Title:
THREE-DIMENSIONAL STRUCTURED CARBONIZED PLANT-FIBER MATERIAL SERVING AS NEGATIVE ELECTRODE MATERIAL FOR SODIUM-ION BATTERY AND LITHIUM-ION BATTERY, AND PREPARATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/126818
Kind Code:
A1
Abstract:
Provided are a three-dimensional structured carbonized plant-fiber material serving as a negative electrode material for a sodium-ion battery and a lithium-ion battery, and a preparation method thereof. The preparation method of the three-dimensional structured carbonized plant-fiber material comprises: immersing a plant fiber in a pore-forming agent, the agent being a nitrate solution, at a constant temperature; performing calcination and grinding in a protective atmosphere after performing drying; and performing drying after rinsing the same with hydrochloric acid and deionized water. The three-dimensional structured carbonized plant-fiber material is formed as a three-dimensional porous sheet and has a long tunnel structure. The sheet has a thickness of 5-30 nm. The three-dimensional structured carbonized plant-fiber material can be used to construct an excellent electrically-conductive network, and the porous and long tunnel structure facilitates fast dispersion of ions of an electrode material, thereby increasing a utilization rate of the material. The three-dimensional structured carbonized plant-fiber material has a high specific capacity, and exhibits excellent cycling performance and high-rate performance. The preparation method can be implemented easily and is eco-friendly as the materials thereof come from a variety of sources.
Inventors:
YANG CHENGHAO (CN)
XIONG JIAWEN (CN)
XIONG XUNHUI (CN)
XIONG JIAWEN (CN)
XIONG XUNHUI (CN)
Application Number:
PCT/CN2017/113058
Publication Date:
July 12, 2018
Filing Date:
November 27, 2017
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
H01M4/583
Foreign References:
CN106207188A | 2016-12-07 | |||
CN106654267A | 2017-05-10 | |||
CN105742571A | 2016-07-06 | |||
CN104701498A | 2015-06-10 | |||
CN106299384A | 2017-01-04 | |||
EP0767505A1 | 1997-04-09 | |||
CN103066294A | 2013-04-24 |
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (CN)
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