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

---

Accelerated Diffusion Kinetics in ZnTe/CoTe₂ Heterojunctions for High Rate Potassium Storage

Advanced Energy Materials, Год журнала: 2022, Номер 12(41)

Опубликована: Сен. 1, 2022

Abstract Potassium‐ion batteries hold practical potential for large‐scale energy storage owing to their appealing cell voltage and cost‐effective features. The development of anode materials with high rate capability satisfactory cycle lifespan, however, is one the key elements exploiting this electrochemical system at levels. Here, a template‐assisted strategy reported acquiring bimetallic telluride heterostructure which supported on N‐doped carbon shell (ZnTe/CoTe 2 @NC) that promotes diffusion K + ions rapid charge transfer. It shown in heterojunctions, electron‐rich Te sites built‐in electric fields contributed by electron transfer from ZnTe CoTe concomitantly provide abundant cation adsorption facilitate interfacial transport during potassiation/depotassiation. relatively fine ZnTe/CoTe nanoparticles imparted heterojunction result structural stability, together highly reversible capacity up 5000 cycles 5 A g −1 . Moreover, using judiciously combined experiment theoretical computation, it demonstrated barrier heterojunctions significantly lower than individual counterparts. This quantitative design fast durable heterostructures can be immediate benefit rational low‐cost conversion.

Язык: Английский

---

Unraveling the Effect of Intrinsic Carbon Defects on Potassium Storage Performance

Advanced Functional Materials, Год журнала: 2022, Номер 32(48)

Опубликована: Сен. 28, 2022

Abstract Defects engineering is an attractive strategy to improve the potassium storage performance of carbon anodes. The current studies mainly focus on introduction external defects via heteroatom doping, however, exploration effect intrinsic caused by loss atoms or distortion in crystal lattice still lacking date. Hence, a series materials with different defect levels are developed soft‐template assisted method. It found that content synergistically determined application template and pyrolysis temperature, higher more likely expose enormous edge active sites. This greatly promotes K‐adsorption during surface‐induced capacitive process, therefore strong positive correlation between capacity/capacity retention confirmed. As result, electrode maximum realizes good capacity rate capability long cycle lifespan (225.9 mAh g −1 at 2 A over 2000 cycles). study offers insight into role performance.

Язык: Английский

---

Research progress on carbon materials as negative electrodes in sodium‐ and potassium‐ion batteries

Carbon Energy, Год журнала: 2022, Номер 4(6), С. 1182 - 1213

Опубликована: Июль 8, 2022

Abstract Carbon materials, including graphite, hard carbon, soft graphene, and carbon nanotubes, are widely used as high‐performance negative electrodes for sodium‐ion potassium‐ion batteries (SIBs PIBs). Compared with other materials abundant, low‐cost, environmentally friendly, have excellent electrochemical properties, which make them especially suitable electrode of SIBs PIBs. traditional modifications the morphology size nanomaterials represent effective strategies to improve quality materials. Different nanostructures different contributions toward improving performance so synthesis is promising controlling This paper reviews progress made challenges in use PIBs recent years. The differences Na + K storage mechanisms among types emphasized.

Язык: Английский

---

Supermolecule-mediated defect engineering of porous carbons for zinc-ion hybrid capacitors

Nano Energy, Год журнала: 2022, Номер 103, С. 107827 - 107827

Опубликована: Сен. 23, 2022

Язык: Английский

---

Interface Engineering of Biomass‐Derived Carbon used as Ultrahigh‐Energy‐Density and Practical Mass‐Loading Supercapacitor Electrodes

Advanced Functional Materials, Год журнала: 2022, Номер 33(8)

Опубликована: Дек. 16, 2022

Abstract The development of flexible electrodes with high mass loading and efficient electron/ion transport is great significance but still remains the challenge innovating suitable electrode structures for energy density application. Herein, first time, lignosulfonate‐derived N/S‐co‐doped graphene‐like carbon in situ formed within an interface engineered cellulose textile through a sacrificial template method. Both experimental theoretical calculations disclose that pomegranate‐like structure continuous conductive pathways porous characteristics allows sufficient ion/electron throughout entire structures. As result, obtained delivers remarkable integrated capacitance 6534 mF cm −2 (335.1 F g −1 ) superior stability at industrially applicable 19.5 mg . A pseudocapacitive cathode ultrahigh 7000 can also be based on same engineering. as‐assembled asymmetric supercapacitor achieves areal 3625 , maximum 1.06 mWh outperforms most other reported high‐loading supercapacitors. This synthesis method structural engineering strategy provide materials design concepts wide range applications fields storage beyond

Язык: Английский

---

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

---

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

---

Advanced anode materials for potassium batteries: Sorting out opportunities and challenges by potassium storage mechanisms

Matter, Год журнала: 2023, Номер 6(10), С. 3220 - 3273

Опубликована: Авг. 9, 2023

Язык: Английский

---

Biomass-derived carbon anodes for sodium-ion batteries

New Carbon Materials, Год журнала: 2023, Номер 38(1), С. 40 - 66

Опубликована: Фев. 1, 2023

Язык: Английский

---