Upgrading Cycling Stability and Capability of Hybrid Na‐CO₂ Batteries via Tailoring Reaction Environment for Efficient Conversion CO₂ to HCOOH

Advanced Energy Materials, Год журнала: 2024, Номер 14(16)

Опубликована: Фев. 29, 2024

Abstract Rechargeable Na‐CO 2 batteries are considered to be an effective way address the energy crisis and greenhouse effect due their dual functions of CO fixation/utilization storage. However, insolubility irreversibility solid discharge products lead poor capacity cycle performance. Herein, a novel strategy is proposed enhance electrochemical performance hybrid batteries, using water‐in‐salt electrolyte (WiSE) establish optimal reaction environment, regulate reduction pathway, ultimately convert product battery from Na 3 formic acid (HCOOH). This effectively resolves issue reversibility, allowing exhibit excellent (over 1200 cycles at 30 °C), especially under low‐temperature conditions (2534 −20 °C). Furthermore, density functional theory (DFT) calculations experiments indicate that by adjusting relative concentration H/O atoms electrolyte/catalyst interface, pathway in can regulated, thus enhancing capture capability consequently achieving ultra‐high specific 148.1 mAh cm −2 . work promotes practical application shall provide guidance for converting into with high‐value‐added chemicals.

Язык: Английский

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Enhancing the reaction kinetics and structural stability of high-voltage LiCoO₂via polyanionic species anchoring

Energy & Environmental Science, Год журнала: 2024, Номер 17(12), С. 4147 - 4156

Опубликована: Янв. 1, 2024

Anchored polyanionic species acting as micro funnels boost the Li + kinetics and enhance structural stability of high-voltage LiCoO 2 .

Язык: Английский

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Nitrogen/Phosphorus/Fluorine Heteroatoms Codoped Carbon Nanotube Networks as Free-Standing Cathode for Rechargeable Li-CO₂ Batteries

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

Rechargeable lithium–carbon dioxide (Li-CO2) batteries have garnered global interest for their CO2 capture potential and exceptionally high energy density. However, the sluggish kinetics elevated charging induced by wide band gap insulator lithium carbonate (Li2CO3) underscore critical need to investigate cathode catalysts that can facilitate decomposition of Li2CO3 lower potential. Heteroatom doping plays an important role in regulating catalytic activity carbon-based metal-free catalysts. Herein, nitrogen/phosphorus/fluorine heteroatoms codoped carbon nanotubes (NPF-CNTs) are synthesized one step ammonium hexafluorophosphate (NH4PF6) assisted route. The three-dimensional interconnected structures free-standing NPF-CNT membrane fabricated a simple vacuum filtration, which provides abundant active sites facilitates charge transfer during electrochemical reaction. with cathodes achieve discharge area capacity (2.86 mAh cm–2) low overpotential excellent cycle performance (900 cycles at 100 μA cm–2, approaching 1800 h). good cycling stability 200 cm–2 is more prominent Li-CO2 batteries. These results demonstrate NPF-CNTs crucial enhancing reduction evolution reactions, thus significantly improving performance.

Язык: Английский

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Recent development and applications of differential electrochemical mass spectrometry in emerging energy conversion and storage solutions

Chemical Society Reviews, Год журнала: 2024, Номер 53(13), С. 6917 - 6959

Опубликована: Янв. 1, 2024

Electrochemical energy conversion and storage are playing an increasingly important role in shaping the sustainable future. Differential electrochemical mass spectrometry (DEMS) offers

Язык: Английский

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Catalytic role of in-situ formed C-N species for enhanced Li2CO3 decomposition

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Апрель 22, 2024

Abstract Sluggish kinetics of the CO 2 reduction/evolution reactions lead to accumulation Li 3 residuals and thus possible catalyst deactivation, which hinders long-term cycling stability Li-CO batteries. Apart from design, constructing a fluorinated solid-electrolyte interphase is conventional strategy minimize parasitic prolong cycle life. However, catalytic effects components have been overlooked remain unclear. Herein, we systematically regulate compositions via tuning electrolyte solvation structures, anion coordination, binding free energy between ion anion. The cells exhibit distinct improvement in performance with increasing content C-N species layers. enhancement originates effect towards accelerating formation/decomposition kinetics. Theoretical analysis reveals that provide strong adsorption sites promote charge transfer interface *CO 2− during discharge, charge, thereby building bidirectional fast-reacting bridge for reactions. This finding enables us design rich dual-salt electrolytes, improving life batteries twice using traditional electrolytes. Our work provides an insight into interfacial by properties

Язык: Английский

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Atomically dispersed Cu and Cr on N-doped hollow carbon nanocages for synergistic promotion of high-performance Li–CO2 batteries

Chemical Engineering Journal, Год журнала: 2024, Номер 493, С. 152723 - 152723

Опубликована: Май 31, 2024

Язык: Английский

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Steering the Orbital Hybridization to Boost the Redox Kinetics for Efficient Li–CO₂ Batteries

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(30), С. 20814 - 20822

Опубликована: Июль 20, 2024

The sluggish CO

Язык: Английский

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Routes to Bidirectional Cathodes for Reversible Aprotic Alkali Metal–CO₂ Batteries

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 23, 2024

Aprotic alkali metal-CO

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Reversible and irreversible reaction mechanisms of Li–CO₂ batteries

Chemical Science, Год журнала: 2024, Номер 15(13), С. 4804 - 4810

Опубликована: Янв. 1, 2024

We disclose the rechargeable/reversible reaction mechanisms of Li–CO 2 batteries by using state-of-the-art first-principles calculations.

Язык: Английский

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Toward Complete CO₂ Electroconversion: Status, Challenges, and Perspectives

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 12, 2025

Abstract Electrocatalytic conversion of carbon dioxide (CO 2 ) into valuable carbon‐based fuels and chemicals represents a promising approach to closing the cycle setting circular economy. Nevertheless, for current electrocatalytic CO reduction reaction (ECO RR) systems, realizing 100% with simultaneously high overall rate (i.e., single‐pass conversion) Faradaic efficiency (FE) remains significant challenge. Enhancing often results in decrease FE, conversely, improving FE may limit rate. Metal–CO (M–CO batteries functions face similar challenges, particularly reversible M–CO batteries, which do not accomplish net because nearly all RR products are reoxidized during subsequent charging process. Such system neutrality poses substantial challenges. This perspective provides an in‐depth analysis state‐of‐the‐art ECO systems alongside main strategies employed address their respective The critical importance achieving both is underscored practical applications effectively close cycle. Furthermore, strategic roadmap that outlines future research directions presented, thereby facilitating advancement comprehensive electroconversion technologies.

Язык: Английский

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