Flexible and planar graphene conductive additives for lithium-ion batteries

Su, Fangyuan; You, Chenjiang; He, Yan‐Bing; Lv, Wei; Cui, Wei; Jin, Fengmin; Li, Baohua; Yang, Quan‐Hong; Kang, Feiyu

doi:10.1039/c0jm01633k

Cited by 281 publications

(144 citation statements)

References 34 publications

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“…The R SEI and CPE 1 elements, corresponding to the high-frequency semicircle, represent the SEI layer resistance and dielectric relaxation capacitance, respectively. The R ct and CPE 2 elements, corresponding to the middle-frequency semicircle, represent the charger transfer resistance between the electrolyte and the electrode and the associated double-layer capacitance, respectively, and R w is referred to the Warburg impedance, related to the Li-ion diffusion in the bulk electrode [38]. According to the fitting results, the values for R SEI and R ct of the bare SnSb electrode are 27.5 and 63.7 , respectively, whereas the SnSb/graphene electrode shows low R SEI and R ct values of 12.4 and 40.2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Li-storage properties of SnSb/graphene hybrid nanostructure by a facile one-step solvothermal route

Xie

Song

Zheng

et al. 2011

International Journal of Smart and Nano Materials

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) and the negatively charged graphene oxide plays an important role in the uniform distribution of the SnSb particles on the graphene sheets. The electrochemical Li-storage properties of the nanocomposite were investigated as a potential high-capacity anode material for Li-ion batteries. The results show that the nanocomposite exhibits an obvious enhanced Li-storage performance compared with bare SnSb. The improvement of the electrochemical performance could be attributed to the formation of two-dimensional conductive networks, homogeneous dispersion and confinement of SnSb nanoparticles and the enhanced wetting of active material with the electrolyte for increased specific surface area by the introduction of graphene into SnSb nanoparticles. Li-ion chemical diffusion coefficient and ac impedance were measured to understand the underlying mechanism for the improved electrochemical performance.

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Section: Resultsmentioning

confidence: 99%

Preparation and Li-storage properties of SnSb/graphene hybrid nanostructure by a facile one-step solvothermal route

Xie

Song

Zheng

et al. 2011

International Journal of Smart and Nano Materials

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“…The capacity retention was only 80% of the initial capacity at 0.1 C after 100 cycles. The poor cycling performance may be caused by some side reactions that occurred at high voltage of 4.8 V between the electrolyte and the nanocomposite [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Li3V2(PO4)3@C/graphene composite with improved cycling performance as cathode material for lithium-ion batteries

Zhang

Wang

Cai

et al. 2013

Electrochimica Acta

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“…With the help of graphene, the electrons could be transferred easily between the LiFePO 4 particles and current collectors, reducing the internal resistance and enhancing the power density of the batteries [95,96].…”

Section: Preparation Of Compositesmentioning

confidence: 99%

Research Progress in Improving the Rate Performance of LiFePO4 Cathode Materials

Deng

Wang

Líu³

et al. 2014

Nano-Micro Lett

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Abstract:Olivine lithium iron phosphate (LiFePO4) is considered as a promising cathode material for high power-density lithium ion battery due to its high capacity, long cycle life, environmental friendly, low cost, and safety consideration. The theoretical capacity of LiFePO4 based on one electron reaction is 170 mAh g −1 at the stable voltage plateau of 3.5 V vs. Li/Li + . However, the instinct drawbacks of olivine structure induce a poor rate performance, resulting from the low lithium ion diffusion rate and low electronic conductivity.In this review, we summarize the methods for enhancing the rate performance of LiFePO4 cathode materials, including carbon coating, elements doping, preparation of nanosized materials, porous materials and composites, etc. Meanwhile, the advantages and disadvantages of above methods are also discussed.

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Flexible and planar graphene conductive additives for lithium-ion batteries

Cited by 281 publications

References 34 publications

Preparation and Li-storage properties of SnSb/graphene hybrid nanostructure by a facile one-step solvothermal route

Preparation and Li-storage properties of SnSb/graphene hybrid nanostructure by a facile one-step solvothermal route

Li3V2(PO4)3@C/graphene composite with improved cycling performance as cathode material for lithium-ion batteries

Research Progress in Improving the Rate Performance of LiFePO4 Cathode Materials

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