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Cellulose‐Derived Hollow Carbonaceous Nanospheres from Rice Husks as Anode for Lithium‐Ion Batteries with Enhanced Reversible Capacity and Cyclic Performance
Author(s) -
Yu Kaifeng,
Li Jian,
Qi Hui,
Liang Ce
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201700768
Subject(s) - anode , materials science , lithium (medication) , chemical engineering , calcination , hydrothermal carbonization , cellulose , carbon fibers , carbonization , energy storage , renewable energy , nanostructure , nanotechnology , electrode , composite material , composite number , chemistry , catalysis , organic chemistry , scanning electron microscope , endocrinology , engineering , power (physics) , quantum mechanics , medicine , physics , electrical engineering
Disordered carbons are widely used as anode materials for lithium‐ion batteries due to their stable cycle performance, high specific capacity and negative redox potentials. Among them, as an environmental friendly renewable source, biomass has attracted much attention for its application in the preparation of disordered carbon. We report a novel carbonaceous material with interconnected hollow nanosphere structure which used cellulose extracted from rice husk (RH) as a precursor and prepared through hydrothermal carbonization and high temperature calcination. When used as anodes for lithium‐ion batteries, the first discharge specific capacity is as high as 1040 mAhg −1 at a rate of 0.2 C and the reversible specific capacity stabilized at 489 mAhg −1 after 100 cycles. The novel disordered nanostructure material displays superior Lithium‐ion battery performance with large reversible capacities, excellent cyclic performance, and outstanding rate capability, highlighting the importance of hollow interconnected structure for maximum utilization of electrochemically active for energy storage applications in high‐performance lithium‐ion batteries.