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With the usage of well-ordered multi-layered graphene film (MLG; ∼9/10 layers) as interlayer between continuous films of a-Si (active electrode material) and Ni (current collector), the present work (involving in-situ experiments) aims at assessing/understanding various scientific aspects related to the influence of graphenic carbon based ‘buffer’ interlayer on the stress developments, integrity and...
‘Ultra-small’ LiFePO4 nanoparticles (~5nm) ‘decorating’ multi-walled carbon nanotubes (MWCNTs) have been developed, possibly for the first time, via engineered but facile sol-gel route. During delithiation/lithiation, nucleation-growth induced first-order phase transformation between LiFePO4 and FePO4 could be experimentally evidenced, albeit only in the presence of MWCNTs, even for these particle...
By monitoring the stress developments in situ during lithiation/delithiation of few layers graphene films, we report here for the first time an interesting observation of stress release/reversal just within the potential ranges corresponding to the co-existences of pristine graphene, dilute stage I and stage IV Li-graphite intercalation compounds (Li-GICs). This, along with supporting observations...
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