DataVXACS NanoPaper
journal article·2025-05-27

Alternant P-Type/N-Type Conjugated Bipolar Copolymer Cathodes for Advanced Aqueous Zinc-Ion Batteries

Yanrong Wang, Shigui Qiu, Shengwen Tan, Huaizhu Wang, Xuemei Wang, Chenxi Zheng, Lubin Ni, Guowang Diao, Caixing Wang, Zhong Jin

ACS Nano· Volume 19· Issue 20
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Source abstract

Abstract

To synergistically combine the features of high specific capacity of n-type organic materials with the high voltage of p-type organic materials, bipolar phenolthiazine-based cathodes with p-type/n-type structures are gaining increased attention for aqueous zinc-ion batteries (AZIBs). Nevertheless, their small molecular structure often leads to dissolution during cycling. To address the challenge, a bipolar poly(phenothiazine iodide-3,3′-diaminobenzidine), abbreviated as P(PTD-DAB), was synthesized as a cathode material. Through comprehensive spectroscopic analyses, we elucidated a cooperative p-type/n-type dual-ion storage mechanism. Specifically, the N atom in the phenothiazine core stores Zn 2+ or H + cations via n-type reactions, while the N atoms connecting phenothiazinium tetraiodide and 3,3′-diaminobenzidine monomers, along with S atoms, act as p-type active sites for storing OTF – anions. The material delivers an average operating voltage of 1 V and achieves a high specific capacity of 211.8 mAh g –1 at a low current density of 0.1 A g –1 . Additionally, it shows 90% capacity over 3600 cycles at a high current density of 3 A g –1 while sustaining robust stability at a high mass loading of active cathode (10 mg cm –2 ). Furthermore, flexible belt-shaped cells maintain 88% capacity retention over 550 cycles at 3 A g –1 even when subjected to repeated bending conditions. This work represents a great advancement in developing bipolar polymers for high-performance AZIBs and offers valuable insights into their design principle and functionality.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storagePolymers

OpenAlex topics: Advanced battery technologies research · Conducting polymers and applications · Advanced Battery Technologies Research

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

Affiliations

Institute of Innovation Materials and Energy, School of Chemistry and Chemical Engineering

Yangzhou University

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

National Natural Science Foundation of China · Jiangsu Province Natural Science Foundation · Jiangsu Province Scientific and Technological Achievements Transformation Special Fund · Jiangsu Province Academic Degree and Postgraduate Education Reform Project · Open Program of State Key Laboratory of Coordination Chemistry · Provincial Special Project in Chenzhou National Sustainable Development Agenda Innovation Demonstration Zone · Suzhou City Key Core Technology Open Competition Project · Jiangsu Province Science and Technology Major Project · Suzhou Wujiang District? Gusu Leading Talent Program of Scientific and Technological Innovation and Entrepreneurship · General Project of the Joint Fund of Equipment Pre-research and the Ministry of Education · Open Research Fund of Suzhou Laboratory

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