Silicon-based composites are intensively pursued as one of the most promising anode materials for high-energy lithium-ion batteries (LIBs) owing to their ultrahigh theoretical capacity. However, the extended application of Si-based anode is still retarded by challenge of the poor initial coulombic efficiency (ICE), which will lead to the irreversible capacity loss of the full …
Developing lithium-ion batteries (LIBs)/sodium-ion batteries (SIBs) with high energy density is vital to meet increasingly demanding requirements for energy storage. The initial Coulombic efficiency (ICE) of LIBs and SIBs anode materials, which is associated with the amount of redundant cathode materials in full cells, is a key parameter for the improvement of energy …
However, N-doped carbon anodes still suffer from low N-doping levels and low initial Coulombic efficiency (ICE). In this study, high N-doped and low graphitic-N carbons (LGNCs) with enhanced ICE were synthesized by taking advantage of a denitrification strategy for graphitic carbon nitride (g-C 3 N 4 ).
Improved Initial Coulombic Efficiency of Optimized SiOx Via Simple Magnesiothermic Reduction As High-Performance Anode Material for Lithium-Ion Battery November 2020 ECS Meeting Abstracts MA2020 ...
Sn 4 P 3 @FLG composite anode material has a high tap density of 4.5 g cm −3 and a volumetric energy density of up to 3500 Ah dm −3. Sn 4 P 3 @FLG composed with commercial LiFePO 4 as a full battery, its initial reversible capacity is 778.0 mAh/g under 1 Ag −1 conditions, and the charge capacity of 657.2 mAh/g after 100 cycles.
Silicon suboxide (SiOx, x ≈ 1) is promising in serving as an anode material for lithium‐ion batteries with high capacity, but it has a low initial Coulombic efficiency (ICE) due to the irreversible formation of lithium silicates during the first cycle. In this work, we modify SiOx by solid‐phase Mg doping reaction using low‐cost Mg powder as a reducing agent. We show that Mg reduces ...
Abstract. To meet the ever-increasing demand for high-energy lithium-ion batteries (LIBs), it is imperative to develop next-generation anode materials. Compared to …
Hard carbon anodes tend to have substantially lower initial Coulombic efficiency than graphite anodes (typically <85% compared with >90%), owing to the high material surface...
However, N-doped carbon anodes still suffer from low N-doping levels and low initial Coulombic efficiency (ICE). In this study, high N-doped and low graphitic-N carbons (LGNCs) with enhanced ICE were synthesized by …
The low initial Coulombic efficiency (ICE) for the electrodes which stems from electrolyte decomposition and irreversible sodium uptake by the material itself, is one of the reasons limiting the ...
However, the detrimental issue of low initial Coulombic efficiency (ICE) toward SLIBs is causing more and more attention in recent years because ICE value is a core index in full battery design that profoundly determines the utilization of active materials and the weight of an assembled battery.
An insight into the initial Coulombic efficiency of carbon-based anode materials for potassium-ion batteries Author links open overlay panel Bo Wang a, Zeyu Zhang a, Fei Yuan a c, Di Zhang a, Qiujun Wang a, Wen Li a, Zhaojin Li a, Yimin A. Wu d, Wei Wang b
Recently, biomass-derived hard carbons have received attention due to their diverse sources, low cost, and easy availability [25]. As shown in Scheme 1, for achieving the highest capacity, the ...
Coulombic efficiency (CE) has been widely used in battery research as a quantifiable indicator for the reversibility of batteries. While CE helps to predict the lifespan of a lithium-ion battery ...
To meet the ever-increasing demand for high-energy lithium-ion batteries (LIBs), it is imperative to develop next-generation anode materials. Compared to conventional carbon-based anodes, Si …
Water mist, known for its high cooling efficiency, low cost, and clean, non-toxic properties, has been extensively studied and applied in the field of LIB as an effective and efficient active fire-extinguishing cooling technology (Liu et al., 2020b).The United States National Aeronautics and Space Administration (NASA) has developed a portable fire extinguishing …
Cathode materials affect capacity, energy, and efficiency, playing a major role in a battery''s performance, lifespan, and affordability. "Our cathode can be a game-changer," said Chen, whose team ...
Some strategies for improving low initial Coulombic efficiency are also presented. ... At present, although significant progress has been made in the research of anode materials, the low initial Coulombic efficiency (ICE) cannot be ignored. ... Such high ICE was helpful for enhancing the utilization rate of the cathode material in a full battery.
All-solid-state batteries using Si as the anode have shown promising performance without continual solid-electrolyte interface (SEI) growth. However, the low initial Coulombic efficiency (ICE) of Si limits their energy density. In this work, a prelithiation strategy was adopted to improve the ICE and conductivity of Si all-solid-state cells. Lithiated Si anodes …
Hard carbon stands out as the most promising candidate for anodes in sodium-ion battery. Nevertheless, addressing the challenges of low initial Coulombic efficiency and rate …
Recently, hard carbons have been extensively studied as anode materials for high-energy rechargeable batteries owing to their low costs, potential high capacities and talented rate capability. Nevertheless, they suffer a low initial Coulombic efficiency (ICE) problem which prohibits their broad practical application. Here we develop a facile prelithiation scheme for …
5 · In the first cycle (Fig. 6 a), NSFC exhibited initial charging and discharging capacities are 371.3 and 432.2 mAh/g, initial coulombic efficiency is 85.9 %, while NSC exhibited initial charging and discharging capacities are 203.9 and 325.2 mAh/g, initial coulombic efficiency is 62.7 % in the first cycle (Fig. S2).
Hard carbon (HC) has emerged as a promising anode material for sodium-ion batteries (SIBs), whereas it suffers from low initial Coulombic efficiency (ICE) and poor rate capability. Binders endowed with high electron/ion transport and strong mechanical integrity are expected to boost the practical application of HC anodes, which cannot be ...
Abstract. Herein, we present a new model to investigate the cause of the low initial coulombic efficiency of lithium-ion battery (LIB) porous carbon anodes and discover its …
All-solid-state batteries using Si as the anode have shown promising performance without continual solid-electrolyte interface (SEI) growth. However, the low initial Coulombic efficiency (ICE) of Si limits their energy density. In this work, a prelithiation strategy was adopted to improve the ICE and conductivity of Si all-solid-state cells.
The initial Coulombic efficiency (ICE) of electrode materials is closely related to the energy density of lithium-ion batteries (LIBs). However, some promising electrode materials for next generation LIBs suffer from low ICE, which inevitably hinders their practical application.
The initial Coulombic efficiency (ICE) of electrode materials is closely related to the energy density of lithium-ion batteries (LIBs). However, some promising electrode materials for next generation LIBs suffer from low ICE, which …
Sodium ion batteries have emerged as a potential low-cost candidate for energy storage systems due to the earth abundance and availability of Na resource. With the exploitation of high-performance electrode materials and in-depth mechanism investigation, the electrochemical properties of sodium ion batteries have been greatly improved. However, there are still various …
Sodium-ion batteries (SIBs) are deemed as the most potential candidates for grid-scale electric energy storage, due to the abundant Na resources and low cost [[1], [2], [3], [4]].Nevertheless, the lack of efficient anode materials is still a major hurdle to the commercial development, because the ubiquitous graphite anode in lithium-ion batteries is proved to be …
Fig. 1 a shows the preparation process of LJ-x. The water caltrop shell is first ground into powder and then turns from khaki into the black after carbonization. As displayed in Fig. 1 b–e, SEM images clearly show that the sheets composed by closely packed structure display rough surface morphology with a particle size ranging from 2 to 10 μm. . There is no …
Semantic Scholar extracted view of "Improving the initial Coulombic efficiency of SiO anode materials for lithium ion batteries by carbon coating and prelithiation" by Shi Ji et al. ... is promising in serving as an anode material for lithium‐ion batteries with high capacity, but it has a low initial Coulombic efficiency ... Auxiliary ball ...
The initial Coulombic efficiency (ICE) of LIBs and SIBs anode materials, which is associated with the amount of redundant cathode materials in full cells, is a key parameter for …
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