Excellent performance of a modified graphite anode for lithium-ion battery application

Liao, Xingqun; Ding, Zhiying; Yin, Zhoulan

doi:10.1007/s11581-020-03577-7

Cited by 14 publications

(6 citation statements)

References 32 publications

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“…This is due to the SEI film was formed during the first circle, which inhibited the decomposition of the electrolyte 17 . There are three discharge platforms in the range of 0.005-0.2 V, indicating that the deintercalation/intercalation behavior of Li + in the graphite electrode has obvious segmentation, which is consistent with that reported in the literature 19,20 . Fig.…”

Section: Resultssupporting

confidence: 91%

Diffusion coefficient analysis of aluminum electrolysis spent cathode as anode material for lithium-ion battery

Huang

Peng

et al. 2022

Ionics

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The aluminum electrolysis spent cathode (SC) was treated by hydrothermal method and used as anode material for lithium-ion battery. The purified SC material shows excellent electrochemical performance. In order to understand the diffusion behavior of Li + in the SC electrode, the diffusion coefficient of Li + in the SC electrode was systematically analyzed by galvanostatic intermittent titration technique (GITT), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The results show that the diffusion coefficient (D Li + ) of Li + in SC electrode is calculated by CV is 2.2292×10 -11 cm 2 •s -1 , which is calculated by GITT and EIS ranges are 4.2286×10 -13 -2.9667×10 -10 cm 2 •s -1 , 4.05×10 -13 -3.87×10 -12 cm 2 •s -1 , respectively. SC electrode exhibits better Li + diffusion kinetics compared to commercial graphite (CG). In addition, the full cell of LiNi0.5Co0.2Mn0.3O2/SC also shows excellent cycle performance. After 80 cycles at 1 C (1 C=172 mA•g -1 ), the specific discharge capacity of LiNi0.5Co0.2Mn0.3O2/SC full-cell can reach 94.7 mAh•g -1 , and the capacity retention can reach 98.13%. The fast lithium-ion diffusion rate and high discharge capacity provide a feasible direction for the high value utilization of aluminum electrolysis spent cathode.

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Section: Resultssupporting

confidence: 91%

Diffusion coefficient analysis of aluminum electrolysis spent cathode as anode material for lithium-ion battery

Huang

Peng

et al. 2022

Ionics

View full text Add to dashboard Cite

show abstract

“…This is due to the SEI film was formed during the first circle, which inhibited the decomposition of the electrolyte . There are three discharge platforms in the range of 0.005-0.2 V, indicating that the deintercalation/intercalation behavior of Li + in the graphite electrode has obvious segmentation, which is consistent with that reported in the literature 19,20 . Fig.…”

Section: Resultssupporting

confidence: 91%

Diffusion Coefficient Analysis of Aluminum Electrolysis Spent Cathode as Anode Material For Lithium-ion Battery

Huang

Peng

et al. 2021

Preprint

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The aluminum electrolysis spent cathode (SC) was treated by hydrothermal method and used as anode material for lithium-ion battery. The purified SC material shows excellent electrochemical performance. In order to understand the diffusion behavior of Li+ in the SC electrode, the diffusion coefficient of Li+ in the SC electrode was systematically analyzed by galvanostatic intermittent titration technique (GITT), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The results show that the diffusion coefficient (DLi+) of Li+ in SC electrode is calculated by CV is 2.2292×10-11 cm2·s-1, which is calculated by GITT and EIS ranges are 4.2286×10-13-2.9667×10-10 cm2·s-1, 4.05×10-13-3.87×10-12 cm2·s-1, respectively. SC electrode exhibits better Li+ diffusion kinetics compared to commercial graphite (CG). In addition, the full cell of LiNi0.5Co0.2Mn0.3O2/SC also shows excellent cycle performance. After 80 cycles at 1 C (1 C=172 mA·g-1), the specific discharge capacity of LiNi0.5Co0.2Mn0.3O2/SC full-cell can reach 94.7 mAh·g-1, and the capacity retention can reach 98.13%. The fast lithium-ion diffusion rate and high discharge capacity provide a feasible direction for the high value utilization of aluminum electrolysis spent cathode.

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“…Graphite with high porosity and larger interlayer spacing can meet the fast-charging requirement by improving lithium diffusion kinetics and relieving the stress on the graphite matrix due to the intercalation of lithium-ions. Several approaches (oxidizing the surface, increasing the interlayer distance, creating pores, coating the surface to counteract the volume expansion) have been tried to modify the graphite structure to enhance the fast-charging performance. ,− However, these approaches either do not meet the required criteria or are economically not viable to apply on already costly graphite. Our group has developed the low-temperature electrochemical transformation of amorphous carbon precursors to graphite ,, with high crystallinity, porosity with a highly tunable nanoflake architecture, and interlayer spacing that can facilitate faster lithium diffusion and relieve the stress created by ion intercalation.…”

Section: Introductionmentioning

confidence: 99%

Low-Cost Transformation of Biomass-Derived Carbon to High-Performing Nano-graphite via Low-Temperature Electrochemical Graphitization

Thapaliya

Luo

Halstenberg

et al. 2021

ACS Appl. Mater. Interfaces

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Graphite, an essential component of energy storage devices, is traditionally synthesized via an energy-intensive thermal process (Acheson process) at ∼3300 K. However, the battery performance of such graphite is abysmal under fast-charging conditions, which is deemed essential for the propulsion of electric vehicles to the next level. Herein, a low-temperature electrochemical transformation approach has been demonstrated to afford a highly crystalline nano-graphite with the capability of tuning interlayer spacing to enhance the lithium diffusion kinetics in molten salts at 850 °C. The essence of our strategy lies in the effective electrocatalytic transformation of carbon to graphite at a lower temperature that could significantly increase the energy savings, reduce the cost, shorten the synthesis time, and replace the traditional graphite synthesis. The resulting graphite exhibits high purity, crystallinity, a high degree of graphitization, and a nanoflake architecture that all ensure fast lithium diffusion kinetics (∼2.0 × 10–8 cm2 s–1) through its nanosheet. Such unique features enable outstanding electrochemical performance (∼200 mA h g–1 at 5C for 1000 cycles, 1C = 372 mA g–1) as a fast-charging anode for lithium-ion batteries. This finding paves the way to make high energy-density fast-charging batteries that could boost electromobility.

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Excellent performance of a modified graphite anode for lithium-ion battery application

Cited by 14 publications

References 32 publications

Diffusion coefficient analysis of aluminum electrolysis spent cathode as anode material for lithium-ion battery

Diffusion coefficient analysis of aluminum electrolysis spent cathode as anode material for lithium-ion battery

Diffusion Coefficient Analysis of Aluminum Electrolysis Spent Cathode as Anode Material For Lithium-ion Battery

Low-Cost Transformation of Biomass-Derived Carbon to High-Performing Nano-graphite via Low-Temperature Electrochemical Graphitization

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