Strain and Deformation Drive Efficient Hydrogen Evolution for Adjustable Solid Mg-Moisture Battery

Open AccessCCS ChemistryRESEARCH ARTICLES23 Feb 2025Strain and Deformation Drive Efficient Hydrogen Evolution for Adjustable Solid Mg-Moisture Battery Xinlong Fu, Changshui Huang, Yi Wang, Ruiqiao Wu, Jingchi Gao, Xingru Yan, Qian Chang, Feng He, Zhihui Zhang and Yuliang Li Xinlong Fu , Changshui Huang , Yi Wang , Ruiqiao Wu , Jingchi Gao , Xingru Yan , Qian Chang , Feng He , Zhihui Zhang and Yuliang Li https://doi.org/10.31635/ccschem.025.202405392 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail The axial stretching or compression of the two-dimensional (2D) plane has been predicted to modulate the properties of 2D materials, such as band structure, electronic transport and energy conversion. Here, the uniaxial stretching that caused graphdiyne (GDY) 2D plane deformation has been utilized as a handle for constructing adjustable solid Mg-moisture battery (SMB). By extruding the GDY nanosheet array sponge, the transmission of stress along the compressible sponge enables effective and precise in-plane uniaxial stretching of the GDY 2D layers, resulting in changes in the electronic structure, thereby enhancing its catalytic activity. Both experiments and density functional theory (DFT) calculations reveal the narrowed band structure (from 0.47 eV to 0.30 eV) and boosting hydrogen evolution performance of GDY-based electrode under uniaxial stretching, then enhancing the output of the battery. The maximum power density increases from 0.40 mW cm−2 to 7.0 mW cm−2 by 17.5 times. This energy device with external physical field regulation based on axial stretching of 2D plane provides a new approach for the development and integration of adjustable smart electronic devices and batteries. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentNot Yet AssignedSupporting Information Copyright & Permissions© 2025 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...