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A Boron Nitride Nanosheets Composite Membrane for a Long‐Life Zinc‐Based Flow Battery
- Source :
- Angewandte Chemie International Edition. 59:6715-6719
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- The capability to maintain a constant system temperature is vital in nature, since it endows the system with enhanced lifetime. This trait also works for zinc-based batteries, because their cycle-life is limited by notorious zinc dendrite/accumulation, which are highly affected by the inhomogeneous distribution of temperature on electrode and relatively low mechanical strength of membrane. Herein, boron nitride nanosheets (BNNSs) with high mechanical strength serving as heat-porter are introduced onto a porous substrate to enable uniform deposition of zinc and further a zinc-based flow battery with long-cycle life. The results indicate that BNNSs can effectively adjust the deposited zinc from needle-like to French fries-like morphology, thus affording the battery with a stable performance for nearly 500 cycles at 80 mA cm-2 . Most importantly, an energy efficiency of above 80 % can be obtained even at 200 mA cm-2 , which is by far the highest value ever reported among zinc-based flow batteries.
- Subjects :
- Battery (electricity)
Materials science
010405 organic chemistry
chemistry.chemical_element
General Chemistry
Zinc
010402 general chemistry
01 natural sciences
Flow battery
Catalysis
0104 chemical sciences
chemistry.chemical_compound
Dendrite (crystal)
Membrane
chemistry
Chemical engineering
Boron nitride
Electrode
Deposition (law)
Subjects
Details
- ISSN :
- 15213773 and 14337851
- Volume :
- 59
- Database :
- OpenAIRE
- Journal :
- Angewandte Chemie International Edition
- Accession number :
- edsair.doi.dedup.....64717c48825766305c92753d8bf0786c