journal article·2021-02-24

Quinone-Enriched Conjugated Microporous Polymer as an Organic Cathode for Li-Ion Batteries

Zhipeng Ouyang, Diana Tranca, Yazhen Zhao, Zhenying Chen, Xiaobin Fu, Jinhui Zhu, Guangqun Zhai, Changchun Ke, Emmanuel Kymakis, Xiaodong Zhuang

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Abstract

Among various organic cathode materials, C═O group-enriched structures have attracted wide attention worldwide. However, small organic molecules have long suffered from dissolving in electrolytes during charge–discharge cycles. π-Conjugated microporous polymers (CMPs) become one solution to address this issue. However, the synthesis strategy for CMPs with rich C═O groups and stable backbones remains a challenge. In this study, a novel CMP enriched with C═O units was synthesized through a highly efficient Diels–Alder reaction. The as-prepared CMP exhibited a fused carbon backbone and a semiconductive characteristic with a band gap of 1.4 eV. When used as an organic electrode material in LIBs, the insoluble and robust fused structure caused such CMPs to exhibit remarkable cycling stability (a 96.1% capacity retention at 0.2 A g–1 after 200 cycles and a 94.8% capacity retention at 1 A g–1 after 1500 cycles), superior lithium-ion diffusion coefficient (5.30 × 10–11 cm2 s–1), and excellent rate capability (95.8 mAh g–1 at 1 A g–1). This study provided a novel synthetic method for fabricating quinone-enriched fused CMPs, which can be used as LIB cathode materials.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Covalent Organic Framework Applications · Metal-Organic Frameworks: Synthesis and Applications · Conducting polymers and applications

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

Affiliations

The Meso-Entropy Matter Lab, Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China

The Meso-Entropy Matter Lab, The State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China

College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China

Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Department of Electrical & Computer Engineering, Hellenic Mediterranean University, Estavromenos, 71410 Heraklion, Greece

Funding

Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · NSFC Young Scientists Fund · the Key Science and Technology Project in Henan Province (Innovation Leading Project) · China Postdoctoral Science Fund · Greece and EU Regional Development Fund (Greece-China joint R&D project Calypso) · National Key Research and Development Program of China

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