First-principles design of a borocarbonitride-based anode for superior performance in sodium-ion batteries and capacitors (original) (raw)
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Nanomaterials
Synergism between the alloy materials and the carbon support matrix, in conjunction with the binder and electrolyte additives, is of utmost importance when developing sodium-ion batteries as viable replacements for lithium-ion batteries. In this study, we demonstrate the importance of the binder and carbon support matrix in enhancing the stabilities, cyclabilities, and capacity retentions of bimetallic anodes in sodium-ion batteries. SbTe electrodes containing 20%, 30%, and 40% carbon were fabricated with polyvinylidene fluoride (PVDF) and polyacrylic acid (PAA) binders, and electrochemically evaluated at a current rate of 100 mA g−1 using electrolytes with 0%, 2%, and 5% added fluoroethylene carbonate (FEC). The electrodes with the PVDF binder in cells with 5% FEC added to the electrolyte showed capacity retentions that increased with increasing carbon percentage, delivering reversible capacities of 34, 69, and 168 mAh g−1 with 20%, 30%, and 40% carbon; these electrodes retained 8....
Boron and phosphorous co-doped porous carbon as high-performance anode for sodium-ion battery
Solid State Ionics, 2020
Sodium-ion batteries (SIBs) have attracted extensive attention as the important replacement for lithium-ion batteries, due to the nature abundance of sodium sources. The key to high-performance SIBs lies in appropriate anode material with sufficient space and sites for the diffusion and adsorption of sodium ion (Na +). Heteroatom doping in carbon has proven to be an effective strategy to improve the electrochemical performance of carbonbased anodes for SIB. The feasible preparation of doped carbon is essential for the development of SIBs. Here, boron (B) and phosphorous (P) co-doped honeycomb-like carbon (BPC) has been synthesized by one-step pyrolysis of onium salts containing B and P. Benefiting from dual doping of B and P in carbon, the increased layer space, defects and electrical conductivity of BPC enhance the adsorption capability of Na + , mass transport and charge diffusion. The formed porous structure in BPC can promote the electrolyte penetration as well as buffer the volume changes during cycling. When employed as the anode material for SIBs, high storage capacity and excellent cycle life have been enabled. This contribution paves a feasible and controlled approach to prepared heteratom-doped carbons for Na + storage.
State-of-the-Art Electrode Materials for Sodium-Ion Batteries
Materials
Sodium-ion batteries (SIBs) were investigated as recently as in the seventies. However, they have been overshadowed for decades, due to the success of lithium-ion batteries that demonstrated higher energy densities and longer cycle lives. Since then, the witness a re-emergence of the SIBs and renewed interest evidenced by an exponential increase of the publications devoted to them (about 9000 publications in 2019, more than 6000 in the first six months this year). This huge effort in research has led and is leading to an important and constant progress in the performance of the SIBs, which have conquered an industrial market and are now commercialized. This progress concerns all the elements of the batteries. We have already recently reviewed the salts and electrolytes, including solid electrolytes to build all-solid-state SIBs. The present review is then devoted to the electrode materials. For anodes, they include carbons, metal chalcogenide-based materials, intercalation-based and...
Journal of The Electrochemical Society
Two-dimensional (2D) materials are a promising candidate for the anode material of lithium-ion battery (LIB) and sodium-ion battery (NIB) for their unique physical and chemical properties. Recently, a honeycomb borophene (h-borophene) has been fabricated by molecular beam epitaxy (MBE) growth in ultra high vacuum. Here, we adopt the first-principles density functional theory calculations to study the performance of monolayer (ML) h-borophene as an anode material for the LIB and NIB. The binding energies of the ML h-borophene-Li/Na systems are all negative, indicating a steady adsorption process. The diffusion barriers of the Li and Na ions in h-borophene are 0.53 and 0.17 eV, respectively, and the anode overall open-circuit voltages for the LIB and NIB are 0.747 and 0.355 V, respectively. The maximum theoretical storage capacity of h-borophene is 1860 mAh·g−1 for NIB and up to 5268 mAh·g−1 for LIB. The latter is more than 14 times higher than that of commercially used graphite (372 ...
Molecules, 2021
The goal of this article is to highlight crucial breakthroughs in solid-state ionic conduction in borohydrides for battery applications. Borohydrides, Mz+BxHy, form in various molecular structures, for example, nido-M+BH4; closo-M2+B10H10; closo-M2+B12H12; and planar-M6+B6H6 with M = cations such as Li+, K+, Na+, Ca2+, and Mg2+, which can participate in ionic conduction. This overview article will fully explore the phase space of boron–hydrogen chemistry in order to discuss parameters that optimize these materials as solid electrolytes for battery applications. Key properties for effective solid-state electrolytes, including ionic conduction, electrochemical window, high energy density, and resistance to dendrite formation, are also discussed. Because of their open structures (for closo-boranes) leading to rapid ionic conduction, and their ability to undergo phase transition between low conductivity and high conductivity phases, borohydrides deserve a focused discussion and further ...
A Mini Review on Progress of Nanostructured Anode Materials for Sodium Ion Battery
Crimson Publishers, 2023
The powerful and rapid growth of Lithium-ion batteries in the field of secondary batteries has resulted in a shortage of lithium resources, which has led to an increase in the price of batteries. As a result of these factors, sodium-ion batteries, also known as NIBs, have developed into one of the most appropriate options for large-scale energy storage devices. These batteries have a low cost, limitless sodium reserves and a working principle that is similar to that of LIBs. Na-ion batteries, also known as NIBs, have gained a lot of attention as a potential excellent candidate for grid-scale energy storage systems due to the abundance and accessibility of Na as well as its electrochemistry that is very similar to that of the well-established LIBs technology. This review article provides a concise assessment of the most recent developments in the field of electrode materials for NIBs, including the discovery of new electrode materials and the Na storage mechanisms possessed by those materials.
Sodium-Ion Battery Materials and Electrochemical Properties Reviewed
Advanced Energy Materials, 2018
become the electricity storage system of choice over the past 26 years, combining superb energy density, compact and lightweight designs, and outstanding cycle life compared to other rechargeable battery technologies. [2] Despite the commercial success and proliferation of LIB in consumer electronics and recently in battery electric vehicles, LIBs are believed to be too expensive for stationary, large-scale, electrical energy storage (EES) and, in addition, there are concerns on the resource availability of LIB components. [3,4] Historically, the technology of choice for EES applications is pumped-hydro which continues to dominate due to very large unit sizes, accounting for over 95% of the total rated power globally (data derived from the US DOE, global energy storage database). [5,6] However, the number of new pumpedhydro installations is dwindling as a result of its specific geographic and geological requirements. [7] A technological incentive is therefore to find alternative EES options that are installation flexible, cost effective, energy efficient, and environmentally benign in order to match the rapid growth in intermittent renewable energy sources. The properties of electrochemical energy storage technologies are, in general, ideal for a grid scale EES. LIBs in particular have the ability to respond rapidly to load changes, have a high energy density combined with an excellent Coulombic efficiency, exhibit low standby losses, and have modular designs that facilitate upscaling. [7,8] Yet, faced with the aforementioned resource constraints and adverse ecological hazards upon disposal (due to toxic elements), the ability of LIBs to meet large-scale EES demands, remains uncertain. [7] The needs and challenges outlined above have motivated the research for an alternative, scalable battery technology, composed of cheap, abundant, and environmentally benign materials to match the performance and economical success of LIBs. Given the relative abundance of elemental sodium (compared to lithium in the Earth's crust, see Figure 1) and the low electrochemical potential of Na (−2.71 V vs the standard hydrogen electrode, SHE), which is only 330 mV above that of Li, rechargeable batteries based on sodium hold great promise to meet large-scale EES demands. For example, high-temperature ZEBRA cells [9] based on the Na/NiCl 2 system and sodium sulfur cells [10] have already demonstrated the potential of sodium-based electrochemical energy storage. These batteries The demand for electrochemical energy storage technologies is rapidly increasing due to the proliferation of renewable energy sources and the emerging markets of grid-scale battery applications. The properties of batteries are ideal for most electrical energy storage (EES) needs, yet, faced with resource constraints, the ability of current lithium-ion batteries (LIBs) to match this overwhelming demand is uncertain. Sodium-ion batteries (SIBs) are a novel class of batteries with similar performance characteristics to LIBs. Since they are composed of earth-abundant elements, cheaper and utility scale battery modules can be assembled. As a result of the learning curve in the LIB technology, a phenomenal progression in material development has been realized in the SIB technology. In this review, innovative strategies used in SIB material development, and the electrochemical properties of anode, cathode, and electrolyte combinations are elucidated. Attractive performance characteristics are herein evidenced, based on comparative gravimetric and volumetric energy densities to state-of-the-art LIBs. In addition, opportunities and challenges toward commercialization are herein discussed based on patent data trend analysis. With extensive industrial adaptations expected, the commercial prospects of SIBs look promising and this once discarded technology is set to play a major role in EES applications.