Recyclable fabrication of hollow N-doped amorphous carbon nanospindles with abundant short-range curved carbon fragments as bifunctional anode for lithium/sodium ion storage

Chen Huang; Yizhao Su; Mingyi Wang; Peilin Zhang; Likang Qin; Yang Yang; Shigang Lu; Linlin Wang; Luyang Chen

doi:10.1016/j.jcis.2024.01.053

Recyclable fabrication of hollow N-doped amorphous carbon nanospindles with abundant short-range curved carbon fragments as bifunctional anode for lithium/sodium ion storage

J Colloid Interface Sci. 2024 Apr:659:868-877. doi: 10.1016/j.jcis.2024.01.053. Epub 2024 Jan 11.

Authors

Chen Huang¹, Yizhao Su¹, Mingyi Wang², Peilin Zhang¹, Likang Qin¹, Yang Yang¹, Shigang Lu³, Linlin Wang⁴, Luyang Chen⁵

Affiliations

¹ Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
² Polystar Engineering Plastics (Shanghai) Co. Ltd., Shanghai 201613, China. Electronic address: mingyi.wang@polystar-china.com.
³ Institute for Sustainable Energy/College of Science, Shanghai University, Shanghai 200444, China.
⁴ Institute for Sustainable Energy/College of Science, Shanghai University, Shanghai 200444, China. Electronic address: wlinlin@mail.ustc.edu.cn.
⁵ Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China. Electronic address: chenly@ecust.edu.cn.

PMID: 38219305
DOI: 10.1016/j.jcis.2024.01.053

Abstract

A recyclable hard-template method is proposed to exploit spindle-shaped hollow nitrogen-doped amorphous carbon (h-NAC) with a large number of short-range curved carbon fragments as anodes for lithium/sodium ion batteries (LIBs/SIBs). Besides providing adsorption sites due to the high existence of oxygen-containing functional groups (CO and COOH), the heavily exposed edge regions also provide a favorable storage environment with high adsorption energy for Li⁺/Na⁺ due to their short-range curved structure. Importantly, the etching solution of hard templates can be recycled to generate the FeOOH nanospindles as a precursor through a simple chemical titration, which supplies a new idea for the green preparation of hollow materials. The h-NAC electrode is proven to be bifunctional for storing lithium and sodium ions, displaying favorable rate capability (255 mAh g^-1 and 106 mAh g^-1 at 5 A g^-1 for LIBs and SIBs, respectively). After 1000 cycles at 1 A g^-1, the reproducible capacities of the LIBs and SIBs kept 496 mAh g^-1 and 181 mAh g^-1, respectively.

Keywords: Hollow structure; LIBs; N-doped amorphous carbon; Recycling template method; SIBs; Short-range curved carbon fragments.