Binding mechanism and electrochemical properties of M13 phage-sulfur composite.
basic_science · Level V
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- Record sourced from PubMed, PMID 24324560.
- Also identified by DOI 10.1371/journal.pone.0082332 and PMC identifier PMC3024699.
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Abstract
Self-assembly of nanostructured materials has been proven a powerful technique in material design and synthesis. By phage display screening, M13 phage was found to strongly bind sulfur particles. Fourier transform infrared and X-ray photoelectron spectroscopy measurements indicated that the strong sulfur-binding ability of M13 phage derives from newly generated S-O and C-S bonds. Using this phage assembled sulfur composite in a lithium battery, the first discharge capacity reached 1117 mAh g(-1), which is more than twice that of the sulfur only cathode. Besides, the negative polysulfide shuttle effect in a lithium-sulfur battery was significantly suppressed.