Carbon Energy最新文献

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A facile ice-templating-induced puzzle coupled with carbonization strategy for kilogram-level production of porous carbon nanosheets as high-capacity anode for lithium-ion batteries 一种简便的冰雏形诱导拼图和碳化策略,用于生产公斤级多孔碳纳米片,作为锂离子电池的高容量负极
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-08-02 DOI: 10.1002/cey2.633
Baolin Xing, Feng Shi, Zhanzhan Jin, Huihui Zeng, Xiaoxiao Qu, Guangxu Huang, Chuanxiang Zhang, Yunkai Xu, Zhengfei Chen, Jun Lu
{"title":"A facile ice-templating-induced puzzle coupled with carbonization strategy for kilogram-level production of porous carbon nanosheets as high-capacity anode for lithium-ion batteries","authors":"Baolin Xing,&nbsp;Feng Shi,&nbsp;Zhanzhan Jin,&nbsp;Huihui Zeng,&nbsp;Xiaoxiao Qu,&nbsp;Guangxu Huang,&nbsp;Chuanxiang Zhang,&nbsp;Yunkai Xu,&nbsp;Zhengfei Chen,&nbsp;Jun Lu","doi":"10.1002/cey2.633","DOIUrl":"10.1002/cey2.633","url":null,"abstract":"<p>Two-dimensional porous carbon nanosheets (PCNSs) are considered promising anodes for lithium-ion batteries due to their synergetic features arising from both graphene and porous structures. Herein, using naturally abundant and biocompatible sodium humate (SH) as the precursor, PCNSs are prepared from the laboratory scale up to the kilogram scale by a method of a facile ice-templating-induced puzzle coupled with a carbonization strategy. Such obtained SH-derived PCNSs (SH-PCNSs) possess a hierarchical porous structure dominated by mesopores having a specific surface area (~127.19 <sup>2</sup> g<sup>−1</sup>), pore volume (~0.134 cm<sup>3</sup> g<sup>−1</sup>), sheet-like morphology (~2.18 nm in thickness), and nitrogen/oxygen-containing functional groups. Owing to these merits, the SH-PCNSs present impressive Li-ion storage characteristics, including high reversible capacity (1011 mAh g<sup>−1</sup> at 0.1 A g<sup>−1</sup>), excellent rate capability (465 mAh g<sup>−1</sup> at 5 A g<sup>−1</sup>), and superior cycle stability (76.8% capacitance retention after 1000 cycles at 5 A g<sup>−1</sup>). It is noted that the SH-PCNSs prepared from the kilogram-scale production procedure possess comparable electrochemical properties. Furthermore, coupling with a LiNi<sub>1/3</sub>Co<sub>1/3</sub>Mn<sub>1/3</sub>O<sub>2</sub> cathode, the full cells deliver a high capacity of 167 mAh g<sup>−1</sup> at 0.2 A g<sup>−1</sup> and exhibit an outstanding energy density of 128.8 Wh kg<sup>−1</sup>, highlighting the practicability of this porous carbon nanosheets and the potential commercial opportunity of the scalable processing approach.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 12","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.633","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic modulation of valence state and oxygen vacancy induced by surface reconstruction of the CeO2/CuO catalyst toward enhanced electrochemical CO2 reduction CeO2/CuO 催化剂表面重构诱导的价态和氧空位协同调控可增强二氧化碳的电化学还原能力
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-08-02 DOI: 10.1002/cey2.588
Fangfang Chang, Zhenmao Zhang, Yan Zhang, Yongpeng Liu, Lin Yang, Xiaolei Wang, Zhengyu Bai, Qing Zhang
{"title":"Synergistic modulation of valence state and oxygen vacancy induced by surface reconstruction of the CeO2/CuO catalyst toward enhanced electrochemical CO2 reduction","authors":"Fangfang Chang,&nbsp;Zhenmao Zhang,&nbsp;Yan Zhang,&nbsp;Yongpeng Liu,&nbsp;Lin Yang,&nbsp;Xiaolei Wang,&nbsp;Zhengyu Bai,&nbsp;Qing Zhang","doi":"10.1002/cey2.588","DOIUrl":"10.1002/cey2.588","url":null,"abstract":"<p>Electrochemical CO<sub>2</sub> reduction reaction (CO<sub>2</sub>RR) offers a promising strategy for CO<sub>2</sub> conversion into value-added C<sub>2+</sub> products and facilitates the storage of renewable resources under comparatively mild conditions, but still remains a challenge. Herein, we propose the strategy of surface reconstruction and interface integration engineering to construct tuneable Cu<sup>0</sup>–Cu<sup>+</sup>–Cu<sup>2+</sup> sites and oxygen vacancy oxide derived from CeO<sub>2</sub>/CuO nanosheets (OD-CeO<sub>2</sub>/CuO NSs) heterojunction catalysts and promote the activity and selectivity of CO<sub>2</sub>RR. The optimized OD-CeO<sub>2</sub>/CuO electrocatalyst shows the maximum Faradic efficiencies for C<sub>2+</sub> products in the H-type cell, which reaches 69.8% at −1.25 V versus a reversible hydrogen electrode (RHE). Advanced characterization analysis and density functional theory (DFT) calculations further confirm the fact that the existence of oxygen vacancies and Cu<sup>0</sup>–Cu<sup>+</sup>–Cu<sup>2+</sup> sites modified with CeO<sub>2</sub> is conducive to CO<sub>2</sub> adsorption and activation, enhances the hydrogenation of *CO to *CHO, and further promotes the dimerization of *CHO, thus promoting the selectivity of C<sub>2+</sub> generation. This facile interface integration and surface reconstruction strategy provides an ideal strategy to guide the design of CO<sub>2</sub>RR electrocatalysts.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 12","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.588","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141887250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cover Image, Volume 6, Number 7, July 2024 封面图片,第 6 卷第 7 号,2024 年 7 月
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-07-29 DOI: 10.1002/cey2.644
Jeong Seok Yeon, Sul Ki Park, Shinik Kim, Santosh V. Mohite, Won Il Kim, Gun Jang, Hyun-Seok Jang, Jiyoung Bae, Sang Moon Lee, Won G. Hong, Byung Hoon Kim, Yeonho Kim, Ho Seok Park
{"title":"Cover Image, Volume 6, Number 7, July 2024","authors":"Jeong Seok Yeon,&nbsp;Sul Ki Park,&nbsp;Shinik Kim,&nbsp;Santosh V. Mohite,&nbsp;Won Il Kim,&nbsp;Gun Jang,&nbsp;Hyun-Seok Jang,&nbsp;Jiyoung Bae,&nbsp;Sang Moon Lee,&nbsp;Won G. Hong,&nbsp;Byung Hoon Kim,&nbsp;Yeonho Kim,&nbsp;Ho Seok Park","doi":"10.1002/cey2.644","DOIUrl":"10.1002/cey2.644","url":null,"abstract":"<p><b><i>Front cover image</i></b>: Rechargeable zinc-ion batteries (ZIBs) have received much attention because they are cheaper and safer than Li metals. However, the introduction of strong adhesives (i.e. binders) between electrodes and current collectors leads to capacity decay and lower rate capability due to their electrochemical inactivity and low electrical conductivity. This work reports flexible ZIBs without binder- and conductive agent-free pyroprotein-based fibres/VO<sub>2</sub> electrodes. These ZIBs offer application possibilities for portable and wearable power sources. cey2.469.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 7","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.644","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Back Cover Image, Volume 6, Number 7, July 2024 封底图片,第 6 卷第 7 号,2024 年 7 月
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-07-29 DOI: 10.1002/cey2.645
Leijun Ye, Weiheng Chen, Zhong-Jie Jiang, Zhongqing Jiang
{"title":"Back Cover Image, Volume 6, Number 7, July 2024","authors":"Leijun Ye,&nbsp;Weiheng Chen,&nbsp;Zhong-Jie Jiang,&nbsp;Zhongqing Jiang","doi":"10.1002/cey2.645","DOIUrl":"10.1002/cey2.645","url":null,"abstract":"<p><b><i>Back cover image</i></b>: Traditionally, expensive precious metal based electrocatalysts have been relied upon as air electrodes for rechargeable zinc air batteries (ZABs), which have prompted researchers to innovate and develop cost-effective and efficient novel bifunctional electrocatalytic systems. In the article number cey2.457, Jiang and co-workers reported Co/CoO heterojunction nanoparticles (NPs) rich in oxygen vacancies embedded in mesoporous walls of nitrogen-doped hollow carbon nanoboxes coupled with nitrogen-doped carbon nanotubes (P-Co/CoO<sub>V</sub>@NHCNB@NCNT) as bifunctional electrocatalysts synthesized through zeoliteimidazole framework (ZIF-67) carbonization, chemical vapor deposition and O<sub>2</sub> plasma treatment. It displays exceedingly good electrocatalytic performance for oxygen reduction reactions (ORR) and oxygen evolution reactions (OER), significantly superior to standard noble metal-based Pt/C + RuO<sub>2</sub> systems. The enhanced electrocatalytic performance of the P-Co/CoO<sub>V</sub>@NHCNB@NCNT can be attributed to the formation of heterojunctions and oxygen vacancies induced by O<sub>2</sub> plasma treatment.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 7","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.645","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A high-energy-density long-cycle lithium–sulfur battery enabled by 3D graphene architecture 利用三维石墨烯结构实现的高能量密度长循环锂硫电池
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-07-17 DOI: 10.1002/cey2.599
Yan Cheng, Bihan Liu, Xiang Li, Xin He, Zhiyi Sun, Wentao Zhang, Ziyao Gao, Leyuan Zhang, Xiangxiang Chen, Zhen Chen, Zhuo Chen, Lele Peng, Xiangfeng Duan
{"title":"A high-energy-density long-cycle lithium–sulfur battery enabled by 3D graphene architecture","authors":"Yan Cheng,&nbsp;Bihan Liu,&nbsp;Xiang Li,&nbsp;Xin He,&nbsp;Zhiyi Sun,&nbsp;Wentao Zhang,&nbsp;Ziyao Gao,&nbsp;Leyuan Zhang,&nbsp;Xiangxiang Chen,&nbsp;Zhen Chen,&nbsp;Zhuo Chen,&nbsp;Lele Peng,&nbsp;Xiangfeng Duan","doi":"10.1002/cey2.599","DOIUrl":"10.1002/cey2.599","url":null,"abstract":"<p>Lithium–sulfur (Li–S) battery is attracting increasing interest for its potential in low-cost high-density energy storage. However, it has been a persistent challenge to simultaneously realize high energy density and long cycle life. Herein, we report a synergistic strategy to exploit a unique nitrogen-doped three-dimensional graphene aerogel as both the lithium anode host to ensure homogeneous lithium plating/stripping and mitigate lithium dendrite formation and the sulfur cathode host to facilitate efficient sulfur redox chemistry and combat undesirable polysulfide shuttling effect, realizing Li–S battery simultaneously with ultrahigh energy density and long cycle life. The as-demonstrated polysulfide-based device delivers a high areal capacity of 7.5 mAh/cm<sup>2</sup> (corresponds to 787 Wh/L) and an ultralow capacity fading of 0.025% per cycle over 1000 cycles at a high current density of 8.6 mA/cm<sup>2</sup>. Our findings suggest a novel strategy to scale up the superior electrochemical property of every microscopic unit to a macroscopic-level performance that enables simultaneously high areal energy density and long cycling stability that are critical for practical Li–S batteries.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 11","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.599","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic field-assisted electrocatalysis: Mechanisms and design strategies 磁场辅助电催化:机理和设计策略
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-07-11 DOI: 10.1002/cey2.575
Yongwen Sun, Hong Lv, Han Yao, Yuanfeng Gao, Cunman Zhang
{"title":"Magnetic field-assisted electrocatalysis: Mechanisms and design strategies","authors":"Yongwen Sun,&nbsp;Hong Lv,&nbsp;Han Yao,&nbsp;Yuanfeng Gao,&nbsp;Cunman Zhang","doi":"10.1002/cey2.575","DOIUrl":"10.1002/cey2.575","url":null,"abstract":"<p>Electrocatalysis has received a great deal of interest in recent decades as a possible energy-conversion technology involving a variety of chemical processes. External magnetic field application is a powerful method for improving electrocatalytic performance that is customizable and compatible with existing electrocatalytic devices. In addition, magnetic fields can assist in catalyst synthesis and act on the catalytic reaction process. This paper systematically reviews the most recent developments in magnetic field-assisted electrocatalytic enhancement technology. The enhancement of electrocatalysis by a magnetic field is mainly represented in the three features listed below: The spin selectivity effect improves the activity of the catalyst in a magnetic field; furthermore, magnetic fields can improve mass transport and electron transport in catalytic processes (due to Lorentz forces, Kelvin forces, magnetohydrodynamic [MHD], and micro-MHD); the magnetothermal effect may raise the reaction temperature and boost electrocatalytic activity. This review focuses on the rational design of catalytic systems incorporating the interaction between catalysts and magnetic fields, aiming to produce enhanced catalytic effects. The recommendations for further utilization of strategies for electrocatalysis and broader energy technologies for magnetic fields, as well as potential challenges for future research, are also discussed.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 10","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.575","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Energy band engineering of graphitic carbon nitride for photocatalytic hydrogen peroxide production 用于光催化过氧化氢生产的氮化石墨碳能带工程
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-07-09 DOI: 10.1002/cey2.596
Tengyang Gao, Degui Zhao, Saisai Yuan, Ming Zheng, Xianjuan Pu, Liang Tang, Zhendong Lei
{"title":"Energy band engineering of graphitic carbon nitride for photocatalytic hydrogen peroxide production","authors":"Tengyang Gao,&nbsp;Degui Zhao,&nbsp;Saisai Yuan,&nbsp;Ming Zheng,&nbsp;Xianjuan Pu,&nbsp;Liang Tang,&nbsp;Zhendong Lei","doi":"10.1002/cey2.596","DOIUrl":"10.1002/cey2.596","url":null,"abstract":"<p>Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) is one of the 100 most important chemicals in the world with high energy density and environmental friendliness. Compared with anthraquinone oxidation, direct synthesis of H<sub>2</sub>O<sub>2</sub> with hydrogen (H<sub>2</sub>) and oxygen (O<sub>2</sub>), and electrochemical methods, photocatalysis has the characteristics of low energy consumption, easy operation and less pollution, and broad application prospects in H<sub>2</sub>O<sub>2</sub> generation. Various photocatalysts, such as titanium dioxide (TiO<sub>2</sub>), graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>), metal-organic materials, and nonmetallic materials, have been studied for H<sub>2</sub>O<sub>2</sub> production. Among them, g-C<sub>3</sub>N<sub>4</sub> materials, which are simple to synthesize and functionalize, have attracted wide attention. The electronic band structure of g-C<sub>3</sub>N<sub>4</sub> shows a bandgap of 2.77 eV, a valence band maximum of 1.44 V, and a conduction band minimum of −1.33 V, which theoretically meets the requirements for hydrogen peroxide production. In comparison to semiconductor materials like TiO<sub>2</sub> (3.2 eV), this material has a smaller bandgap, which results in a more efficient response to visible light. However, the photocatalytic activity of g-C<sub>3</sub>N<sub>4</sub> and the yield of H<sub>2</sub>O<sub>2</sub> were severely inhibited by the electron-hole pair with high recombination rate, low utilization rate of visible light, and poor selectivity of products. Although previous reviews also presented various strategies to improve photocatalytic H<sub>2</sub>O<sub>2</sub> production, they did not systematically elaborate the inherent relationship between the control strategies and their energy band structure. From this point of view, this article focuses on energy band engineering and reviews the latest research progress of g-C<sub>3</sub>N<sub>4</sub> photocatalytic H<sub>2</sub>O<sub>2</sub> production. On this basis, a strategy to improve the H<sub>2</sub>O<sub>2</sub> production by g-C<sub>3</sub>N<sub>4</sub> photocatalysis is proposed through morphology control, crystallinity and defect, and doping, combined with other materials and other strategies. Finally, the challenges and prospects of industrialization of g-C<sub>3</sub>N<sub>4</sub> photocatalytic H<sub>2</sub>O<sub>2</sub> production are discussed and envisioned.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 11","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.596","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141587620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced water-splitting performance: Interface-engineered tri-metal phosphides with carbon dots modification 提高分水性能:具有碳点修饰的界面工程三金属磷化物
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-07-05 DOI: 10.1002/cey2.631
Yingnan Jiang, Jingkun Yu, Haoqiang Song, Lingling Du, Wenxuan Sun, Yulong Cui, Yuwen Su, Meiling Sun, Guangchao Yin, Siyu Lu
{"title":"Enhanced water-splitting performance: Interface-engineered tri-metal phosphides with carbon dots modification","authors":"Yingnan Jiang,&nbsp;Jingkun Yu,&nbsp;Haoqiang Song,&nbsp;Lingling Du,&nbsp;Wenxuan Sun,&nbsp;Yulong Cui,&nbsp;Yuwen Su,&nbsp;Meiling Sun,&nbsp;Guangchao Yin,&nbsp;Siyu Lu","doi":"10.1002/cey2.631","DOIUrl":"10.1002/cey2.631","url":null,"abstract":"<p>Designing integrated overall water-splitting catalysts that maintain high efficiency and stability under various conditions is an important trend for future development, yet it remains a significant challenge. Herein, novel nanoflower-like tri-metallic Ni–Ru–Mo phosphide catalyst ((Ni–Ru–Mo)P@F-CDs), integrated with F-doped carbon dots (F-CDs), were synthesized via a straightforward hydrothermal process and subsequent phosphatization. Attributable to precise interface engineering and electronic structure optimization, (Ni–Ru–Mo)P@F-CDs exhibit exceptional bi-functional catalytic activity in alkaline conditions, achieving remarkably low overpotentials of 231 and 123 mV for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively, at a current density of 100 mA cm<sup>−2</sup>. Industrially, only 1.426 V is needed for the same efficacy. Additionally, the catalyst requires merely 1.508 and 1.564 V for overall water splitting in 1 M KOH and simulated seawater, respectively, at 100 mA cm<sup>−2</sup>. The catalyst also shows excellent stability, with minimal performance decline over 100 h within 100–200 mA cm<sup>−2</sup>. Density functional theory calculations indicate that the interface structure synergistically optimizes Gibbs free energy for H* and O* intermediates during HER and OER, respectively, accelerating electrochemical water-splitting kinetics.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 10","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.631","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Arc plasma-deposited Co single-atom catalysts supported on an aligned carbon nanofiber for hydrogen peroxide electrosynthesis and an electro-Fenton process 弧等离子体沉积钴单原子催化剂在排列整齐的碳纳米纤维上的支持,用于过氧化氢电合成和电-芬顿工艺
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-07-05 DOI: 10.1002/cey2.582
Chang-Kyu Hwang, Sooyeon Kim, Ki Ro Yoon, Thao Thi Le, Chinh V. Hoang, Jae Won Choi, Wenjun Zhang, Sae Yane Paek, Chung Hyeon Lee, Ji Hyun Lee, Keun Hwa Chae, Sohee Jeong, Seung Yong Lee, Byeong-Kwon Ju, Sang Hoon Kim, Sang Soo Han, Jong Min Kim
{"title":"Arc plasma-deposited Co single-atom catalysts supported on an aligned carbon nanofiber for hydrogen peroxide electrosynthesis and an electro-Fenton process","authors":"Chang-Kyu Hwang,&nbsp;Sooyeon Kim,&nbsp;Ki Ro Yoon,&nbsp;Thao Thi Le,&nbsp;Chinh V. Hoang,&nbsp;Jae Won Choi,&nbsp;Wenjun Zhang,&nbsp;Sae Yane Paek,&nbsp;Chung Hyeon Lee,&nbsp;Ji Hyun Lee,&nbsp;Keun Hwa Chae,&nbsp;Sohee Jeong,&nbsp;Seung Yong Lee,&nbsp;Byeong-Kwon Ju,&nbsp;Sang Hoon Kim,&nbsp;Sang Soo Han,&nbsp;Jong Min Kim","doi":"10.1002/cey2.582","DOIUrl":"10.1002/cey2.582","url":null,"abstract":"<p>Atomically dispersed single-atom catalysts (SACs) on carbon supports show great promise for H<sub>2</sub>O<sub>2</sub> electrosynthesis, but conventional wet chemistry methods using particulate carbon blacks in powder form have limited their potential as two-electron (2e<sup>−</sup>) oxygen reduction reaction (ORR) catalysts. Here, we demonstrate high-performance Co SACs supported on a free-standing aligned carbon nanofiber (CNF) using electrospinning and arc plasma deposition (APD). Based on the surface oxidation treatment of aligned CNF and precise control of the deposition amount in a dry-based APD process, we successfully form densely populated Co SACs on aligned CNF. Through experimental analyses and density functional theory calculations, we reveal that Co SAC has a Co–N<sub>2</sub>–O<sub>2</sub> moiety with one epoxy group, leading to excellent 2e<sup>−</sup> ORR activity. Furthermore, the aligned CNF significantly improves mass transfer in flow cells compared to randomly oriented CNF, showing an overpotential reduction of 30 mV and a 1.3-fold improvement (84.5%) in Faradaic efficiency, and finally achieves an outstanding production rate of 15.75 mol g<sub>cat</sub><sup>−1</sup> h<sup>−1</sup> at 300 mA cm<sup>−2</sup>. The high-performance Co SAC supported on well-aligned CNF is also applied in an electro-Fenton process, demonstrating rapid removal of methylene blue and bisphenol F due to its exceptional 2e<sup>−</sup> ORR activity.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 11","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.582","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of intrinsic vacancies and polarization effect on ternary halo-sulfur-bismuth compounds for efficient CO2 photoreduction under near-infrared light irradiation 鉴定三元卤硫铋化合物的本征空位和极化效应,以便在近红外光照射下高效进行二氧化碳光氧化还原
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-07-05 DOI: 10.1002/cey2.598
Jun Li, Qingqing Chai, Ranran Niu, Wenfeng Pan, Zhiquan Chen, Liang Wang, Kai Wang, Zhongyi Liu, Yifeng Liu, Yao Xiao, Bin Liu
{"title":"Identification of intrinsic vacancies and polarization effect on ternary halo-sulfur-bismuth compounds for efficient CO2 photoreduction under near-infrared light irradiation","authors":"Jun Li,&nbsp;Qingqing Chai,&nbsp;Ranran Niu,&nbsp;Wenfeng Pan,&nbsp;Zhiquan Chen,&nbsp;Liang Wang,&nbsp;Kai Wang,&nbsp;Zhongyi Liu,&nbsp;Yifeng Liu,&nbsp;Yao Xiao,&nbsp;Bin Liu","doi":"10.1002/cey2.598","DOIUrl":"10.1002/cey2.598","url":null,"abstract":"<p>Ternary halo-sulfur bismuth compound Bi<sub>19</sub>X<sub>3</sub>S<sub>27</sub> (X = Cl, Br, I) with distinct electronic structure and full-spectrum light-harvesting properties show great application potential in the CO<sub>2</sub> photoreduction field. However, the relationship between photocatalytic CO<sub>2</sub> reduction performance and the function of halogens in Bi<sub>19</sub>X<sub>3</sub>S<sub>27</sub> is still poorly understood. Herein, a series of Bi<sub>19</sub>X<sub>3</sub>S<sub>27</sub> nanorod photocatalysts with intrinsic X and S dual vacancies were developed, which showed significant near-infrared (NIR) light responses. The types and concentrations of intrinsic vacancies were confirmed and quantified by positron annihilation spectrometry and electron spin resonance spectroscopy. Experimental results showed that Br atoms and intrinsic vacancies (dual Br-S) in Bi<sub>19</sub>Br<sub>3</sub>S<sub>27</sub> could greatly enhance the internal polarized electric field and improve the transfer and separation of photogenerated carriers compared with Bi<sub>19</sub>Cl<sub>3</sub>S<sub>27</sub> and Bi<sub>19</sub>I<sub>3</sub>S<sub>27</sub>. Theoretical calculations revealed that Br atoms in Bi<sub>19</sub>Br<sub>3</sub>S<sub>27</sub> could facilitate CO<sub>2</sub> adsorption and activation and decrease the formation energy of reactive hydrogen. Among Bi<sub>19</sub>X<sub>3</sub>S<sub>27</sub> nanorods, Bi<sub>19</sub>Br<sub>3</sub>S<sub>27</sub> nanorods revealed the highest CO<sub>2</sub> photoreduction activity with CO yield rate of 28.68 and 2.28 μmol g<sub>catalyst</sub><sup>−1</sup> h<sup>−1</sup> with full-spectrum and NIR lights, respectively. This work presents an atomic understanding of the intrinsic vacancies and halogen-mediated CO<sub>2</sub> photoreduction mechanism.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 10","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.598","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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