دورية أكاديمية
Dendritic Copper Current Collectors as a Capacity Boosting Material for Polymer-Templated Si/Ge/C Anodes in Li-Ion Batteries
| العنوان: | Dendritic Copper Current Collectors as a Capacity Boosting Material for Polymer-Templated Si/Ge/C Anodes in Li-Ion Batteries |
|---|---|
| المؤلفون: | Christian L. Weindl, Christian E. Fajman, Zhuijun Xu, Tianle Zheng, Gilles E. Möhl, Narendra Chaulagain, Karthik Shankar, Ralph Gilles, Thomas F. Fässler, Peter Müller-Buschbaum |
| سنة النشر: | 2024 |
| مصطلحات موضوعية: | Biophysics, Biochemistry, Medicine, Cell Biology, Neuroscience, Physiology, Ecology, Chemical Sciences not elsewhere classified, synthesize nanoporous coating, like copper microstructures, intricate branching structure, highly effective method, elevated surface area, dissolvable zintl clusters, surface area increase, electrochemical impedance spectroscopy, dendritic copper cells, 9 , 8 , 12 , zintl phase k, c thin films, capacity boosting material, capacity anode coatings, efficient synthesis routine, thin films, efficient routine, boosting material, capacity increase, ray spectroscopy |
| الوصف: | Dendritic copper offers a highly effective method for synthesizing porous copper anodes due to its intricate branching structure. This morphology results in an elevated surface area-to-volume ratio, facilitating shortened electron pathways during aqueous and electrolyte permeation. Here, we demonstrate a procedure for a time- and cost-efficient synthesis routine of fern-like copper microstructures as a host for polymer-templated Si/Ge/C thin films. Dissolvable Zintl clusters and sol–gel chemistry are used to synthesize nanoporous coating as the anode. Cyclic voltammetry (CV) with KOH as the electrolyte is used to estimate the surface area increase in the dendritic copper current collectors (CCs). Half cells are assembled and tested with battery-related techniques such as CV, galvanostatic cycling, and electrochemical impedance spectroscopy, showing a capacity increase in the dendritic copper cells. Energy-dispersive X-ray spectroscopy is used to estimate the removal of K in the bulk after oxidizing the Zintl phase K 12 Si 8 Ge 9 in the polymer/precursor blend with SiCl 4 . Furthermore, scanning electron microscopy images are provided to depict the thin films after synthesis and track the degradation of the half cells after cycling, revealing that the morphological degradation through alloying/dealloying is reduced for the dendritic Cu CC anodes as compared with the bare reference. Finally, we highlight this time- and cost-efficient routine for synthesizing this capacity-boosting material for low-mobility and high-capacity anode coatings. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| العلاقة: | https://figshare.com/articles/journal_contribution/Dendritic_Copper_Current_Collectors_as_a_Capacity_Boosting_Material_for_Polymer-Templated_Si_Ge_C_Anodes_in_Li-Ion_Batteries/24937260Test |
| DOI: | 10.1021/acsami.3c15735.s001 |
| الإتاحة: | https://doi.org/10.1021/acsami.3c15735.s001Test https://figshare.com/articles/journal_contribution/Dendritic_Copper_Current_Collectors_as_a_Capacity_Boosting_Material_for_Polymer-Templated_Si_Ge_C_Anodes_in_Li-Ion_Batteries/24937260Test |
| حقوق: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.D42CE5BD |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acsami.3c15735.s001 |
|---|