Article
Chemistry, Physical
Wan Jae Dong, Jin Wook Lim, Jae Yong Park, Chul Jong Yoo, Sangwon Baek, Won Seok Cho, Wanho Kim, Jong-Lam Lee
Summary: Experimental study in this research found that Sn/Cu catalysts with cone shape exhibited better performance compared to foil and rod structures, confirming that sharpening of noble metal catalysts can enhance CO2 electrochemical reduction efficiency. Local electric field induced by sharp tips plays a significant role in improving CO efficiency and lowering the onset potential of CO2 reduction reaction.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Hao Sun, Ling Lin, Wei Hua, Xulan Xie, Qiaoqiao Mu, Kun Feng, Jun Zhong, Fenglei Lyu, Zhao Deng, Yang Peng
Summary: In this study, an atomically dispersed Co-Cu alloy catalyst with high methane Faradaic efficiency and selectivity was fabricated through the reconstruction of a metal-organic framework.
Article
Chemistry, Physical
Abdullah M. Asiri, Jing Gao, Sher Bahadar Khan, Khalid A. Alamry, Hadi M. Marwani, Mohammad Sherjeel Javed Khan, Waheed A. Adeosun, Shaik M. Zakeeruddin, Dan Ren, Michael Gratzel
Summary: This study reveals the catalytic performance of polycrystalline copper, Cu2O-derived copper, and CuO-derived copper in the electroreduction of CO2. The results show that all three catalysts exhibit high electroreduction efficiency and production rate in a flow electrolyzer. The selectivity and activity of ethylene-dominated C2+ products are similar on the three catalysts at the same current density.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Song Jin, Zhimeng Hao, Kai Zhang, Zhenhua Yan, Jun Chen
Summary: The electrochemical carbon dioxide reduction reaction is an important pathway for converting renewable electricity into fuels and feedstocks, with the conversion of CO2 into CO being a promising reaction. Advancements in catalyst and electrolyte design, along with understanding the catalytic mechanism, are crucial for promoting the technology towards industrial implementation. However, there are still challenges and future directions for the industrial application of this technology.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Tao Song, Hai Liu, Errui Liu, Fei Wang, Li Cui, Xiaoli Zhang, Tianxia Liu
Summary: This study reported a strategy to promote the electrochemical reduction of carbon dioxide to carbon monoxide in CuO nanosheets by metal doping. The CuO/Bi, CuO/In, and CuO/Sn catalysts showed high efficiency and selectivity for the electrocatalytic reduction of carbon dioxide to carbon monoxide at low overpotential, while inhibiting the occurrence of hydrogen evolution reaction. Moreover, the CuO/Sn catalyst demonstrated excellent stability in 0.1 mol/L KHCO3 electrolyte, with a constant current density for 6 hours.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Review
Biochemistry & Molecular Biology
Tse-Wei Chen, Shen-Ming Chen, Ganesan Anushya, Ramanujam Kannan, Abdullah G. Al-Sehemi, Saranvignesh Alargarsamy, Pandi Gajendran, Rasu Ramachandran
Summary: Significant advancements have been made in CO2 reduction processes for various applications, but technical obstacles in large-scale CO2 reduction have not received sufficient attention. Researchers face challenges in terms of low Faraday efficiency, high overpotential, and low limiting current density. This review summarizes the latest research progress on electrocatalysts and cell designs for the conversion of CO2 into valuable products.
Article
Chemistry, Multidisciplinary
Wu-Bin Wan, Yi-Tong Zhou, Shu-Pei Zeng, Hang Shi, Rui-Qi Yao, Zi Wen, Xing-You Lang, Qing Jiang
Summary: The authors report a robust electrocatalyst, intermetallic Cu3Sn, seamlessly integrated on a self-supported bimodal nanoporous Cu skeleton for selective electroreduction of CO2 to CO. The nanoporous Cu3Sn/Cu hybrid electrodes exhibit low overpotential, high partial current density, excellent stability, and selectivity, making them attractive alternatives to precious metal-based electrocatalysts for CO2 reduction.
Article
Chemistry, Physical
Man Ho Han, Dongjin Kim, Sangkuk Kim, Seung-Ho Yu, Da Hye Won, Byoung Koun Min, Keun Hwa Chae, Woong Hee Lee, Hyung-Suk Oh
Summary: This study demonstrates that nickel sulfide nanoparticles can mimic the electronic structure of nickel single atom catalysts and enhance catalytic activity in CO2 reduction reaction. However, the stability of nickel sulfide is low and needs further improvement.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Qingcheng Yang, Yang Zhao, Linghu Meng, Zhixiao Liu, Jiao Lan, Yanlong Zhang, Huigao Duan, Yongwen Tan
Summary: This study successfully improved the reduction of CO2 to formate by synthesizing nanoporous ordered intermetallic tin-tellurium. The intermetallic SnTe exhibited high selectivity, Faradaic efficiency, and stability for formate production. The strong orbital interaction in the alloy was found to promote the hydrogenation and desorption steps, leading to enhanced formate production.
Article
Chemistry, Multidisciplinary
Jin Hyuk Cho, Chaehyeon Lee, Sung Hyun Hong, Ho Yeon Jang, Seoin Back, Myung-gi Seo, Minzae Lee, Hyung-Ki Min, Youngheon Choi, Youn Jeong Jang, Sang Hyun Ahn, Ho Won Jang, Soo Young Kim
Summary: This study demonstrates the efficient electrocatalytic conversion of CO2 to CO using zeolite-imidazolate-frameworks-8 (ZIF-8) doped with transition metal ions (Ni, Fe, and Cu). The optimized Cu-doped ZIF-8 showed high partial current density and maximum Faradaic efficiency, with stable catalytic activity. The study also provides insights into the CO2 reduction pathway.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Xiangxiang Li, Shuling Chang, Yanting Wang, Lihong Zhang
Summary: The study demonstrates the efficient and selective conversion of CO2 to CO using coral-like porous Ag catalysts, which could have significant implications in mitigating environmental and energy crises.
Article
Chemistry, Physical
Yanle Li, Ziqi Tian, Liang Chen
Summary: Bimetallic Cu-Pd alloys exhibit excellent activity and selectivity for the electrochemical conversion of CO2, with the interface effect promoting the formation of C-C bonds and subsequent C-2 products. Theoretical simulations comparing ordered and phase-separated Cu-Pd alloys provide insights into the catalytic mechanism and potential for designing efficient Cu-based alloy catalysts for the electrochemical CO2RR.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Yan Wen, Nan Fang, Wenqiang Liu, Tang Yang, Yong Xu, Xiaoqing Huang
Summary: Cu7S4 nanosheets can efficiently catalyze CO2 reduction to formate (HCOO-). Unlike CuO, Cu-S bond in Cu7S4 promotes protonation to produce HCOO-. This work provides a highly efficient catalyst for CO2RR to HCOO- and may contribute to catalyst design for CO2RR.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Akihiko Anzai, Manabu Higashi, Miho Yamauchi
Summary: This study demonstrated the electrochemical CO2 reduction (eCO2R) by directly introducing 60% air-containing CO2 mixed gas using a porous Cu network cathode formed on a hydrophobic gas diffusion layer (Cu/P-GDL). The Cu/P-GDL exhibited a remarkable faradaic efficiency of 85% for the production of C2+ chemicals, while a Cu cathode constructed on a conventional carbon gas diffusion layer (Cu/C-GDL) did not produce eCO2R products or H-2. The electrolyzer with Cu/P-GDL and optimized anode configuration achieved a partial current density of 132 mA cm(-2) for C2+ chemicals even in the presence of 12% O-2.
CHEMICAL COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Jianan Erick Huang, Fengwang Li, Adnan Ozden, Armin Sedighian Rasouli, F. Pelayo Garcia de Arquer, Shijie Liu, Shuzhen Zhang, Mingchuan Luo, Xue Wang, Yanwei Lum, Yi Xu, Koen Bertens, Rui Kai Miao, Cao-Thang Dinh, David Sinton, Edward H. Sargent
Summary: Carbon dioxide electroreduction (CO2R) is being actively studied as a promising route to convert carbon emissions to valuable chemicals and fuels. A study found that concentrating potassium cations in the vicinity of electrochemically active sites accelerates CO2 activation to enable efficient CO2R in acid. The research achieved a high CO2R efficiency on copper at pH <1 with a single-pass CO2 utilization of 77%.
Article
Multidisciplinary Sciences
Ke Wu, Hongxia Zhong, Quanbing Guo, Jibo Tang, Jing Zhang, Lihua Qian, Zhifeng Shi, Chendong Zhang, Shengjun Yuan, Shunping Zhang, Hongxing Xu
Summary: Stacking atomically thin films allows for the construction of van der Waals heterostructures with exotic functionalities. Here, we investigate the optical transitions in WS2/WSe2 heterobilayers and attribute a specific transition to an indirect Gamma-K transition. Our findings provide new insights into the properties of twist-angle-dependent excitons.
NATIONAL SCIENCE REVIEW
(2022)
Article
Electrochemistry
Benjamin Mulwa Kathale, Hengbo Xiao, Shengxiong Yang, Hongxia Yin, Tianshui Yu, Xiangji Zhou, Lihua Qian, Junwu Xiao, Pengxiang Lei, Xiuhong Li
Summary: By modulating the structure of NiFe catalysts using different concentrations of F, this study achieves a hybrid structure with good conductivity and collaborative operation between Ni and Fe, leading to improved oxygen evolution reaction (OER) performance.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Ke Wu, Hongxia Zhong, Quanbing Guo, Jibo Tang, Zhenyu Yang, Lihua Qian, Shengjun Yuan, Shunping Zhang, Hongxing Xu
Summary: This study reveals the correlation between the patterned photoluminescence (PL) emission and the details of defects in chemical vapor deposition (CVD)-grown hexagonal WS2 monolayer through optical and structural characterizations and ab initio calculations. The temperature-dependent PL spectra show the correlation between defect-trapped and band-edge exciton emission. High-resolution scanning transmission electron microscopy identifies the positive correlation between WSx-vacancy density and PL intensity. Ab initio calculations and molecule adsorption PL spectra show that the coexistence of p- and n-doping effects weakens the modulation of molecular adsorption on PL intensity.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Plant Sciences
Erkui Yue, Yuqing Huang, Lihua Qian, Qiujun Lu, Xianbo Wang, Haifeng Qian, Jianli Yan, Songlin Ruan
Summary: Tetrastigma hemsleyanum is a rare and wild medicinal resource, with proanthocyanidins accumulating in large amounts in its purple leaves and involving several key genes in the metabolic pathway, indicating a complex regulatory network that may differ from other species.
Article
Business, Finance
Lihua Qian, Jiqian Wang, Feng Ma, Ziyang Li
Summary: This study mainly focuses on the role of jumps in forecasting Bitcoin volatility using linear and nonlinear mixed data sampling models. The results provide strong evidence that using a forecasting model that incorporates continuous-time jump and two-stage regimes can significantly improve predictive accuracy and achieve high economic gains, particularly during highly volatile periods such as Black Swan events.
FINANCE RESEARCH LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Weimin Yang, Miao-Miao Liang, Guo-Ya Sun, Jingyu Wang, Yonglin He, Lihua Qian, Jing-Liang Yang, Pei-Wen Ren, Min Gao, Zhong-Qun Tian, Jian-Feng Li, Zhilin Yang
Summary: This study constructs a three-dimensional multi-hot spot model using the Monte Carlo algorithm to investigate the influence of multiple random factors on the fluctuations of electric field intensity. It is found that the fluctuations can be effectively suppressed when the hot spot density exceeds a certain threshold value. These theoretical results are confirmed by preliminary surface-enhanced Raman scattering experiments. This study is of great significance for understanding the interplay between disorder and local electric field fluctuations in surface plasmon resonance complex systems and provides a new method for precise quantitative analysis in plasmon-enhanced spectroscopy techniques.
Article
Materials Science, Multidisciplinary
Hengbo Xiao, Kai Chi, Hongxia Yin, Xiangji Zhou, Pengxiang Lei, Peizhi Liu, Jiakun Fang, Xiuhong Li, Songliu Yuan, Zhen Zhang, Yaqiong Su, Junjie Guo, Lihua Qian
Summary: Oxygen vacancies in transition metal oxides can be used to modulate surface reconstruction for enhancing the oxygen evolution reaction (OER). In this study, oxygen vacancies were specifically localized within MoO4 tetrahedrons rather than CoO6 octahedrons in the CoMoO4 catalyst, resulting in the coherent reconstruction of CoO6 octahedrons into pure CoOOH with tunable OER activities. The manipulated distorted polyhedrons facilitated the complete transformation of CoO6 octahedrons into pure CoOOH at lower potentials, leading to a significantly improved intrinsic activity for OER.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Electrochemistry
Hailing Wang, Xiangji Zhou, Tianshui Yu, Xianglong Lu, Lihua Qian, Pan Liu, Pengxiang Lei
Summary: Single atom alloy catalysts can tune the electronic structure and performance of bimetallic catalysts. Understanding surface restructuring under reaction conditions is important for optimizing catalytic performance. In this study, a nanoporous AgCu single atom alloy catalyst was fabricated to achieve CO2-reduction-induced surface restructuring, enhancing CO2 reduction selectivity and suppressing hydrogen evolution.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Qiang Wang, Hailing Wang, Tengfei Gao, Lihua Qian, Liangcai Zeng, Qiang Chen, Xinwang Liu
Summary: This study investigated the microstructures and mechanical properties of an annealed dual-phase high-entropy alloy. The results showed that rod-like B2 phase precipitated from the FCC-solution matrix with increased annealing temperature. The higher annealing temperature resulted in a significant decrease in yield strength, but an increase in fracture strain and work-hardening capacity. The activation volume of the annealed HEA exhibited an abnormal trend due to the formation of co-clusters.
Article
Business, Finance
Lihua Qian, Qing Zeng, Tao Li
Summary: This study explores the predictability of geopolitical risk (GPR) on oil market volatility using autoregressive Markov-regime switching model. The findings suggest that high GPR can lead to high fluctuations in the oil market. GPR has different effects depending on the market states. The study also shows that GPR has useful information to forecast oil market volatility, particularly during recessions.
INTERNATIONAL REVIEW OF ECONOMICS & FINANCE
(2022)
Article
Chemistry, Multidisciplinary
Xiangji Zhou, Lihua Qian, Tianshui Yu, Hengbo Xiao, Lin Liu, Yao Yu, Pengxiang Lei
Summary: In this study, it is found that the volume diffusion of Bi atoms in nanoporous AgBi can be driven by electrochemical potential at room temperature, leading to the conformal covering of an amorphous Bi2O3 shell. The growth kinetics of the amorphous shell show that the potential dependence of Bi volume diffusion activation energy is 0.932 eV V-1. Compared with temperature dependence, potential supply is more feasible to modulate volume diffusion rate and shell thickness.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Electrochemistry
Tianshui Yu, Xiangji Zhou, Yu Chen, Jin Chen, Songliu Yuan, Zhen Zhang, Lihua Qian, Song Li
Summary: A hierarchically nanoporous gold (H-NPG) with high CO conversion of 96% was configured, which is mainly determined by the high fraction of active sites onto the nanoscale skeletons and the high volume of hierarchically nanoporous channels. In addition, the H-NPG exhibits robust durability with only a 22% reduction of CO specific current density after 22 hours of CO2ER, compared to a 55% reduction in nanoporous gold (NPG) with nanoporous channels. This durability is attributed to the conversion of some crystalline facets with low activity to (110) facets with high activity during CO2ER.
ELECTROCHIMICA ACTA
(2023)
Article
Green & Sustainable Science & Technology
Bo Shi, Dandan Zhu, Pengxiang Lei, Ximin Li, Hengbo Xiao, Lihua Qian
Summary: In this study, hazardous chemicals in industrial effluent, including phosphorate, silicate, and arsenate, are selectively precipitated onto inorganic flocculants, while the vanadate dissolved in an aqueous solution remains undisturbed. High purity NH4VO3 is produced by crystallization from the purified solution. Polyaluminum sulfate with an optimal amount of 50 g/L is demonstrated to selectively remove phosphorate, silicate, and arsenate with removing efficiencies of 93.39%, 97.11%, and 88.31%, respectively. The purity of NH4VO3 from the purified solution reaches 99.21%, compared to 98.33% in the product from the crude solution. This purification technology not only produces NH4VO3 with high added value but also reduces environmental pollution.
JOURNAL OF RENEWABLE MATERIALS
(2023)
Proceedings Paper
Computer Science, Artificial Intelligence
Yu Bao, Hao Zhou, Shujian Huang, Dongqi Wang, Lihua Qian, Xinyu Dai, Jiajun Chen, Lei Lin
Summary: This paper introduces a method called latent-GLAT, which uses discrete latent variables to capture word categorical information and employs curriculum learning technique to alleviate the multi-modality problem. Experimental results show that this method outperforms strong baselines without the help of an autoregressive model, further broadening the application scenarios of the parallel decoding paradigm.
PROCEEDINGS OF THE 60TH ANNUAL MEETING OF THE ASSOCIATION FOR COMPUTATIONAL LINGUISTICS (ACL 2022), VOL 1: (LONG PAPERS)
(2022)
Article
Horticulture
Qiaojuan Fu, Xiaoying Zhang, Fukang Zhao, Ruoxin Ruan, Lihua Qian, Chunnan Li
Summary: In this study, a classification model GL-CNN based on a convolutional neural network is proposed to solve the problem of Cymbidium classification. By expanding the image set and using a cascade fusion strategy, it achieves the highest classification prediction accuracy.
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)
