Activating Selenium Cathode Chemistry for Aqueous Zinc-Ion Batteries.
Fuhan CuiRui PanLin SuChongyang ZhuHezhe LinRuqian LianRuining FuGuoju ZhangZhenjing JiangXueChen HuYuchen PanShisheng HouFuchun ZhangKai ZhuYanhao DongFeng XuPublished in: Advanced materials (Deerfield Beach, Fla.) (2023)
Aqueous rechargeable zinc-ion batteries (ARZIBs) are a promising next-generation energy storage device by virtue of the superior safety and low cost of both the aqueous electrolyte and zinc metal anode. However, their development has been hindered by the lack of suitable cathodes with high volumetric capacity that can provide both lightweight and compact size. Herein we report a novel cathode chemistry based on amorphous Se doped with transition metal Ru that mitigates the resistive surface layer produced by the side reactions between the Se cathode and aqueous electrolyte. This improvement can permit high volumetric capacity in this system. Distinct from conventional conversion mechanisms between Se and ZnSe in Se||Zn cells, this strategy realizes synchronous proton and Zn 2+ intercalation/deintercalation in the Ru-doped amorphous Se||Zn half cells. Moreover, an unanticipated Zn 2+ deposition/stripping process in this system further contributes to the superior electrochemical performance of this new cathode chemistry. Consequently, the Ru-doped amorphous Se||Zn half cells are found to deliver a record-high capacity of 721 mAh g -1 /3472 mAh cm -3 , and superior cycling stability of over 800 cycles with only 0.015% capacity decay per cycle. This reported work opens the door for new chemistries that can further improve the gravimetric and volumetric capacity of ARZIBs. This article is protected by copyright. All rights reserved.
Keyphrases
- ion batteries
- induced apoptosis
- quantum dots
- heavy metals
- ionic liquid
- cell cycle arrest
- low cost
- signaling pathway
- room temperature
- endoplasmic reticulum stress
- radiation therapy
- oxidative stress
- cell death
- energy transfer
- visible light
- metal organic framework
- gold nanoparticles
- molecularly imprinted
- electron transfer