Insight into the improvement of rate capability and cyclability in LiFePO4/polyaniline composite cathode

Chen, Weimin; Qie, Long; Yuan, Lixia; Xia, Sheng-An; Hu, Xianluo; Zhang, Wuxing; Huang, Yunhui

doi:10.1016/j.electacta.2010.12.041

Cited by 78 publications

(51 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several different electroactive polymers such as polyaniline and polypyrrole were proposed to replace PVDF. These multifunctional binders improved the rate capability and cycle life of the LiFePO 4 which has an intrinsically poor electronic conductivity [151][152][153][154]. The polyaniline binder also improved the irreversible capacity loss during the first cycle in a graphite anode [155].…”

Section: Bindermentioning

confidence: 95%

A Review on Nanocomposite Materials for Rechargeable Li-ion Batteries

2017

View full text Add to dashboard Cite

Li-ion batteries are the key enabling technology in portable electronics applications, and such batteries are also getting a foothold in mobile platforms and stationary energy storage technologies recently. To accelerate the penetration of Li-ion batteries in these markets, safety, cost, cycle life, energy density and rate capability of the Li-ion batteries should be improved. The Li-ion batteries in use today take advantage of the composite materials already. For instance, cathode, anode and separator are all composite materials. However, there is still plenty of room for advancing the Li-ion batteries by utilizing nanocomposite materials. By manipulating the Li-ion battery materials at the nanoscale, it is possible to achieve unprecedented improvement in the material properties. After presenting the current status and the operating principles of the Li-ion batteries briefly, this review discusses the recent developments in nanocomposite materials for cathode, anode, binder and separator components of the Li-ion batteries.

show abstract

Section: Bindermentioning

confidence: 95%

A Review on Nanocomposite Materials for Rechargeable Li-ion Batteries

2017

View full text Add to dashboard Cite

show abstract

“…On the other hand, as compared with carbon or some other conducting polymers, such as polypyrrole (PPy) and polythiophene (PT), PANI shows a more compatible polarity with the electrolyte via the H bonds. In addition, the capacity of PANI is usually higher than those of PPy and PT, which is strongly dependent on doping [9]. PANI can mediate the polarity difference between the cathode particles and the electrolyte, promote electrolyte permeation into the surface of the active particles, and hence enhance Li + insertion/extraction during a charge/discharge process.…”

Section: Introductionmentioning

confidence: 99%

“…PANI can mediate the polarity difference between the cathode particles and the electrolyte, promote electrolyte permeation into the surface of the active particles, and hence enhance Li + insertion/extraction during a charge/discharge process. Thereby, incorporating LiFePO 4 with conductive PANI is an attractive route to improve both electronic conductivity and Li + -ion diffusion [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of polyaniline to enhance lithium iron phosphate conductivity

Wijayati¹,

Susanti²,

Rahayu³

et al. 2016

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. Lithium cobalt oxide is commonly used as secondary battery. One of the disadvantages of lithium cobalt oxide is highly toxicity waste. One of the promising cathode is lithium iron phosphate (LiFePO4). But it has poor conductivity (10-9 S/cm), so conductive material must be added to improve its conductivity. The present paper aims to study the effect of Polyaniline (PANI) and PVDF to enhance lithium iron phosphate conductivity. PANI was prepared through interfacial polymerization. Hydrochloric acid, ammonium persulfate, and toluene were used as dopant, oxidant, and organic solvent respectively. Their morphology was confirmed by scanning electron microscopy (SEM), molecular structure was investigated by Infrared Spectroscopy, and conductivity was confirmed by four point probes method. The composite products have conductivities in the range 9.14 x 10-3 -6.2x10-1 S/cm. This result is expected to provide an alternative conductive material that can improve the conductivity of lithium iron phosphate, as well as the alternative cathode which is environmental friendly, and no harmful waste.

show abstract

“…[2][3][4][5] LiFePO 4 /C composite has been successfully put into practice by carbon coating, which is a good solution to enhance the conductivity of pristine LiFePO 4 . [6][7][8] Aiming to improve the electrochemical properties, different precursors, such as FePO 4 , Fe 2 O 3 , FeC 2 O 4 have been used as precursors to prepare LiFePO 4 /C composite.…”

Section: Introductionmentioning

confidence: 99%

Interface Synthesis of FePO4 with Different Morphologies and Effect of Morphology on the Electrochemical Performance of LiFePO4/C

Feng

Tianyuan

2015

Kem. Ind.

View full text Add to dashboard Cite

In our work, interface synthesis method was put forward to prepare FePO 4 with different morphologies, and the effect of morphology on the preparation and electrochemical performance of LiFePO 4 /C was investigated. The results showed that the morphology of FePO 4 was amorphous and monoclinic at the treatment temperatures of 30 °C and 80 °C, respectively. LiFePO 4 /C prepared from two crystal precursors were both hemispherical hollow with an olivine crystal structure. LiFePO 4 /C produced from the monoclinic structured precursor exhibited smaller-sized morphology and better electrochemical performance, and its discharge capacities were 155.9 mA h g −1 and 141.8 mA h g −1 at the rates of 0.1 C and 1 C, respectively. After 150 cycles, its capacity retention was about 97.8 % and 95.1 % at 0.1 C and 1 C, respectively.

show abstract

Insight into the improvement of rate capability and cyclability in LiFePO4/polyaniline composite cathode

Cited by 78 publications

References 27 publications

A Review on Nanocomposite Materials for Rechargeable Li-ion Batteries

A Review on Nanocomposite Materials for Rechargeable Li-ion Batteries

Effect of polyaniline to enhance lithium iron phosphate conductivity

Interface Synthesis of FePO4 with Different Morphologies and Effect of Morphology on the Electrochemical Performance of LiFePO4/C

Contact Info

Product

Resources

About