Self-Sacrifice Template Construction of Uniform Yolk-Shell ZnS@C for Superior Alkali-Ion Storage
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Article number | 2200247 |
Journal / Publication | Advanced Science |
Volume | 9 |
Issue number | 14 |
Online published | 15 Mar 2022 |
Publication status | Published - 16 May 2022 |
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DOI | DOI |
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85126197456&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(806a9f7b-6579-42f8-b930-3649ba3942f2).html |
Abstract
Secondary batteries have been widespread in the daily life causing an ever-growing demand for long-cycle lifespan and high-energy alkali-ion batteries. As an essential constituent part, electrode materials with superior electrochemical properties play a vital role in the battery systems. Here, an outstanding electrode of yolk-shell ZnS@C nanorods is developed, introducing considerable void space via a self-sacrificial template method. Such carbon encapsulated nanorods moderate integral electronic conductivity, thus ensuring rapid alkali-ions/electrons transporting. Furthermore, the porous structure of these nanorods endows enough void space to mitigate volume stress caused by the insertion/extraction of alkali-ions. Due to the unique structure, these yolk-shell ZnS@C nanorods achieve superior rate performance and cycling performance (740 mAh g-1 at 1.0 A g-1 after 540 cycles) for lithium-ion batteries. As a potassium-ion batteries anode, they achieve an ultra-long lifespan delivering 211.1 mAh g-1 at 1.0 A g-1 after 5700 cycles. The kinetic analysis reveals that these ZnS@C nanorods with considerable pseudocapacitive contribution benefit the fast lithiation/delithiation. Detailed transmission electron microscopy (TEM) and X-ray diffraction (XRD) analyses indicate that such yolk-shell ZnS@C anode is a typical reversible conversion reaction mechanism accomplished by alloying processes. This rational design strategy opens a window for the development of superior energy storage materials.
Research Area(s)
- alkali-ion batteries, anode, long-cycle life, yolk-shell, ZnS@C nanorods, POROUS CARBON POLYHEDRA, HIGH-PERFORMANCE ANODE, LITHIUM-ION, SODIUM, NANOPARTICLES, NANOSPHERES, NANOBOXES, MECHANISM, GRAPHENE
Citation Format(s)
Self-Sacrifice Template Construction of Uniform Yolk-Shell ZnS@C for Superior Alkali-Ion Storage. / Xu, Xijun; Li, Fangkun; Zhang, Dechao et al.
In: Advanced Science, Vol. 9, No. 14, 2200247, 16.05.2022.
In: Advanced Science, Vol. 9, No. 14, 2200247, 16.05.2022.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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