Abstract
Rechargeable aqueous zinc-ion batteries are a promising candidate for next-generation energy storage devices. However, their practical application is limited by the severe safety issue ...caused by uncontrollable dendrite growth on zinc anodes. Here we develop faceted titanium dioxide with relatively low zinc affinity, which can restrict dendrite formation and homogenize zinc deposition when served as the protective layer on zinc anodes. The as-prepared zinc anodes can be stripped and plated steadily for more than 460 h with low voltage hysteresis and flat voltage plateau in symmetric cells. This work reveals the key role of crystal orientation in zinc affinity and its internal mechanism is suitable for various crystal materials applied in the surface modification of other metal anodes such as lithium and sodium.
Aqueous zinc‐ion batteries have rapidly developed recently as promising energy storage devices in large‐scale energy storage systems owing to their low cost and high safety. Research on suppressing ...zinc dendrite growth has meanwhile attracted widespread attention to improve the lifespan and reversibility of batteries. Herein, design methods for dendrite‐free zinc anodes and their internal mechanisms are reviewed from the perspective of optimizing the host–zinc interface and the zinc–electrolyte interface. Furthermore, a design strategy is proposed to homogenize zinc deposition by regulating the interfacial electric field and ion distribution during zinc nucleation and growth. This Minireview can offer potential directions for the rational design of dendrite‐free zinc anodes employed in aqueous zinc‐ion batteries.
Electrons and ions: Aqueous zinc‐ion batteries are promising candidates for the next‐generation energy storage system. This Minireview summarizes the recent developments in the modification of the host–zinc and the zinc–electrolyte interfaces. Design strategies to fabricate dendrite‐free zinc anodes by optimizing the interfacial electron and ion distribution are discussed.
Demand for energy in day to day life is increasing exponentially. However, existing energy storage technologies like lithium ion batteries cannot stand alone to fulfill future needs. In this regard, ...potassium ion batteries (KIBs) that utilize K ions in their charge storage mechanism have attracted considerable attention due to their unique properties and are therefore established as one of the future battery systems of interest among the scientific community. Nevertheless, the development and identification of appropriate electrode materials is very essential for practical applications. This review features the current development in KIBs electrode and electrolyte materials, the present challenges facing this technology (in the commercial aspect), and future aspects to develop fully functional KIBs. The potassium storage mechanisms, evolution of the KIBs, and the advantages and disadvantages of each category of materials are included. Additionally, various approaches to enhance the electrochemical performances of KIBs are also discussed. This review is not only an amalgamation of different viewpoints in literature, but also contains concise perspectives and strategies. Moreover, the potential emergence of a novel class of K‐based dual ion batteries is also analyzed for the first time.
The development and identification of appropriate electrode and electrolyte materials is very essential for practical potassium ion storage applications. Hence, an understanding of the current development in potassium‐based electrode and electrolyte materials and the present performance challenges is critical.
The ever‐increasing demand of lithium‐ion batteries (LIBs) caused by the rapid development of various electronics and electric vehicles will be hindered by the limited lithium resource. Thus ...sodium‐ion batteries (SIBs) have been considered as a promising potential alternative for LIBs owing to the abundant sodium resource and similar electrochemical performances. In recent years, significant achievements regarding anode materials which restricted the development of SIBs in the past decades have been attained. Significantly, the sodium storage feasibility of carbon materials with abundant resource, low cost, nontoxicity and high safety has been confirmed, and extensive investigation have demonstrated that the carbonaceous materials can become promising electrode candidates for SIBs. In this review, the recent progress of the sodium storage performances of carbonaceous materials, including graphite, amorphous carbon, heteroatom‐doped carbon, and biomass derived carbon, are presented and the related sodium storage mechanism is also summarized. Additionally, the critical issues, challenges and perspectives are provided to further understand the carbonaceous anode materials.
Carbon materials have been considered as promising anode candidate for sodium‐ion batteries (SIBs) due to their unique merits. Tremendous efforts have been made to exploit appropriate carbon materials and unveil the corresponding sodium storage mechanism. Here, recent progress, challenges, and prospects of carbon anode materials for SIBs are presented.
Abstract
This review discussed the dilemma of small data faced by materials machine learning. First, we analyzed the limitations brought by small data. Then, the workflow of materials machine ...learning has been introduced. Next, the methods of dealing with small data were introduced, including data extraction from publications, materials database construction, high-throughput computations and experiments from the data source level; modeling algorithms for small data and imbalanced learning from the algorithm level; active learning and transfer learning from the machine learning strategy level. Finally, the future directions for small data machine learning in materials science were proposed.
Carbonaceous materials have been proved to be promising materials for energy storage. Heteroatom doping, especially N doping, could further promote their electrochemical performance, and the type of ...doped N configuration plays a key role in determining the reactivity of doped carbon. However, achieving a high proportion of active N (pyridinic N) in N doped carbon is still a big challenge. In this work, we successfully tuned the N species and achieved high-level pyridinic N in carbon via constructing a three-dimensional (3D) honeycomb-like structure in conjunction with phosphorus doping. The 3D porous structure with sufficient pore defects and edges provides the preconditions for the formation of pyridinic N, and the subsequent P-doping leads to more open edge sites, which further facilitate the formation of pyridinic N. This modification greatly promoted the reactivity of the carbon framework, contributing to rapid interfacial K+ adsorption reactions. The as-obtained P-doped N-rich honeycomb-like carbon thus achieved ultrahigh reversible capacity and outstanding rate capability (with capacities of 419.3 and 270.4 mA h g−1 obtained at 100 and 1000 mA g−1, respectively). This outstanding performance demonstrates that adjusting the proportion of active N in N-doped carbon offers a promising approach toward excellent N-doped carbon materials for energy storage systems.
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•P-doped N-rich honeycomb-like carbon (PNHC) is designed for potassium storage.•The edge-site sufficient structure is beneficial for the formation of pyridinic-N.•P doping introduce more defects and further promote the content of pyridinic-N.•PIBs using PNHC exhibits superior potassium storage performance.
Recently, sodium‐ion batteries (SIBs) are extensively explored and are regarded as one of the most promising alternatives to lithium‐ion batteries for electrochemical energy conversion and storage, ...owing to the abundant raw material resources, low cost, and similar electrochemical behavior of elemental sodium compared to lithium. Metal–organic frameworks (MOFs) have attracted enormous attention due to their high surface areas, tunable structures, and diverse applications in drug delivery, gas storage, and catalysis. Recently, there has been an escalating interest in exploiting MOF‐derived materials as anodes for sodium energy storage due to their fast mass transport resulting from their highly porous structures and relatively simple preparation methods originating from in situ thermal treatment processes. In this Review, the recent progress of the sodium‐ion storage performances of MOF‐derived materials, including MOF‐derived porous carbons, metal oxides, metal oxide/carbon nanocomposites, and other materials (e.g., metal phosphides, metal sulfides, and metal selenides), as SIB anodes is systematically and completely presented and discussed. Moreover, the current challenges and perspectives of MOF‐derived materials in electrochemical energy storage are discussed.
Metal‐organic framework (MOF)‐derived materials are widely utilized as sodium ion battery anodes owing to their fast mass transport and simple preparation methods. Recent progress in MOF‐derived materials, including MOF‐derived porous carbons, metal oxides, metal oxide/carbon nanocomposites, and other materials (e.g., metal phosphides, metal sulfides, and metal selenides), for sodium energy storage is presented and discussed.
Carbonaceous materials are promising anode materials for alkali-metal ion batteries due to the abundant resource and high safety, while it is challenged by its low specific capacity and depressed ...rate capability in potassium-ion batteries (PIBs). To further explore the potassium storage properties of carbon materials and exploit high-performance carbon anode for PIBs, in this work, hollow nanostructured N-doped carbon (p-HNCs) is elaborately designed through the tailoring of carbon quantum dots (CQDs) for the first time. The detailed formation mechanism of hollow nanostructure is investigated and it is demonstrated that CQD micelles formed through hydrophobicity and lipophilicity are served not only as templates for the construction of hollow structure but also pore-forming agent for the generation of rich micro-tunnels, due to the decomposition and contraction of CQDs with releasing gases during the pyrolysis process. When applied for potassium storage, p-HNCs anode delivers high reversible specific capacities of 254 mAh g-1 at 0.1 A g-1 after 100 cycles and 160 mAh g-1 at 1.0 A g-1 after 800 cycles. Notably, a desirable rate capability of 145 mAh g-1 is observed at 4.0 A g-1, derived from surface-driven behaviors. Moreover, galvanostatic intermittent titration technique measurement quantifies the improved diffusion coefficient of p-HNCs, indicating its superior kinetic property. This work shows us the special application of CQDs in structure construction and a valuable strategy to design high-performance carbon anode for potassium-ion batteries and sodium-ion batteries.
Carbon quantum dot (CQD) micelles are applied for the first time to tailor the construction of hollow N-doped carbon, which is demonstrated for the enhanced performance of potassium storage. And splendid capacity of 160 mAh g−1 at 1.0 A g−1 after 800 cycles and desirable rate capability of 145 mAh g−1 are observed at 4.0 A g−1. Display omitted
•Hollow nanostructured N-doped carbon (p-HNCs) is designed.•Carbon quantum dots are served as neoteric templates and pore-forming agents.•Superb cyclic stability and rate capability are achieved for K-storage.
Exploring high‐rate electrode materials with excellent kinetic properties is imperative for advanced sodium‐storage systems. Herein, novel cubic‐like XFe (X = Co, Ni, Mn) Prussian blue analogs ...(PBAs), as cathodes materials, are obtained through as‐tuned ionic bonding, delivering improved crystallinity and homogeneous particles size. As expected, Ni‐Fe PBAs show a capacity of 81 mAh g−1 at 1.0 A g−1, mainly resulting from their physical–chemical stability, fast kinetics, and “zero‐strain” insertion characteristics. Considering that the combination of elements incorporated with carbon may increase the rate of ion transfer and improve the lifetime of cycling stability, they are expected to derive binary metal‐selenide/nitrogen‐doped carbon as anodes. Among them, binary Ni0.67Fe0.33Se2 coming from Ni‐Fe PBAs shows obvious core–shell structure in a dual‐carbon matrix, leading to enhanced electron interactions, electrochemical activity, and “metal‐like” conductivity, which could retain an ultralong‐term stability of 375 mAh g−1 after 10 000 loops even at 10.0 A g−1. The corresponding full‐cell Ni‐Fe PBAs versus Ni0.67Fe0.33Se2 deliver a remarkable Na‐storage capacity of 302.2 mAh g−1 at 1.0 A g−1. The rational strategy is anticipated to offer more possibilities for designing advanced electrode materials used in high‐performance sodium‐ion batteries.
Cubic‐like XFe (X = Co, Ni, Mn) Prussian blue analogs (PBAs) are designed through as‐tuned ionic bonding of XFe. Ni‐Fe PBAs as cathode show “zero‐strain” insertion traits with physical–chemical stability, and their derived binary metal‐selenide as anode displays strong metal‐like conductivity. Their matched sodium full‐cell systems deliver reasonably high and fast specific capacity.
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