Engineering nano-composite Li4Ti5O12 anodes via scanning electron-probe fabrication

► We use electron-beam nanofabrication to improve the conductivity of Li4Ti5O12. ► We measure in situ I-V property on a single nano-particle of rocksalt LTO phase. ► A LTO nano-composite with embedded conducting channels is fabricated using STEM. ► We indentify a new phase transformation from Li4Ti5O12 (LTO) spinel to rocksalt. ► A cation order-disorder mechanism is found in the spinel to rocksalt transformation.