Journal
CHEMICAL ENGINEERING JOURNAL
Volume 378, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.122212
Keywords
Si anode; MXene; Sandwich-structure; Lithium ion batteries
Categories
Funding
- National Natural Science Funds [21676198]
- Program of Introducing Talents of Discipline to Universities [B06006]
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The practical application of Si anodes is hampered by huge volume expansion during lithiation/delithiation process, leading to poor cycling performance and electrode fracture. To overcome such weakness, a sandwich-like Si/d-Ti3C2 hybrids are fabricated and show an excellent reversible capacity of 1130 mA h g(-1) at a current density of 500 mA g(-1) after 200 cycles. Comparing with pristine Si, the improved electrochemical performance of Si/d-Ti3C2 hybrids can be attributed to the fact that the d-Ti3C2 MXene can significantly enhance the electronic conductivity of electrode and support integrity of electrodes. The Si/d-Ti3C2 hybrids perform their promising prospect in lithium ion batteries.
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