title: Tailoring Anisotropic Li-Ion Transport Tunnels on Orthogonally Arranged Li-Rich Layered Oxide Nanoplates Toward High-Performance Li-Ion Batteries.
abstract: High-performance Li-rich layered oxide (LRLO) cathode material is appealing for next-generation Li-ion batteries owing to its high specific capacity (>300 mAh g-1). Despite intense studies in the past decade, the low initial Coulombic efficiency and unsatisfactory cycling stability of LRLO still remain as great challenges for its practical applications. Here, we report a rational design of the orthogonally arranged {010}-oriented LRLO nanoplates with built-in anisotropic Li+ion transport tunnels. Such a novel structure enables fast Li+ion intercalation and deintercalation kinetics and enhances structural stability of LRLO. Theoretical calculations and experimental characterizations demonstrate the successful synthesis of target cathode material that delivers an initial discharge capacity as high as 303 mAh g-1with an initial Coulombic efficiency of 93%. After 200 cycles at 1.0 C rate, an excellent capacity retention of 92% can be attained. Our method reported here opens a door to the development of high-performance Ni-Co-Mn-based cathode materials for high-energy density Li-ion batteries.
authors.affiliation: School of Metallurgy and Environment, Central South University , Changsha 410083, People's Republic of China.|Department of Applied Physics, The Hong Kong Polytechnic University , Kowloon, Hong Kong, People's Republic of China.
authors.forename: Ming
authors.initials: M
authors.lastname: Xu
authors.affiliation: Department of Applied Physics, The Hong Kong Polytechnic University , Kowloon, Hong Kong, People's Republic of China.
authors.forename: Linfeng
authors.identifier: 0000-0001-7329-0019
authors.initials: L
authors.lastname: Fei
authors.affiliation: School of Physical and Electronic Science, Changsha University of Science and Technology , Changsha 410004, Hunan, People's Republic of China.
authors.forename: Weibing
authors.identifier: 0000-0003-1306-4540
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Department of Applied Physics, The Hong Kong Polytechnic University , Kowloon, Hong Kong, People's Republic of China.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.affiliation: University Research Facility in Materials Characterization and Device Fabrication, The Hong Kong Polytechnic University , Kowloon, Hong Kong, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Lu
authors.affiliation: Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science , Shanghai 200050, People's Republic of China.
authors.forename: Nian
authors.initials: N
authors.lastname: Zhang
authors.affiliation: School of Metallurgy and Environment, Central South University , Changsha 410083, People's Republic of China.
authors.forename: Yanqing
authors.initials: Y
authors.lastname: Lai
authors.affiliation: School of Metallurgy and Environment, Central South University , Changsha 410083, People's Republic of China.
authors.forename: Zhian
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: School of Metallurgy and Environment, Central South University , Changsha 410083, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Fang
authors.affiliation: School of Metallurgy and Environment, Central South University , Changsha 410083, People's Republic of China.
authors.forename: Kai
authors.initials: K
authors.lastname: Zhang
authors.affiliation: School of Metallurgy and Environment, Central South University , Changsha 410083, People's Republic of China.
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Applied Physics, The Hong Kong Polytechnic University , Kowloon, Hong Kong, People's Republic of China.
authors.forename: Haitao
authors.identifier: 0000-0002-3861-2702
authors.initials: H
authors.lastname: Huang
keywords: Li-ion batteries; Li-rich layered oxide; Orthogonal nanoplates; electrode material; spinel/rock-salt tunnels