Multishelled Ni-Rich Li(Ni x Co y Mn z )O2 Hollow Fibers with Low Cation Mixing as High-Performance Cathode Materials for Li-Ion Batteries

Yihui Zou; Xianfeng Yang; Chunxiao Lv; Tongchao Liu; Yanzhi Xia; Lu Shang; Geoffrey I N Waterhouse; Dongjiang Yang; Tierui Zhang

doi:10.1002/advs.201600262

Multishelled Ni-Rich Li(Ni _x Co _y Mn _z )O₂ Hollow Fibers with Low Cation Mixing as High-Performance Cathode Materials for Li-Ion Batteries

Adv Sci (Weinh). 2016 Sep 7;4(1):1600262. doi: 10.1002/advs.201600262. eCollection 2017 Jan.

Authors

Yihui Zou¹, Xianfeng Yang², Chunxiao Lv¹, Tongchao Liu³, Yanzhi Xia¹, Lu Shang⁴, Geoffrey I N Waterhouse⁵, Dongjiang Yang¹, Tierui Zhang⁴

Affiliations

¹ Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province School of Environmental Science and Engineering Qingdao University Qingdao 266071 P. R. China.
² Analytical and Testing Centre South China University of Technology Guangzhou 510640 China.
³ School of Advanced Materials Peking University Shenzhen Graduate School Peking University Shenzhen 518055 China.
⁴ Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China.
⁵ School of Chemical Sciences the University of Auckland Auckland 1142 New Zealand.

Abstract

A simple seaweed biomass conversion strategy is proposed to synthesize highly porous multishelled Ni-rich Li(Ni _x Co _y Mn _z )O₂ hollow fibers with very low cation mixing. The low cation mixing results from the cation confinement by the novel "egg-box" structure in the alginate template. These hollow fibers exhibit remarkable energy density, high-rate capacity, and long-term cycling stability when used as cathode material for Li-ion batteries.

Keywords: Li(NixCoyMnz)O2; Li‐ion batteries; alginate; cathode materials; multishelled hollow fibers.