Constant-Potential Modeling of Electrical Double Layers Accounting for Electron Spillover DOI
Zhenxiang Wang, Ming Chen, Jiedu Wu

et al.

Physical Review Letters, Journal Year: 2025, Volume and Issue: 134(4)

Published: Jan. 28, 2025

Constant-potential molecular dynamics (MD) simulations are indispensable for understanding the structure, capacitance, and of electrical double layers (EDLs) at atomistic level. However, classical constant-potential method, relying on so-called ``fluctuating charges'' to keep electrode equipotential, overlooks quantum effects always underestimates EDL capacitance typical metal aqueous electrolyte interfaces. Here, we propose a constant potential method accounting electron spillover outermost nuclei electrode. For EDLs Au(111) electrodes, our MD simulation reveals bell-shaped curves in magnitude shape both quantitatively consistent with experiments. It unveils electrode-polarization-dependent local electric fields, agreeing experimental observations redshift vibration interfacial water under negative polarization predicting blueshift positive polarization, further identifies geometry dependence two timescales during charging.

Language: Английский

Understanding the Electric Double-Layer Structure, Capacitance, and Charging Dynamics DOI
Jianzhong Wu

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(12), P. 10821 - 10859

Published: May 20, 2022

Significant progress has been made in recent years theoretical modeling of the electric double layer (EDL), a key concept electrochemistry important for energy storage, electrocatalysis, and multitudes other technological applications. However, major challenges remain understanding microscopic details electrochemical interface charging mechanisms under realistic conditions. This review delves into methods to describe equilibrium dynamic responses EDL structure capacitance systems commonly deployed capacitive storage. Special emphasis is given advances that intend capture nonclassical behavior such as oscillatory ion distributions, polarization nonmetallic electrodes, charge transfer, various forms phase transitions micropores electrodes interfacing with an organic electrolyte or ionic liquid. comprehensive analysis highlights insights predictable relationships between materials characteristics performance offers perspective on opportunities further development toward rational design optimization systems.

Language: Английский

Citations

445

Electrocapacitive Deionization: Mechanisms, Electrodes, and Cell Designs DOI Creative Commons

Kaige Sun,

Mike Tebyetekerwa, Chao Wang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(18)

Published: Feb. 26, 2023

Abstract Capacitive deionization (CDI) is an emerging water desalination technology for removing different ionic species from water, which based on electric charge compensation by these charged species. CDI becoming popular because it more energy‐efficient and cost‐effective than other technologies, such as reverse osmosis distillation, specifically in dealing with brackish having low or moderate salt concentrations. Over the past decade, research field has witnessed significant advances used electrode materials, cell architectures, associated mechanisms applications. This review article first discusses ion storage/removal carbon Faradaic materials aided advanced situ analysis techniques computations. It then summarizes progress toward terms of structure, surface chemistry, composition. More still, architectures highlighting their design concepts. Finally, current challenges future directions are summarized to provide guidelines research.

Language: Английский

Citations

125

Role of biochar toward carbon neutrality DOI Creative Commons
Liuwei Wang,

Jiayu Deng,

Xiaodong Yang

et al.

Carbon Research, Journal Year: 2023, Volume and Issue: 2(1)

Published: Jan. 16, 2023

Abstract Carbon neutrality by the mid-twenty-first century is a grand challenge requiring technological innovations. Biochar, traditional soil amendment which has been used for fertility improvement and contaminant remediation, revealed new vitality in this context. In review we highlight huge potential of biochar application different fields to mitigate as high 2.56 × 10 9 t CO 2 e total greenhouse gas (GHG) emissions per year, accounting 5.0% global GHG emissions. Soil applications either controlled-release fertilizer or an immobilization agent offer improved health while simultaneously suppressing CH 4 N O. Non-soil also contribute carbon unique ways. Firstly, ruminant feed decreases via physical sorption enhanced activities methanotrophs. Secondly, can be green catalyst biorefinery. Besides, additive Portland cement low impact development (LID) infrastructure lowers footprint builds resilience climate change. Furthermore, novel batteries supercapacitors energy storage purposes. Finally, adsorption capacity makes it possible being sorbent capture, utilization, (CCUS). We advocate that future research should further explore effectiveness systems change mitigation large scale applications, assess economic social viability local combat Graphical

Language: Английский

Citations

121

“Fast-Charging” Anode Materials for Lithium-Ion Batteries from Perspective of Ion Diffusion in Crystal Structure DOI
Rui Wang, Lu Wang, Rui Liu

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(4), P. 2611 - 2648

Published: Jan. 15, 2024

"Fast-charging" lithium-ion batteries have gained a multitude of attention in recent years since they could be applied to energy storage areas like electric vehicles, grids, and subsea operations. Unfortunately, the excellent density fail sustain optimally while are exposed fast-charging conditions. In actuality, crystal structure electrode materials represents critical factor for influencing performance. Accordingly, employing anode with low diffusion barrier improve "fast-charging" performance battery. this Review, first, principle battery ion path briefly outlined. Next, application prospects various structures evaluated search stable, safe, long lifespan, solving remaining challenges associated high power safety. Finally, summarizing research advances typical materials, including preparation methods advanced morphologies latest techniques ameliorating Furthermore, an outlook is given on ongoing breakthroughs batteries. Intercalated (niobium-based, carbon-based, titanium-based, vanadium-based) favorable cycling stability predominantly limited by undesired electronic conductivity theoretical specific capacity. addressing electrical these constitutes effective trend realizing fast-charging. The conversion-type transition metal oxide phosphorus-based capacity typically undergoes significant volume variation during charging discharging. Consequently, alleviating expansion significantly fulfill

Language: Английский

Citations

115

Metal–Organic Framework Supercapacitors: Challenges and Opportunities DOI Creative Commons
Seung‐Jae Shin, Jamie W. Gittins, Chloe J. Balhatchet

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(43)

Published: Sept. 17, 2023

Abstract Supercapacitors offer superior energy storage capabilities than traditional capacitors, making them useful for applications such as electric vehicles and rapid large‐scale storage. The performance of these devices relies on electrical double‐layer capacitance and/or pseudocapacitance from reversible redox reactions. Metal–organic frameworks (MOFs) have recently emerged a new class electrode materials with promising supercapacitor performances capacitances that exceed those materials. However, the comparison porous carbon state‐of‐the‐art MOF highlights number challenges supercapacitors, including low potential windows, limited cycle lifetimes, poor rate performances. It is proposed well‐defined tuneable chemical structures MOFs present avenues improving performance. Recent experimental theoretical work charging mechanisms in MOF‐based supercapacitors also discussed, it found there need more studies elucidate charge degradation mechanisms. Ultimately, deeper understanding will lead to design principles realizing improved devices.

Language: Английский

Citations

84

Theory and Simulations of Ionic Liquids in Nanoconfinement DOI Creative Commons
Svyatoslav Kondrat, Guang Feng, Fernando Bresme

et al.

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(10), P. 6668 - 6715

Published: May 10, 2023

Room-temperature ionic liquids (RTILs) have exciting properties such as nonvolatility, large electrochemical windows, and remarkable variety, drawing much interest in energy storage, gating, electrocatalysis, tunable lubrication, other applications. Confined RTILs appear various situations, for instance, pores of nanostructured electrodes supercapacitors batteries, increase the contact area with enhance total capacitance stored energy, between crossed cylinders surface force balance experiments, a tip sample atomic microscopy, sliding surfaces tribology where act lubricants. The functioning confinement, especially nanoconfinement, result fascinating structural dynamic phenomena, including layering, overscreening crowding, nanoscale capillary freezing, quantized electrotunable friction, superionic state. This review offers comprehensive analysis fundamental physical phenomena controlling systems current state-of-the-art theoretical simulation approaches developed their description. We discuss these sequentially by increasing atomistic complexity, paying particular attention to new emerging confinement. covers models, most which are based on mapping problems pertinent statistical mechanics models exact analytical solutions, allowing systematic insights develop more easily. also describe classical density functional theory, reliable computationally inexpensive tool account some microscopic details correlations that simplified often fail consider. Molecular simulations play vital role studying confined liquids, enabling deep otherwise unavailable researchers. basics challenges applicability specific problems, focusing RTIL structure cylindrical slit confinement how it relates friction capacitive ions.

Language: Английский

Citations

81

Progress of Photocapacitors DOI Creative Commons
Natalie Flores‐Díaz, Francesca De Rossi, Aparajita Das

et al.

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(15), P. 9327 - 9355

Published: June 9, 2023

In response to the current trend of miniaturization electronic devices and sensors, complementary coupling high-efficiency energy conversion low-loss storage technologies has given rise development photocapacitors (PCs), which combine in a single device. Photovoltaic systems integrated with supercapacitors offer unique light capabilities, resulting improved overall efficiency over past decade. Consequently, researchers have explored wide range device combinations, materials, characterization techniques. This review provides comprehensive overview photocapacitors, including their configurations, operating mechanisms, manufacturing techniques, focus on emerging applications small wireless devices, Internet Things (IoT), Everything (IoE). Furthermore, we highlight importance cutting-edge materials such as metal–organic frameworks (MOFs) organic for supercapacitors, well novel photovoltaics, advancing PCs carbon-free, sustainable society. We also evaluate potential development, prospects, application scenarios this area research.

Language: Английский

Citations

47

Review on Conductive Polymer Composites for Supercapacitor Applications DOI Open Access
Melkie Getnet Tadesse, Abdella Simegnaw Ahmmed, Jörn Felix Lübben

et al.

Journal of Composites Science, Journal Year: 2024, Volume and Issue: 8(2), P. 53 - 53

Published: Jan. 30, 2024

The rising demand for energy storage systems with high power density, rapid charge/discharge capabilities, and long cycle life has pushed extensive research into advanced materials supercapacitor applications. There are several under investigation, among these materials, conductive polymer composites have emerged as promising candidates due to their unique combination of electrical conductivity, flexibility, facile synthesis. This review provides a comprehensive analysis recent advancements in the development application begins an overview fundamental principles governing conductivity mechanism, applications polymers specific requirements employed devices. Subsequently, it delves properties challenges associated implementation supercapacitors, highlighting limitations pristine strategies overcome drawbacks through composite formation. In this review, on supercapacitors explored, advantages disadvantages discussed. Finally, electromechanical each elaborated.

Language: Английский

Citations

45

Supercapacitors: Overcoming current limitations and charting the course for next-generation energy storage DOI
Humaira Rashid Khan, Abdul Latif Ahmad

Journal of Industrial and Engineering Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: July 1, 2024

Language: Английский

Citations

44

Structural designs of advanced wood-based thick electrodes for high-performance eco-supercapacitors DOI
Yuan Yu, Menggang Li, Jiazuo Zhou

et al.

Nano Today, Journal Year: 2024, Volume and Issue: 55, P. 102154 - 102154

Published: Jan. 12, 2024

Language: Английский

Citations

29