A 3D Macroporous Carbon NiCu Single‐Atom Catalyst for High Current Density CO2 Electroreduction DOI Creative Commons

Guilong Lu,

Xin Wang,

Janis Timoshenko

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 10, 2024

Abstract Transition metal and nitrogen co‐decorated carbon materials are promising platforms for CO 2 electroreduction. A hard‐template 2‐step pyrolysis method is proposed the fabrication of highly dispersed Ni Cu atomic active sites on a 3D macroporous matrix. The pyrrolic N‐type Ni−N x serve as dominant toward selective electroreduction to CO. incorporation alters distribution N species simultaneously optimizes electronic state geometric structure moiety, thereby improving its adsorption activation capacity . Moreover, isolated enhance resistance corresponding gas‐diffusion electrodes against electrolyte flooding. optimal catalyst NiCu‐69 achieves nearly exclusive production with Faraday efficiency (FE ) 98% at current density −700 mA cm −2 in ‐gas‐fed flow‐through electrolyzer delivers rate 1363 mol(m s) −1 , which exceeding most reported electrocatalysts. FE remained high 94% after electrolyzing −100 22 h. exhibits favorable performance both acidic neutral conditions, ≈90.2% within range −500

Язык: Английский

Reaction Environment Regulation for Electrocatalytic CO2 Reduction in Acids DOI
Min Zeng,

Wensheng Fang,

Yiren Cen

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(26)

Опубликована: Апрель 19, 2024

The electrocatalytic CO

Язык: Английский

Процитировано

51
Heteroatom modulation of nickel single-atom nanozymes for enhanced interfacial catalytic activity in sensitive electrochemical detection of herbicides DOI
Wei Han,

Peiyuan Wei,

Lingling Xie

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159557 - 159557

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

3
Advances and Challenges of Carbon‐Free Gas‐Diffusion Electrodes (GDEs) for Electrochemical CO2 Reduction DOI
Hesamoddin Rabiee,

Beibei Ma,

Yang Yu

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 26, 2024

Abstract Electrochemical CO 2 reduction reaction (CO RR) coupled with renewable electricity holds promises for efficient mitigation of carbon emission impacts on the environment and turning into valuable chemicals. One important task in RR development is design fabrication electrodes stable operation long term. Gas‐diffusion (GDEs) have been employed to continuously feed electrolyzers. Despite significant advances GDE tailoring properties, present GDEs often suffer from critical issue flooding due electrowetting carbon‐based substrates, which hinders transition industrial application. To address flooding, intrinsically hydrophobic polymeric substrates recently fabricated shown promising performances. Herein, challenges associated carbon‐free are reviewed RR. This review first briefly outlines electrolyzers basics. Through discussion around shortcomings conventional GDEs, most recent efforts resolve summarized. Subsequently, advances, advantages, elaborated. Finally, priorities future studies suggested, aim support advancement scale‐up extend them other electrochemical systems where gas electrolyte contact.

Язык: Английский

Процитировано

5
Reaction Environment Regulation for Electrocatalytic CO2 Reduction in Acids DOI
Min Zeng,

Wensheng Fang,

Yiren Cen

и другие.

Angewandte Chemie, Год журнала: 2024, Номер 136(26)

Опубликована: Апрель 19, 2024

Abstract The electrocatalytic CO 2 reduction reaction (CO RR) is a sustainable route for converting into value‐added fuels and feedstocks, advancing carbon‐neutral economy. electrolyte critically influences utilization, rate product selectivity. While typically conducted in neutral/alkaline aqueous electrolytes, the RR faces challenges due to (bi)carbonate formation its crossover anolyte, reducing efficiency stability. Acidic media offer promise by suppressing these processes, but low Faradaic efficiency, especially multicarbon (C 2+ ) products, poor electrocatalyst stability persist. effective regulation of environment at cathode essential favor over competitive hydrogen evolution (HER) improve long‐term This review examines progress acidic RR, focusing on strategies such as design, electrode modification engineering promote RR. Insights mechanisms via situ/operando techniques theoretical calculations are discussed, along with critical future directions technology, offering guidance developing practical systems community.

Язык: Английский

Процитировано

4
Enhanced pH-universal industrial-level CO2 reduction in N-doped carbon with nickel particles active sites via accelerated proton transport kinetics DOI

Haiqiang Mu,

Pengyue Shan, Ting Zhang

и другие.

Carbon, Год журнала: 2025, Номер unknown, С. 120096 - 120096

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Toward Complete CO2 Electroconversion: Status, Challenges, and Perspectives DOI Creative Commons
Changfan Xu,

Ping Hong,

Yulian Dong

и другие.

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

Процитировано

0
Chainmail Structures of CoNi Alloys Encapsulated in Nitrogen‐Doped Carbon Nanotubes Empowered Long‐Term Stable Detection of Sodium Ions DOI

Yong‐Huan Zhao,

Rui‐Ze Xia,

Xin Cai

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 3, 2025

Abstract Low potential drift is one of the performance criteria for designing all‐solid‐state sodium ion selective electrodes (Na + ‐SC‐ISEs), which directly affects stability and reliability detection results. Currently, most attempts primarily focus on improving hydrophobicity capacitance solid‐contact (SC) layers to enhance Na ‐SC‐ISEs, while neglecting important impact retention rate SC materials long‐term ‐SC‐ISEs. Herein, chainmail‐structured nanomaterials are elaborately designed, where CoNi alloys encapsulated in nitrogen‐doped carbon nanotubes (NCNTs), as construction all‐solid electrodes. The ‐SC‐ISEs based CoNi‐in‐NCNTs (CoNi‐in‐NCNTs/Na ‐ISEs) achieve a minimal 1.14 µV h −1 during stable 4 days commendable 92%. It revealed by density functional theory (DFT) calculations kinetic simulations that continuously penetrate electrons NCNTs surface, realizing rapid ion‐electron transduction at interface. Besides, both serve physical barriers hydrophobic interface prevent water layer formation provide more support sites restrain nanoparticles aggregating. Such barrier protection electron penetration effect significantly enhances .

Язык: Английский

Процитировано

0
Halogen/Nitrogen Codoped Carbon Encapsulated Ni Nanoparticles for Efficient CO2 Electroreduction and High-Performance Zn-CO2 Batteries DOI
Jigang Wang, Yinggang Sun,

Meiyin Li

и другие.

Nano Letters, Год журнала: 2025, Номер unknown

Опубликована: Май 7, 2025

Electroreduction of CO2 (ECR) to CO or syngas is an effective approach alleviating greenhouse gas emissions. Herein, nickel nanoparticles coated with halogen/nitrogen codoped carbon were prepared (X-Ni/NC-a). Cl-Ni/NC-a can obtain three important compositions (CO:H2) under different voltages, such as 0.97, 0.51, and 0.32, which are the ratios for hydroformylation, methanol, ethanol synthesis, respectively. For Br-Ni/NC-a, Faraday efficiency (FEco) exceed 96%, a partial current density (jco) 48 mA cm-2. Additionally, Br-Ni/NC-a used in Zn-CO2 battery (ZCB); power reach 2.6 mW cm-2, charge-discharge stability 110 h. DFT calculations revealed that strong interaction between regulates electronic structure catalyst, affecting adsorption/desorption intermediates. This study provides feasible scheme halogen doping modulate selectivity ECR potential application catalysts ZCB.

Язык: Английский

Процитировано

0
Isolated Ni Atoms for Enhanced Photocatalytic H2O2 Performance with 1.05% Solar-to-Chemical Conversion Efficiency in Pure Water DOI
Cheng Jin, Hao Shen, Jinhe Li

и другие.

Nano Letters, Год журнала: 2024, Номер 24(45), С. 14484 - 14492

Опубликована: Окт. 29, 2024

Photocatalytic hydrogen peroxide (H2O2) production encounters a major impediment in its low solar-to-chemical conversion (SCC) efficiency due to undesired H2O2 product decomposition. Herein, an isolated nickel (Ni) atom modification strategy is developed adjust the thermodynamic process of address challenge. Sacrificial experiments and situ characterization reveal that generation occurs via highly selective indirect two-electron oxygen reduction reaction. The optimized photocatalyst exhibits remarkable rate 338.9 μmol gcat–1 h–1 pure water, representing 48-fold enhancement. Notably, it attains impressive SCC 1.05%, surpassing current state-of-the-art catalysts. Theoretical insights downshifted d-band center facilitates moderate O2 adsorption barrier-free *OOH conversion, favoring release preventing *H2O2 This work showcases efficient photosynthesis manipulation, presenting fresh perspective for advancing high-efficiency systems.

Язык: Английский

Процитировано

2
A 3D Macroporous Carbon NiCu Single‐Atom Catalyst for High Current Density CO2 Electroreduction DOI Creative Commons

Guilong Lu,

Xin Wang,

Janis Timoshenko

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 10, 2024

Abstract Transition metal and nitrogen co‐decorated carbon materials are promising platforms for CO 2 electroreduction. A hard‐template 2‐step pyrolysis method is proposed the fabrication of highly dispersed Ni Cu atomic active sites on a 3D macroporous matrix. The pyrrolic N‐type Ni−N x serve as dominant toward selective electroreduction to CO. incorporation alters distribution N species simultaneously optimizes electronic state geometric structure moiety, thereby improving its adsorption activation capacity . Moreover, isolated enhance resistance corresponding gas‐diffusion electrodes against electrolyte flooding. optimal catalyst NiCu‐69 achieves nearly exclusive production with Faraday efficiency (FE ) 98% at current density −700 mA cm −2 in ‐gas‐fed flow‐through electrolyzer delivers rate 1363 mol(m s) −1 , which exceeding most reported electrocatalysts. FE remained high 94% after electrolyzing −100 22 h. exhibits favorable performance both acidic neutral conditions, ≈90.2% within range −500

Язык: Английский

Процитировано

1