Electrochemical Behavior of Li-Cu Composite Powder Electrodes in Lithium Metal Secondary Batteries

Sun Woo Hwang, Jee Ho Yom, Sung Man Cho, Woo Young Yoon

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


A new type of Li-Cu composite powder electrode (Li-Cu CE) was fabricated via mechanical blending of Li and Cu powders. The new Li-Cu electrode is capable of replacing Li metal anodes in Li metal secondary battery (LMSB) systems without exhibiting typical intrinsic problems such as dendrite growth, volume change, and electrolyte depletion. Thus, Li-Cu CE cells can offer longer lives and very high capacities. The Li particles in Li-Cu CEs are surrounded by Cu particles and thus cannot form networks that extend throughout the electrode. Isolation of the Li powder enables the control of Li+ ion migration during deposition and dissolution. The Li-Cu CE can thus prevent problematic volume changes and dendrite growth on the anode during battery operation. Symmetric Li-Cu CE cells are stable for up to 200 cycles at a rate of 3 C, and the anode capacity is estimated to be 1158 mAh g-1 (Li+ ion usage of 30%). These results are thought to represent a largest anode capacity for Li-metal in LMSBs.

Original languageEnglish
Pages (from-to)22530-22538
Number of pages9
JournalACS Applied Materials and Interfaces
Issue number27
Publication statusPublished - 2017 Jul 12

Bibliographical note

Funding Information:
This study was supported by a grant from the National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (2016R1A2B3009481), and the Ministry of Knowledge Economy (MKE, Korea) (10045221) SEM microstructural examinations were performed at the Korea Basic Science Institute, Seoul Center.

Publisher Copyright:
© 2017 American Chemical Society.


  • Li metal secondary batteries
  • composites
  • electrodes
  • lithium metal
  • microstructures

ASJC Scopus subject areas

  • General Materials Science


Dive into the research topics of 'Electrochemical Behavior of Li-Cu Composite Powder Electrodes in Lithium Metal Secondary Batteries'. Together they form a unique fingerprint.

Cite this