batteries are promising energy storage devices with potentially high energy density and markedly low cost. However, eliminating dendrite growth and achieving a stable electrode/electrolyte interface are the key challenges to tackle. Herein, a novel "quasi-liquid" potassium-sodium alloy (KNA) anode comprising only 3.5 wt% sodium (KNA-3.5) is reported, which exhibits outstanding electrochemical performance able to be reversibly cycled at 4 mA cm-2 for 2000 h. Moreover, it is demonstrated that adding a small amount of sodium hexafluorophosphate (NaPF6 ) into the potassium bis(fluorosulfonyl)imide electrolyte allows for the formation of the "quasi-liquid" KNA on electrode surface. Comprehensive experimental studies reveal the formation of an unusual metastable KNa2 phase during plating, which is believed to facilitate simultaneous nucleation and suppress the growth of dendrites, thereby improving the electrode's cycle lifetime. The "quasi-liquid" KNA-3.5 anode demonstrates markedly enhanced electrochemical performance in a full cell when pairing with Prussian blue analogs or sodium rhodizonate dibasic as the cathode material, compared to the pristine potassium anode. Importantly, unlike the liquid KNA reported before, the "quasi-liquid" KNA-3.5 exhibits good processability and can be readily shaped into sheet electrodes, showing substantial promise as a dendrite-free anode in rechargeable potassium metal batteries.pt_PT
dc.description.sponsorshipZ.T. acknowledges the financial support of Maria Curie COFUND fellowship (Grant No. 713640). Z.L. thanks the financial support of China Scholarship Council (Grant No. 201 806 400 066). This project was partly funded by the “Baterias 2030” project through the Mobilizadore Programme by the National Innovation Agency of Portugal (Grant No. POCI-01-0247- FEDER-046109). G.Y. acknowledges the financial support from the Welch Foundation Award F-1861. The authors thank Dr. Artur Martins for his assistance in mechanical property measurement.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1002/advs.202101866pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/18140
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relationPOCI-01-0247-FEDER-046109pt_PT
dc.relationINL Fellowship programme in nanotechnologies for nanomedicine, energy, ICT, food and environment applications
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/10.1002/advs.202101866pt_PT
dc.titleNovel Quasi‐Liquid K‐Na Alloy as a Promising Dendrite‐Free Anode for Rechargeable Potassium Metal Batteriespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleINL Fellowship programme in nanotechnologies for nanomedicine, energy, ICT, food and environment applications
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/713640/EU
oaire.citation.startPage2101866pt_PT
oaire.citation.titleAdvanced Sciencept_PT
oaire.fundingStreamH2020
person.familyNameMeng
person.givenNameLijian
person.identifier236430
person.identifier.ciencia-idC31B-0091-BD12
person.identifier.orcid0000-0001-6071-3502
person.identifier.scopus-author-id7202236050
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationcb02ae05-0786-47ff-b480-2fde7ef93e0d
relation.isAuthorOfPublication.latestForDiscoverycb02ae05-0786-47ff-b480-2fde7ef93e0d
relation.isProjectOfPublicationcbedaf7f-9dfb-4f72-97dc-f7d56405958a
relation.isProjectOfPublication.latestForDiscoverycbedaf7f-9dfb-4f72-97dc-f7d56405958a

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
ART2_DFI_Lijian_2021.pdf
Size:
1.97 MB
Format:
Adobe Portable Document Format
Download

Collections

ISEP – DFI – Artigos