Using synchrotron surface X-ray diffraction, we investigated the atomic structures of the interfaces of a solid electrolyte (Li3PO4) and electrode (LiCoO2). We prepared two types of interfaces with high and low interface resistances; the low-resistance interface exhibited a flat and well-ordered atomic arrangement at the electrode surface, whereas the high-resistance interface showed a disordered interface. These results indicate that the crystallinity of LiCoO2 at the interface has a significant impact on interface resistance. Furthermore, we reveal that the migration of Li ions along the interface and into grain boundaries and antiphase domain boundaries is a critical factor reducing interface resistance.
机构:Harbin University of Science and Technology,Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering
Da Zhou
Libo Li
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机构:Harbin University of Science and Technology,Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering
Libo Li
Jintian Du
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机构:Harbin University of Science and Technology,Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering
Jintian Du
Mo Zhai
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机构:Harbin University of Science and Technology,Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering
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Robert Bosch LLC, Res & Technol Ctr, Sunnyvale, CA 94085 USA
Karlsruhe Inst Technol, Dept Mech Engn, D-76131 Karlsruhe, GermanyUniv Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, Berkeley, CA 94720 USA
Besli, Muenir M.
Usubelli, Camille
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Robert Bosch LLC, Res & Technol Ctr, Sunnyvale, CA 94085 USA
Univ Strasbourg Strasbourg, CNRS, UMR 7504, IPCMS, F-67034 Strasbourg, FranceUniv Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, Berkeley, CA 94720 USA
Usubelli, Camille
Metzger, Michael
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Robert Bosch LLC, Res & Technol Ctr, Sunnyvale, CA 94085 USAUniv Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, Berkeley, CA 94720 USA
Metzger, Michael
Pande, Vikram
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Robert Bosch LLC, Res & Technol Ctr, Sunnyvale, CA 94085 USAUniv Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, Berkeley, CA 94720 USA
Pande, Vikram
Harry, Katherine
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Holo Inc, Oakland, CA 94607 USAUniv Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, Berkeley, CA 94720 USA
Harry, Katherine
Nordlund, Dennis
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SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USAUniv Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, Berkeley, CA 94720 USA