Lignin derived carbon materials: current status and future trends

Carbon Research, Год журнала: 2022, Номер 1(1)

Опубликована: Июль 29, 2022

Abstract Developing novel techniques to convert lignin into sustainable chemicals and functional materials is a critical route toward the high-value utilization of lignocellulosic biomass. Lignin-derived carbon hold great promise for applications in energy chemical engineering, catalysis environmental remediation. In this review, state-of-art sciences technologies controllable synthesis lignin-derived are summarized, pore structure crystalline morphology controlling methodologies thoroughly outlined critically discussed. Green engineering with cost-effectiveness precise carbonization tuning microstructure future research trends materials. Future directions that could be employed advance commercial then proposed.

Язык: Английский

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Covalent Organic Framework with Highly Accessible Carbonyls and π‐Cation Effect for Advanced Potassium‐Ion Batteries

Angewandte Chemie International Edition, Год журнала: 2022, Номер 61(10)

Опубликована: Янв. 15, 2022

Covalent organic frameworks (COF) possess a robust and porous crystalline structure, making them an appealing candidate for energy storage. Herein, we report exfoliated polyimide COF composite (P-COF@SWCNT) prepared by in situ condensation of anhydride amine on the single-walled carbon nanotubes as advanced anode potassium-ion batteries (PIBs). Numerous active sites exposed various open pathways promote highly efficient ion diffusion P-COF@SWCNT while preventing irreversible dissolution electrolyte. During charging/discharging process, K+ is engaged carbonyls imide group naphthalene rings through enolization π-K+ effect, which demonstrated DFT calculation XPS, ex-situ FTIR, Raman. As result, enables incredibly high reversible specific capacity 438 mA h g-1 at 0.05 A extended stability. The structural advantage more insights into design versatility electrode.

Язык: Английский

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Carbon Dots as New Building Blocks for Electrochemical Energy Storage and Electrocatalysis

Advanced Energy Materials, Год журнала: 2021, Номер 12(6)

Опубликована: Дек. 30, 2021

Abstract In recent years, research into the synthesis and applications of 0D carbon dots (CDs) has blossomed a vibrant exciting new field. CDs possess diverse fascinating chemical, structural, optical characteristics, which can be exploited in both fundamental applied areas. particular, their superior electrochemical activity ease‐of‐modification make very promising electrode materials electrocatalysis electrical energy storage. This review seeks to provide an overview latest ground‐breaking relating utilization processes storage, thus providing timely snapshot advancements this area. To begin, advances methods, structural modification/functionalization strategies are explored, with view toward structure‐property relationships. Next, performance various energy‐related summarized, including H 2 evolution, O evolution/reduction, CO reduction, batteries supercapacitors. Finally, future challenges opportunities for CDs‐based devices surveyed.

Язык: Английский

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Lignin for energy applications – state of the art, life cycle, technoeconomic analysis and future trends

Green Chemistry, Год журнала: 2022, Номер 24(21), С. 8193 - 8226

Опубликована: Янв. 1, 2022

Lignin in advanced energy applications: source, extraction methodolgy, structure/property relationships.

Язык: Английский

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Advances and perspectives of ZIFs-based materials for electrochemical energy storage: Design of synthesis and crystal structure, evolution of mechanisms and electrochemical performance

Energy storage materials, Год журнала: 2021, Номер 43, С. 531 - 578

Опубликована: Сен. 23, 2021

Язык: Английский

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Accordion‐Like Carbon with High Nitrogen Doping for Fast and Stable K Ion Storage

Advanced Energy Materials, Год журнала: 2021, Номер 11(41)

Опубликована: Сен. 24, 2021

Abstract Potassium ion battery (PIB) is a potential candidate for future large‐scale energy storage. A key challenge that the (de)potassiation stability of graphitic carbon anodes hampered by limited (002) interlayer spacing. Amorphous with hierarchical structure can buffer volume change during repeated and enable stable cycling. Herein, direct pyrolysis approach demonstrated to synthesize highly nitrogen‐doped (26.7 at.%) accordion‐like anode composed thin nanosheets turbostratic crystalline structure. The endowed self‐assembly process carbonization. accordion enables high reversible capacity 346 mAh g −1 superior cycling stability. This work constitutes general synthesis methodology be used prepare advanced PIBs.

Язык: Английский

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Sulfur-Doped Carbon for Potassium-Ion Battery Anode: Insight into the Doping and Potassium Storage Mechanism of Sulfur

ACS Nano, Год журнала: 2022, Номер 16(12), С. 21443 - 21451

Опубликована: Дек. 9, 2022

The sulfur doping strategy has been attracting extensive interest in potassium-ion battery carbon anodes for the dual potential of improving capacity and kinetics anodes. Understanding potassium storage mechanism is crucial to guide structural design optimization high-performance sulfur-doped Herein, presenting a laboratory-synthesized hard (SHC) with content 6.4 at. % as an example, we clarify reveal role storage. high SHC stems from selective substitution residual trace molecular fragments after sulfurization. As result, thanks multifaceted roles doped storage, about twice much capacity, rate capability, cycling stability achieved against S-free at same test conditions. Furthermore, hybrid capacitors assembled based on anode demonstrate energy/power density (139 Wh kg-1/7.3 kW kg-1), along extraordinary stability.

Язык: Английский

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Crystal Facet and Architecture Engineering of Metal Oxide Nanonetwork Anodes for High-Performance Potassium Ion Batteries and Hybrid Capacitors

ACS Nano, Год журнала: 2022, Номер 16(1), С. 1486 - 1501

Опубликована: Янв. 3, 2022

Metal oxides are considered as prospective dual-functional anode candidates for potassium ion batteries (PIBs) and hybrid capacitors (PIHCs) because of their abundance high theoretic gravimetric capacity; however, due to the inherent insulating property wide band gaps deficient ion-transport kinetics, metal oxide anodes exhibit poor K+ electrochemical performance. In this work, we report crystal facet architecture engineering achieve significantly enhanced storage A bismuth antimonate (BiSbO4) nanonetwork with an perpendicularly crossed single nanorods majorly exposed (001) planes synthesized via CTAB-mediated growth. is found be preferential surface diffusion path superior adsorption transport, in addition, interconnected gives rise a robust matrix enhance electrical conductivity well buffering dramatic volume change during insertion/extraction K+. Thanks synergistic effect structural BiSbO4 electrodes, stable dual conversion-alloying mechanism based on reversible six-electron transfer per formula unit ternary realized, proceeding by coexistence peroxide conversion reactions (KO2↔K2O) BixSby alloying (BiSb ↔ KBiSb K3BiSb). As result, show outstanding terms capacity, cycling life, rate capability. Finally, implementation state-of-the-art full cell configuration both PIBs PIHCs shows satisfactory performance Ragone plot that sheds light practical applications range K+-based energy devices. We believe study will propose promising avenue design advanced hierarchical nanostructures or binary conversion-type materials PIBs, PIHCs, even extensive storage.

Язык: Английский

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Defect Engineering of Disordered Carbon Anodes with Ultra-High Heteroatom Doping Through a Supermolecule-Mediated Strategy for Potassium-Ion Hybrid Capacitors

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Янв. 27, 2023

Amorphous carbons are promising anodes for high-rate potassium-ion batteries. Most low-temperature annealed amorphous display unsatisfactory capacities. Heteroatom-induced defect engineering of could enhance their reversible Nevertheless, most lignocellulose biomasses lack heteroatoms, making it a challenge to design highly heteroatom-doped (> 10 at%). Herein, we report new preparation strategy carbon anodes. Nitrogen/sulfur co-doped lignin-derived porous (NSLPC) with ultra-high nitrogen doping levels (21.6 at% N and 0.8 S) from renewable lignin biomacromolecule precursors were prepared through supramolecule-mediated pyrolysis strategy. This supermolecule/lignin composite decomposes forming covalently bonded graphitic carbon/amorphous intermediate product, which induces the formation high heteroatom in obtained NSLPC. unique chemistry NSLPC enable abundant defective active sites adsorption K+ improved kinetics. The anode delivered capacity 419 mAh g‒1 superior cycling stability (capacity retention 96.6% at 1 A 1000 cycles). Potassium-ion hybrid capacitors assembled by exhibited excellent (91% 2000 cycles) energy density 71 Wh kg-1 power 92 W kg-1.

Язык: Английский

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Preferential Pyrolysis Construction of Carbon Anodes with 8400 h Lifespan for High‐Energy‐Density K‐ion Batteries

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(17)

Опубликована: Март 1, 2023

Carbonaceous materials are promising anodes for practical potassium-ion batteries, but fail to meet the requirements durability and high capacities at low potentials. Herein, we constructed a durable carbon anode high-energy-density K-ion full cells by preferential pyrolysis strategy. Utilizing S N volatilization from π-π stacked supermolecule, process introduces low-potential active sites of sp2 hybridized vacancies, endowing "vacancy-adsorption/intercalation" mechanism. The as-prepared exhibits capacity 384.2 mAh g-1 (90 % locates below 1 V vs. K/K+ ), which contributes energy density 163 Wh kg-1 battery. Moreover, abundant vacancies alleviate volume variation, boosting cycling stability over 14 000 cycles (8400 h). Our work provides new synthesis approach with densities.

Язык: Английский

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