DataVXACS Energy LettersPaper
journal article·2025-05-09

Zinc/Proton Hybrid Batteries Enabled by Interlayer Zn-Enolate-Coordination Bridges in Covalent Organic Frameworks

Qianchuan Yu, Xinmei Song, Kaiqiang Zhang, Tianyu Shen, Jingjie Sun, Pengbo Zhang, Zuoxiu Tie, Jing Ma, Zhong Jin

ACS Energy Letters· Volume 10· Issue 5
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Source abstract

Abstract

Covalent organic frameworks (COFs) garnered significant attention as electrode materials for secondary batteries but are restricted by poor conductivity and limited capacity. Herein, we report an in situ electroreduction approach to construct permanent interlayer Zn-enolate coordination bridges in a multicarbonyl COF (namely, Tp–PTO), concurrently improving conductivity, specific capacity, and cyclability. Benefiting from a “C–O···Zn···O–C” bridging scaffold, abundant redox sites, π-conjugated structure, and smooth ion transport channels of Zn-bridged Tp–PTO COF, a Zn 2+ /H + costorage process with a high capacity and fast kinetics is achieved. Moreover, a unique alternant “H + → Zn 2+ → H + ” binding–detaching mechanism was revealed. Consequently, the Zn-bridged Tp–PTO COF demonstrated a high specific capacity (223 mAh g –1 at 0.1 A g –1 ) and long cycling stability (139.3 mAh g –1 after 10000 cycles at 5.0 A g –1 ). This work underscores the immense potential of the in situ metal coordination bridging strategy in enhancing the comprehensive performance of the COF-based electrode for advanced aqueous batteries.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advanced battery technologies research · Advancements in Battery Materials · Covalent Organic Framework Applications

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

Affiliations

State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Suzhou Key Laboratory of Green Intelligent Manufacturing of New Energy Materials and Devices, Tianchang New Materials and Energy Technology Research Center, Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering

Nanjing University

Funding

Suzhou Municipal Science and Technology Bureau · Natural Science Foundation of Jiangsu Province · Jiangsu Provincial Department of Science and Technology · National Natural Science Foundation of China · Scientific and Technological Achievements Transformation Special Fund of Jiangsu Province · Joint Fund of Equipment Pre-research and the Ministry of Education · Chenzhou city · Suzhou City

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