Efficient stress alleviation and interface regulation in Cu4SiP8-CNT hybrid for ultra-durable Li and Na storage

Mahboobeh Nazarian-Samani, Masoud Nazarian-Samani, Safa Haghighat-Shishavan, Kwang Bum Kim

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


In the search for new anode materials having a high theoretical capacity, satisfactory redox potentials, and inexpensive, abundant components for use in high-performance metal-ion batteries, ternary copper phosphosilicide (Cu4SiP8) is herein explored for the first time as a highly promising anode electrode material for Li-ion and Na-ion batteries (LIBs and NIBs). In a hybrid architecture with a defective carbon network, the nanoparticles can be fully embedded and robust chemical bonds permanently constructed, thus firmly protecting the integrity of the electrode against dramatic changes in volume, boosting electron/ion transport, and regulating the reaction pathways. Specifically, these work to inhibit the formation of undesirable LiP and crystalline Li3.75Si phases in LIBs, promote the stable reaction of Si with Na+ in NIBs, and guarantee the reversible regeneration of Cu4SiP8 during recharging. Thus, the electrode delivered a first discharge capacity of 1764 mA h g−1 (Coulombic efficiency; CE: 92.29%) at 0.1 A g−1 and demonstrated superb capacity retention at 5 A g−1 for 1200 cycles in an LIB. In an NIB, the hybrid electrode exhibited a high first discharge capacity and CE (796 mA h g−1 and 81.78% at 0.1 A g−1), outstanding cyclic stability (>700 cycles, >75% retention), and exceptional rate capability under symmetric/asymmetric conditions.

Original languageEnglish
Article number106134
JournalNano Energy
Publication statusPublished - 2021 Aug

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government ( MSIT ) (No. 2019R1A2C1088424 ).

Publisher Copyright:
© 2021 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering


Dive into the research topics of 'Efficient stress alleviation and interface regulation in Cu4SiP8-CNT hybrid for ultra-durable Li and Na storage'. Together they form a unique fingerprint.

Cite this