Electronic spin transition in nanosize stoichiometric lithium cobalt oxide.

42 4 SURFACE SPIN TRANSITION IN NANO-SIZE STOICHIOMETRIC LiCoO2 AND ITS APPLICATIONS IN OXYGEN EVOLUTION REACTION / OXYGEN REDUCTION REACTION (OER/ORR) CATALYTIC PROCESS 4.1 Electronic Spin Transition in Nano-size Stoichiometric Lithium Cobalt Oxide

Resonant x-ray scattering in 3d-transition-metal oxides: Anisotropy and charge orderings

The structural, magnetic and electronic properties of transition metal oxides reflect in atomic charge, spin and orbital degrees of freedom. Resonant x-ray scattering (RXS) allows us to perform an accurate investigation of all these electronic degrees. RXS combines high-Q resolution x-ray diffraction with the properties of the resonance providing information similar to that obtained by atomic s...

Lithium-ion diffusion mechanisms in the battery anode material Li1+xV1xO2

Layered Li1+xV1 xO2 has attracted recent interest as a potential low voltage and high energy density anode material for lithium-ion batteries. A greater understanding of the lithium-ion transport mechanisms is important in optimising such oxide anodes. Here, stoichiometric LiVO2 and Li-rich Li1.07V0.93O2 are investigated using atomistic modelling techniques. Lithium-ion migration is not found i...

Correlating cation ordering and voltage fade in a lithium-manganese-rich lithium-ion battery cathode oxide: a joint magnetic susceptibility and TEM study.

Structure-electrochemical property correlation is presented for lithium-manganese-rich layered-layered nickel manganese cobalt oxide (LMR-NMC) having composition Li1.2Co0.1Mn0.55Ni0.15O2 (TODA HE5050) in order to examine the possible reasons for voltage fade during short-to-mid-term electrochemical cycling. The Li1.2Co0.1Mn0.55Ni0.15O2 based cathodes were cycled at two different upper cutoff vo...

Bringing carbon-silicon bonds to life.

Tuning nanoparticle strain The catalytic activity of metals in heterogeneous catalysts can be altered by applying strain, which changes the crystalline lattice spacing and modifies the metal’s electronic properties. Wang et al. show how particles of cobalt oxide, a positive electrode for lithium batteries, can expand or contract with charging and transfer strain to adsorbed platinum nanoparticl...