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Creators/Authors contains: "Ji, Guang"

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  1. ; ; ; ; ; ; ; ; ; ; et al (, Nature Nanotechnology)
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  2. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review A)
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  3. ; ; ; ; ; ; ; ; ; ; et al (, Nature Communications)
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  4. ; ; ; ; ; ; ; ; ; ; et al (, Science)
    High-energy nickel (Ni)–rich cathode will play a key role in advanced lithium (Li)–ion batteries, but it suffers from moisture sensitivity, side reactions, and gas generation. Single-crystalline Ni-rich cathode has a great potential to address the challenges present in its polycrystalline counterpart by reducing phase boundaries and materials surfaces. However, synthesis of high-performance single-crystalline Ni-rich cathode is very challenging, notwithstanding a fundamental linkage between overpotential, microstructure, and electrochemical behaviors in single-crystalline Ni-rich cathodes. We observe reversible planar gliding and microcracking along the (003) plane in a single-crystalline Ni-rich cathode. The reversible formation of microstructure defects is correlated with the localized stresses induced by a concentration gradient of Li atoms in the lattice, providing clues to mitigate particle fracture from synthesis modifications. 
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