Hong, Soonhyun Lee, Heesang Yu, Young-Sang Park, Jungjin Kim, Chunjoong 2024-01-19T09:05:26Z 2024-01-19T09:05:26Z 2023-02-10 2023-07 1738-8090 https://pubs.kist.re.kr/handle/201004/113570 The lithium-ion battery has been extensively used as one of the most powerful energy storage devices, and its market is increasing by 10% annually. Among promising candidates for the high-performance cathode of the lithium-ion battery, disordered rock-salt structured cathode materials have attracted great attention due to their extended capacities and cost effectiveness over traditional cathode materials with the layered structure through the design of more accessible lithium-ion sites and low-cost transition metals. However, they have not yet been utilized owing to their low electronic/ionic conductivities and poor cycle life. To overcome the major hurdle for improving the electrochemical performance of the disordered rock-salt materials, we synthesize cation- and anion-doped disordered Li3NbO4 with rock-salt structures, Li1.3Nb0.43Ni0.27O2 and Li1.3Nb0.43Ni0.27O1.97F0.05, respectively, and decreased their particle sizes to reduce the Li-ion transport path. Enhanced electrochemical performances of the doped-disordered-rock-salt materials and their underlying mechanism have been addressed by cross-confirmation using various analysis techniques. [GRAPHICS] English 대한금속·재료학회 Development of a Rock-Salt Structure for High Energy Density Lithium-Ion Batteries Article 10.1007/s13391-022-00397-x 1 Electronic Materials Letters, v.19, no.4, pp.359 - 366 Electronic Materials Letters 19 4 359 366 N scie scopus kci ART002966089 000916912800003 2-s2.0-85146222640 Materials Science, Multidisciplinary Materials Science Article PARTICLE-SIZE PERFORMANCE COMPOSITES OXIDES Cathodes Disordered Rock-Salt Structures Li3NbO4 Cation doping Anion doping Lithium-ion batteries