Article
Chemistry, Multidisciplinary
Zhitong Wang, Yansong Zhou, Dongyu Liu, Ruijuan Qi, Chenfeng Xia, Mingtao Li, Bo You, Bao Yu Xia
Summary: In this study, a carbon-confined indium oxide electrocatalyst was developed for stable and efficient CO2 reduction. The research shows that carbon protection can prevent the oxidation of indium and enhance the selectivity and activity of the reaction towards CO2 reduction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Guanzhou Li, Yangchang Mu, Zongxiong Huang, Naiguang Wang, Yuanye Chen, Jun Liu, Guoping Liu, Oi Lun Li, Minhua Shao, Zhicong Shi
Summary: A poly-active centric Co3O4-CeO2/Co-N-C catalyst with high oxygen reduction reaction (ORR) catalytic activity was prepared and showed excellent performance in Zinc-air batteries, attributed to the synergistic effect among Co3O4, CeO2, and Co-N-C, outstanding electrical conductivity, and large surface area. This catalyst has great potential in the application of metal-air batteries due to its high catalytic activity, environmental friendliness, and facile synthesis process.
SCIENCE CHINA-MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Sweta Bastia, Yilleng Titus Moses, Niharika Kumar, Rajashree P. Mishra, Yatendra S. Chaudhary
Summary: Researchers have successfully synthesized modified NiTiO3-based nanoelectrocatalysts with Ni metal sites and oxygen vacancies for efficient activation and reduction of N-2. The catalysts have been further modified with ultra-small metal nanocrystal co-catalysts to improve charge separation and reduce overpotential requirements. Electrochemical and characterization experiments confirm the excellent performance of these modified catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Huiying Qi, Baofeng Tu, Mojie Cheng, Tonghuan Zhang
Summary: The study developed a highly active perovskite nanocomposite for intermediate-temperature solid oxide fuel cells, which showed superior performance through nano-scale assembly and active surface oxygen species, enhancing oxygen catalysis.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Multidisciplinary Sciences
Si-Wen Ke, Wei Li, Yuming Gu, Jian Su, Yifan Liu, Shuai Yuan, Jing-Lin Zuo, Jing Ma, Ping He
Summary: In this study, bifunctional cathode catalysts for ORR/OER were constructed in a COF platform by incorporating Ni-bis(dithiolene) and Co-porphyrin units. The resulting bimetallic Ni/Co-COF exhibited high surface area, good electrical conductivity, and excellent chemical stability. Li-O2 batteries with the Ni/Co-COF-based cathode showed low discharge/charge potential gap and stable cycling, comparable to PtAu nanocrystals. DFT computations and control experiments revealed the critical role of Ni and Co sites in regulating the Li2O2 deposition.
Article
Materials Science, Ceramics
Tian Song, Tian Xia, Liping Sun, Qiang Li, Hui Zhao
Summary: Solid oxide fuel cells (SOFCs) have been widely applied in energy conversion field due to their high efficiency, low cost and pollution, and flexible fuel choice. However, the sluggish oxygen reduction reaction (ORR) rate is a challenge for the development of SOFCs. In this study, a series of Ruddlesden-Popper-type Sr2.7Pr0.3Fe2-xCuxO7-delta (SPFCx) oxides were synthesized and evaluated as potential SOFCs cathodes. Among them, Sr2.7Pr0.3Fe1.9Cu0.1O7-delta (SPFC10) showed the best electrocatalysis performance and improved oxygen reduction kinetics. Cu-doping was found to enhance oxygen transport kinetics, increase oxygen vacancy concentration, and improve electrocatalysis performance.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Hui Ouyang, Jiaxin Xian, Jiaqi Gao, Lvxia Zhang, Wenwen Wang, Zhifeng Fu
Summary: A study on the preparation and application of yolk-shell Co SASCs highlights the potential of direct chemical interactions for the formation of highly active catalysts and their use in catalysis and chemiluminescence.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xuehui Huang, Xuefang Wang, Xinke Yang, Penghui Deng, Wenzhen Chen, Xiangao Hu
Summary: In this study, spherical alpha-Fe2O3 was used as a template for the first time to synthesize LaFeO3 perovskite catalysts. Among the three synthesis methods, the catalyst prepared by the molten salt method showed the best crystallinity. The M-LF-600 catalyst retained the spherical structure of the alpha-Fe2O3 template and had the highest BET surface area. XPS analysis indicated that the M-LF-600 catalyst had the highest Fe3+/Fe2+ molar ratio and the best surface oxygen adsorption capacity. CO oxidation reaction demonstrated that the M-LF-600 catalyst exhibited the best catalytic performance.
Article
Chemistry, Multidisciplinary
Jingxin Xie, Lijie Zhong, Xin Yang, Dequan He, Kanglong Lin, Xiaoxia Chen, Huan Wang, Shiyu Gan, Li Niu
Summary: This paper reports a non-precious Co-based catalyst (CoPSe) with phosphorus and selenium tuning for the electrosynthesis of hydrogen peroxide (H2O2) in acidic media. The CoPSe catalyst showed optimized oxygen reduction activity and H2O2 selectivity, and was combined with the electro-Fenton reaction for efficient degradation of organic pollutants.
CHINESE CHEMICAL LETTERS
(2024)
Review
Chemistry, Multidisciplinary
Yuanzhi Zhu, Xiaoxuan Yang, Cheng Peng, Cameron Priest, Yi Mei, Gang Wu
Summary: This passage describes the application of carbon-supported single-atom catalysts in the electrochemical CO2 reduction reaction, and summarizes research progress on synthesis methods, intrinsic activity differences of metal centers, and strategies for enhancing activity.
Article
Chemistry, Multidisciplinary
Zhilong Song, Xiao Wang, Fangting Liu, Qionghua Zhou, Wan-Jian Yin, Hao Wu, Weiqiao Deng, Jinlan Wang
Summary: Developing activity descriptors using machine learning can accelerate the design of high-performance and low-cost electrocatalysts. In this study, a interpretable machine learning method, multi-task symbolic regression, was used to construct a universal activity descriptor for evaluating the oxygen evolution reaction (OER) performance of oxide perovskites. The descriptor achieved high accuracy and generalization ability. By utilizing this descriptor and Bayesian-optimized parameters, promising double perovskites with excellent OER activity were predicted and evaluated. The synthesis and characterization of the two best-performing nickel-based perovskites were successfully conducted experimentally. This work presents a new approach for machine learning-based material design by utilizing multiple data sources.
MATERIALS HORIZONS
(2023)
Article
Electrochemistry
Yunjie Yang, Minli Bai, Jizu Lv, Linsong Gao, Yang Li, Xuecheng Lv, Yubai Li, Yongchen Song
Summary: In this study, a 1D model was proposed to investigate the structural evolution and aging mechanism of fuel cell cathode catalytic layer. The results show that the severe dissolution of catalyst particles near the membrane interface leads to significant loss and uneven aging of the catalyst.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Tiezhu Ma, Tian Xia, Qiang Li, Lihua Huo, Hui Zhao
Summary: In this study, the Ruddlesden-Popper Sr2.9La0.1Fe1.9Ni0.1O7_(d) (SLFN) oxide is evaluated as an efficient oxygen electrode material for solid oxide fuel cells (SOFCs) with potential applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Da Zhang, Ruixin Ding, Yuanzheng Tang, Lianxiang Ma, Yan He
Summary: In this study, N-doped carbon nanotubes and Co/N-CNT catalysts were synthesized by grinding and subsequent calcination, without strict control of the reaction conditions. The catalysts show outstanding ORR performance and stability due to the Co-CNT interactions and catalytic graphitization ability of Co nanoparticles. The optimized catalyst exhibits better ORR activity and excellent methanol tolerance in alkaline media.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Min Zhang, Juan Wang, Xin Rong, Xiu-Li Lu, Tong-Bu Lu
Summary: This study reports a Bi-based catalyst derived from the in-situ electroreduction of Bi2O2CO3 modified with iodine and pyrenyl-graphdiyne (PGDY) on the surface for efficient electroreduction of CO2 to formic acid/formate in acidic electrolyte. The catalyst exhibited high partial current density and Faradaic efficiency, as well as long-term operational stability. The synergistic effect of surface iodine and PGDY was found to be responsible for the active and stable CO2 electroreduction process.
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)