Electrochemical performance of freestanding LiFePO4/MWCNT composite electrodes and its ex situ studies

Amarsingh Bhabu Kanagaraj, Prerna Chaturvedi, Boo Hyun An, Sultan AlDahmani, Hamed Fadaq, Daniel S. Choi

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Lithium iron phosphate (LiFePO4) micro-particles were synthesized using hydrothermal method with two different Fe precursors (FeSO4 and FeCl2). Freestanding and flexible LiFePO4/multi-walled carbon nanotube (MWCNT) composite electrodes were prepared using surface-engineered tape-casting method. FeSO4 precursor-based composite electrode exhibited improved electrical and electrochemical performances compared with the FeCl2 precursor-based composite electrode. A maximum electrical conductivity of 1.54 × 103 Scm−1 has been obtained for FeSO4 precursor-based LiFePO4 micro-particles at 75 °C. LiFePO4/MWCNT composite electrode exhibited better capacity (~ 126 mAhg−1 at 0.1 C rate) and electrochemical reversibility in line with the results on the literature. Moreover, after 100 cycles at the rate of 1 C, specific capacity of around 105 mAhg−1 and retention rate of ~ 99% were achieved. The improved performance of LiFePO4/MWCNT composite electrode after 100 cycles leads to analyze extensive electrochemical properties and ex situ studies. [Figure not available: see fulltext.]

Original languageBritish English
Pages (from-to)115-125
Number of pages11
Issue number1
StatePublished - 1 Jan 2020


  • Ex situ studies
  • Freestanding electrodes
  • Li-ion diffusion coefficient
  • LiFePO


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