Journal
JOURNAL OF POWER SOURCES
Volume 516, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2021.230699
Keywords
All-in-one batteries; Mn-doped K0.23V2O5; Zinc ion batteries; Flexible film
Funding
- Guangdong Basic and Applied Basic Research Foundation [2019A1515011615]
- Science and Technology Program of Guangzhou [2019050001]
- Scientific and Technological Plan of Guangdong Province, China [2019B090905005]
- Open Project of SCNU Qingyuan Institute of Science and Technology Innovation [HQYY2020-009]
- Department of Education of Guangdong Province [2018KTSCX047]
- Challenge Cup Gold Seed Cultivation Project of South China Normal University [21WDKC01]
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This study has successfully developed an advanced flexible all-in-one zinc ion battery with high capacity, stability, and excellent cycling performance.
A tremendous amount of work is devoted to build an all-in-one energy storage equipment to meet the everincreasing demand for flexible wearable electronics. At present, the flexible all-in-one zinc ion batteries have captured enormous attention owing to its high volume capacity, abundant reserve and robust security. Herein, the Mn-doped K0.23V2O5 nanobelts materials are innovatively prepared by introducing Mn and K ions into vanadium oxide, which will acquire an intensive conductivity and favorable Zn2+ storage. In the conventional aqueous zinc ion batteries, the Mn-doped K0.23V2O5 electrode offers a high discharge capacity of 269.1 mAh g(-1) after 100 cycles at the moderate current density of 1.0 A g(-1) and a remarkable cyclability (226.7 mAh g(-1) after 5000 cycles at 10.0 A g(-1)). Moreover, the electrode also displays a good rate performance. Besides, the binder free Mn-doped K0.23V2O5/CNT film is further constructed for flexible all-in-one batteries, which exhibits satisfactory cycling performance with high-capacity retention of greater than 84.1% after 2000 cycles under continuous bending. Thus, this work provides a facile strategy for new-generation convenient and wearable energy-storage facility.
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