Journal
ADVANCED ENERGY MATERIALS
Volume 8, Issue 21, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201703509
Keywords
all-plastic; heterocyclic dithioether; lithium-ion batteries; poly(quinone); single bi-functional polymers
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Funding
- Ministry of Education, Singapore [MOE 2017-T2-1-021]
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, China [sklssm201833]
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The design and fabrication of high-performance all-plastic batteries is essentially important to achieve future flexible electronics. A major challenge in this field is the lack of stable and reliable soft organic electrodes with satisfactory performance. Here, a novel all-plastic-electrode based Li-ion battery with a single flexible bi-functional ladderized heterocyclic poly(quinone), (C6O2S2)(n), as both cathode and anode is demonstrated. Benefiting from its unique ladder-like quinone and dithioether structure, the as-prepared polymer cathode shows a high energy density of 624 Wh kg(-1) (vs lithium anode) and a stable battery life of 1000 cycles. Moreover, the as-fabricated symmetric full-battery delivers a large capacity of 249 mAh g(-1) (at 20 mA g(-1)), a good capacity retention of 119 mAh g(-1) after 250 cycles (at 1.0 A g(-1)) and a noteworthy energy density up to 276 Wh kg(-1). The superior performance of poly(2,3-dithiino-1,4-benzoquinone)-based electrode rivals most of the state-of-the-art demonstrations on organic-based metal-ion shuttling batteries. The study provides an effective strategy to develop stable bi-functional electrode materials toward the next-generation of high performance all-plastic batteries.
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