Research Advances in Amorphous‐Crystalline Heterostructures Toward Efficient Electrochemical Applications

Small, Journal Year: 2022, Volume and Issue: 19(10)

Published: Dec. 16, 2022

Abstract Interface engineering of heterostructures has proven a promising strategy to effectively modulate their physicochemical properties and further improve the electrochemical performance for various applications. In this context related research newly proposed amorphous‐crystalline have lately surged since they combine superior advantages amorphous‐ crystalline‐phase structures, showing unusual atomic arrangements in heterointerfaces. Nonetheless, there been much less efforts systematic analysis summary examine complicated interfacial interactions elusory active sites. The critical structure‐activity correlation electrocatalytic mechanism remain rather elusive. review, recent advances energy conversion storage fields are amply discussed presented, along with remarks on challenges perspectives. Initially, fundamental characteristics introduced provide scientific viewpoints structural understanding. Subsequently, superiorities current achievements as highly efficient electrocatalysts/electrodes hydrogen evolution reaction, oxygen supercapacitor, lithium‐ion battery, lithium‐sulfur battery applications elaborated. At end future outlooks opportunities also put forward promote development application field clean energy.

Language: Английский

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Design of ZnSe-CoSe heterostructure decorated in hollow N-doped carbon nanocage with generous adsorption and catalysis sites for the reversibly fast kinetics of polysulfide conversion

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 86, P. 135 - 145

Published: July 20, 2023

Language: Английский

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Building better solid‐state batteries with silicon‐based anodes

Interdisciplinary materials, Journal Year: 2023, Volume and Issue: 2(4), P. 635 - 663

Published: July 1, 2023

Abstract Silicon (Si)‐based solid‐state batteries (Si‐SSBs) are attracting tremendous attention because of their high energy density and unprecedented safety, making them become promising candidates for next‐generation storage systems. Nevertheless, the commercialization Si‐SSBs is significantly impeded by enormous challenges including large volume variation, severe interfacial problems, elusive fundamental mechanisms, unsatisfied electrochemical performance. Besides, some unknown processes in Si‐based anode, electrolytes (SSEs), anode/SSE interfaces still needed to be explored, while an in‐depth understanding solid–solid chemistry insufficient Si‐SSBs. This review aims summarize current scientific technological advances insights into tackling promote deployment First, differences between various conventional liquid electrolyte‐dominated lithium‐ion (LIBs) with discussed. Subsequently, mechanical contact model, chemical reaction properties, charge transfer kinetics (mechanical–chemical kinetics) anode three different SSEs (inorganic (oxides) SSEs, organic–inorganic composite inorganic (sulfides) SSEs) systemically reviewed, respectively. Moreover, progress SSE‐based on aspects electrode constitution, three‐dimensional structured electrodes, external stack pressure highlighted, Finally, future research directions prospects development proposed.

Language: Английский

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Engineering amorphous SnO2 nanoparticles integrated into porous N-doped carbon matrix as high-performance anode for lithium-ion batteries

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 639, P. 133 - 144

Published: Feb. 14, 2023

Language: Английский

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VOC Bonding of Heterointerface Boosting Kinetics of Free‐Standing Na₅V₁₂O₃₂ Cathode for Ultralong Lifespan Sodium‐Ion Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(5)

Published: July 8, 2023

Abstract The flexible free‐standing cathodes with high energy density have been challenging toward wearable sodium‐ion batteries (SIBs). Herein, Na 5 V 12 O 32 nanobelts (NVO‐NBs)‐based heterostructure is fabricated boosting the kinetic characteristics to address challenges. In heterostructure, controllable VOC bonds are generated at interface originating from chemical conversion of functional groups reduced graphene oxides (rGOs) VO bonding NVO through interfacial electronic interactions. synergistic between brilliant properties and inherent formation a stress field heterointerface motivated by work function difference can reduce + diffusion barrier, facilitate charge transfer, hence accelerates reaction kinetics electron/ion transport, as well modifying structure realize cherished adsorption . Therefore, optimized NVO‐NBs‐based exhibits exceptional rate capability (213 mAh g −1 0.2 C 100 10 C) ultralong cycling stability (95.4%, 3000 cycles C). This demonstrates that abundant an effective approach exploit potential for rechargeable batteries.

Language: Английский

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High Proportion of Active Nitrogen‐Doped Hard Carbon Based on Mannich Reaction as Anode Material for High‐Performance Sodium‐Ion Batteries

ChemSusChem, Journal Year: 2023, Volume and Issue: 16(7)

Published: Jan. 10, 2023

The potential for energy storage in carbonaceous materials is well known. Heteroatom doping - particularly nitrogen can further enhance their electrochemical performance. type of N configuration determines the reactivity doped carbon. It remains a challenge, however, to achieve high ratio active (N-5) N-doped In this study, proportion nitrogen-doped hard carbon (PTA-Lys-800) synthesized by classical Mannich reaction, using tannic acid (TA) and amino as precursors. For sodium-ion batteries (SIBs), PTA-Lys-800 provides outstanding cycling stability rate performance (338.8 mAh g-1 at 100 mA cycles, capacity retention 86 %; 131.1 4 A after 5000 cycles). excellent attributed stable hierarchical pore structure, abundant defects, N-5 formed during carbonization process. Based on detailed fundamental analysis, pseudocapacitance mechanism found contribute higher sodium process PTA-Lys-800. Na-adsorption explored through ex situ Raman spectroscopy. new method presented designing anode with long cycle life.

Language: Английский

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A General Route for Encapsulating Monodispersed Transition Metal Phosphides into Carbon Multi‐Chambers toward High‐Efficient Lithium‐Ion Storage with Underlying Mechanism Exploration

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(15)

Published: Jan. 18, 2023

Abstract Transition metal phosphides (MP x ) with high theoretical capacities and low cost are regarded as the most promising anodes for lithium‐ion batteries (LIBs), but large volume variations sluggish kinetics largely restrict their development. To solve above challenges, herein a generic effective method is proposed to encapsulate various monodispersed MP into flexible carbon multi‐chambers @NC, MNi, Fe, Co, Cu, etc.) pre‐reserved voids, working LIBs markedly boosting Li + storage performance. Ni 2 P@NC, one representative example of @NC anode, shows reversible capacity (613 mAh g −1 , 200 cycles at 0.2 A ), superior cycle stability (475 800 ). Full cell coupled LiFePO 4 displays (150.1 0.1 stable cycling In situ X‐ray diffraction transmission electron microscope techniques confirm conversion reaction mechanism robust structural integrity, accounting enhanced rate Theoretical calculations reveal synergistic effect between shells, which can significantly promote transfer reduce diffusion energy barriers, paving ways design high‐energy‐density materials systems.

Language: Английский

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Engineering strategies toward electrodes stabilization in capacitive deionization

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 505, P. 215695 - 215695

Published: Feb. 1, 2024

Language: Английский

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Significantly enhanced ion‐migration and sodium‐storage capability derived by strongly coupled dual interfacial engineering in heterogeneous bimetallic sulfides with densified carbon matrix

SusMat, Journal Year: 2024, Volume and Issue: 4(3)

Published: April 28, 2024

Abstract The development of highly efficient sodium‐ion batteries depends critically on the successful exploitation advanced anode hosts that is capable overcoming sluggish reaction kinetics while also withstanding severe structural deformation triggered by large radius Na + ‐insertion. Herein, a hierarchically hybrid material with hetero‐Co 3 S 4 /NiS hollow nanosphere packaged into densified N‐doped carbon matrix (Co /NiS@N‐C) was designed and fabricated utilizing CoNi‐glycerate as self‐sacrifice template, making utmost synergistic effect strong electric field rich active‐sites together outer‐carbon scaffolds remarkable electronic conductivity robust mechanical toughness. As anticipated, as‐fabricated Co /NiS@N‐C affords specific capacity, prolonged cycle lifespan up to 2 400 cycles an only 0.05% fading each at 20.0 A g −1 , excellent rate feature (354.9 mAh 30.0 ), one best performances for most existing /NiS‐based anodes. Ex situ characterizations in tandem theoretical analysis demonstrate reversible insertion‐conversion mechanism initially proceeding de‐/intercalation superior heterogeneous interfacial behavior ‐adsorption ability. Further, full cell capacitor based exhibit impressive electrochemical characteristics cycling performance capability, showcasing its outstanding feasibility toward practical use.

Language: Английский

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In Situ Polymerization of Ionic Liquid with Tunable Phase Separation for Highly Reversible and Ultralong Cycle Life Zn-Ion Battery

Nano Letters, Journal Year: 2022, Volume and Issue: 22(22), P. 9062 - 9070

Published: Nov. 4, 2022

Severe Zn dendrite growth and side reactions greatly limit the application of aqueous zinc-ion batteries. Herein, we design a layer polyionic liquid (PCAVImBr) film with tunable pore size charge density on anode to endow homogenized distribution an electronic field, acerated Zn2+ permeation, inhabitation water entry. Such optimal combination is achieved via polymerization induced phase separation strategy, where enhanced cross-linking arrests in shallow depth vice versa. Furthermore, Zn@PCAVImBr electrode has good plating/stripping reversibility, which retains 99.6% CE efficiency after 3000 cycles. The symmetric cells can achieve cycle life more than 2400 h at different current densities. It worth mentioning that NVO//Zn@PCAVImBr full cell still reach 91.2% capacity retention nearly 4000 cycles high 10 A g–1, provides new insights for future research battery anodes.

Language: Английский

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