Boosting of reversible capacity delivered at a low voltage below 0.5 V in mildly expanded graphitized needle coke anode for a high-energy lithium ion battery

Decoupling the Effect of Electrolyte Infiltration on the Intercalation of Alkali Metal Ions in Highly Oriented Pyrolytic Graphite

“…This is probably because during the actual battery operation, some Li + entered the graphite layers without desolvation due to the presence of electrolyte, which makes further diffusion of lithium in graphite more difficult. In other studies, the diffusion coefficient of lithium in solvated embedded graphite is significantly lower than that usually measured, 23 which is consistent with the lower Li + diffusion coefficient obtained in this work.…”

Heteroatomic interface engineering of an octahedron VSe2–ZrO2/C/MXene composite derived from a MXene-MOF hybrid as a superior-performance anode for lithium-ion batteries

“…Benefitting from the pre-lithiation before assembly, the initial coulombic efficiency reaches 90.2%, indicating that the effective replenishment of lithium to anode can offset the irreversible lithium loss during the formation of the SEI layer in the initial cycle. 105,106 From Fig. 8c and d, the reversible capacity for the LFP‖VSe 2 –ZrO 2 /C/MXene full cell retains 113.2 mA h g −1 after 100 cycles at 100 mA g −1 and good rate capability is manifested with a capacity of 71 mA h g −1 at 500 mA g −1 , demonstrating a successful operation of the full cell.…”

Improving Natural Microcrystalline Graphite Performances by a Dual Modification Strategy toward Practical Application of Lithium Ion Batteries

“…The Raman spectrum analysis is further used to study the structure defect degree of MG, OEMGC-1, OEMGC-2, and OEMGC-3. As illustrated in Figure b, all the samples display the three obvious characteristic peaks located at 1352, 1578, and 2703 cm –1 , which belong to the D, G, and 2D bands, respectively. , The value of I D / I G is usually executed to express the graphitization degree of the carbonaceous materials. It can be clearly found that the I D / I G of MG, OEMGC-1, OEMGC-2, and OEMGC-3 are 0.14, 0.22, 0.28, and 0.37, which indicate a reduced graphitization degree due to the introduction of defects and disorders during the slightly oxidized-expanded process and modification of carbon coating layer.…”