Molecular Precursor-Driven Synthesis of Copper Telluride Nanostructures for LIB Anode Application.
Nisha KushwahGotluru KedarnathAmey WadawaleKruti K HalankarBalaji Prasad MandalMohsin JafarBathula VishwanadhPublished in: Inorganic chemistry (2023)
Copper tellurides have garnered substantial interest for their applicability as an electrocatalyst for water splitting, battery anodes and photodetectors, etc. Moreover, synthesis of phase pure metal tellurides using the multi-source precursor method is challenging. Therefore, a facile synthesis protocol for copper tellurides is anticipated. The current study involves a simplistic single source molecular precursor pathway for the synthesis of orthorhombic-Cu 2.86 Te 2 nano blocks and -Cu 31 Te 24 faceted nanocrystals employing the [Cu{TeC 5 H 3 (Me-5)N}] 4 cluster in thermolysis and pyrolysis, respectively. The pristine nanostructures were carefully characterized by powder X-ray diffraction, energy-dispersive X-ray spectroscopy, electron microscopic techniques (scanning electron microscopy and transmission electron microscopy), and diffuse reflectance spectroscopy to know the crystal structure, phase purity, elemental composition, distribution of elements, morphology, and optical band gap. These measurements suggests that the reaction conditions fetch nanostructures of different sizes, crystal structures, morphologies, and band gaps. As prepared nanostructures were evaluated for lithium-ion batteries (LIBs) anode material. The cells fabricated with orthorhombic Cu 2.86 Te 2 and orthorhombic Cu 31 Te 24 nanostructures deliver capacities of 68 and 118 mA h/g after 100 cycles. The LIB anode made up of Cu 31 Te 24 faceted nanocrystals exhibited good cyclability and mechanical stability.
Keyphrases
- electron microscopy
- high resolution
- ion batteries
- metal organic framework
- crystal structure
- aqueous solution
- single molecule
- randomized controlled trial
- reduced graphene oxide
- magnetic resonance imaging
- magnetic resonance
- room temperature
- low grade
- ionic liquid
- cell cycle arrest
- computed tomography
- gold nanoparticles
- induced apoptosis
- risk assessment
- oxidative stress
- solid state
- heavy metals
- endoplasmic reticulum stress
- energy transfer
- gas chromatography mass spectrometry