Publications by authors named "Chiho Jo"
Increasing lithium contents within the lattice of positive electrode materials is projected in pursuit of high-energy-density batteries. However, it intensifies the release of lattice oxygen and subsequent gas evolution during operations. This poses significant challenges for managing internal pressure of batteries, particularly in terms of the management of gas evolution in composite electrodes-an area that remains largely unexplored.
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- Understanding the local cation order in crystal structures is key to improving the electrochemical performance of high-energy Mn-rich cathode materials for Li-ion batteries, particularly layered and disordered rock-salt types.
- The study reveals that ultrahigh-capacity partially ordered cathodes have a heterogeneous nature with distinct phases, contrasting with traditional single-phase designs.
- By engineering these materials through Ti doping, researchers can enhance rock-salt content and particle heterogeneity, leading to significantly improved cycling stability and capacity retention in the cathodes.