DataVXACS Energy LettersPaper
journal article·2025-01-10

Tailoring C3N4 Host to Enable a High-Loading Iodine Electrode for High Energy and Long Cycling Zn–Iodine Battery

Wenwen Cao, Tao Hu, Yuanyuan Zhao, Zhenglin Li, Yichan Hu, Cuncheng Li, Yiqiang Sun, Feng Ding, Guojin Liang

ACS Energy Letters· Volume 10· Issue 1
Publisher page
Source abstract

Abstract

The high-energy-density zinc–iodine batteries (ZIBs) are hindered by low iodine loading in the cathode, which limited the specific capacity and energy density at the total electrode level. The unstable adsorption by the conventional host materials of the iodine electrode exacerbates the severe iodine shuttling and sluggish reaction kinetics. Here, we developed Br-doped carbon nitride (BrCN) nanosheets by using a chemical exfoliation strategy and doping engineering to obtain efficient iodine host materials for the iodine electrode. It eventually enhanced the adsorption force between BrCN and the iodine species, effectively stabilizing the high-loading iodine electrode and suppressing the polyiodide shuttle. As a result, BrCN-based host achieves an iodine mass loading of 14.1 mg cm –2 of 46 wt % mass loading ratio (up to a maximum loading of 23.5 mg cm –2 ), which achieves a high specific capacity of 97.0 mAh g –1 and the energy density of 116.4 Wh kg –1 based on the total iodine electrode.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageNanomaterials

OpenAlex topics: Advanced battery technologies research · Perovskite Materials and Applications · Advanced Photocatalysis Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250055, P. R. China

Faculty of Materials Science and Energy Engineering, Shenzhen University of Advanced Technology, Shenzhen 518055, China

School of Materials Science and Engineering, Anhui University, Hefei 230601, China

Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Ministry of Education, Dalian 116024, China

Funding

Science and Technology Foundation of Shenzhen City · Basic and Applied Basic Research Foundation of Guangdong Province · Youth Innovation Technology Project of Higher School in Shandong Province · State Key Laboratory of New Textile Materials and Advanced Processing Technologies · National Natural Science Foundation of China Youth Science Foundation Project

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