Article
Chemistry, Physical
Yuanjun Liu, Longkun Zuo, Yuyu Liu, Yiru Wu, Xingmei Guo, Junhao Zhang, Fu Cao, Xiangjun Zheng, Guoxing Zhu
Summary: In this study, PtRu alloy electrocatalyst with small size and network-like structure was synthesized by a solution phase reduction route. The presence of Ru optimized the hydrogen bonding energy on Pt sites and provided functional surface for the adsorption of OH species. The ultrathin size of the alloy units significantly enhanced the catalytic activity for alkaline HOR.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Multidisciplinary
Z. Lotfi, M. B. Gholivand, M. Shamsipur
Summary: In this study, nickel-doped molybdenum diselenide nanosheets were successfully synthesized and integrated with carboxylated multiwalled carbon nanotubes, forming a composite material. The prepared nanocomposite showed excellent catalytic performance as an electrochemical catalyst for methanol oxidation reaction. It exhibited a low onset potential and high activity, and maintained 90% of its activity even after a long duration of time. Therefore, the nickel-doped molybdenum diselenide/carboxylated multiwalled carbon nanotubes composite is a promising and cost-effective anode catalyst for methanol oxidation reaction.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Yaqin Sang, Renyan Zhang, Bin Xu, Jian Yang, Chunyan Zhao, Hui Xu
Summary: In this study, a newly hierarchical quaternary nanocomposite was designed and prepared with excellent methanol oxidation performance, providing guidance for the fabrication of hierarchical composite materials for use in DMFCs.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Kaiyu Dong, Houkang Pu, Te Zhang, Huizhen Dai, Xihui Zhao, Luming Zhou, Kuankuan Wang, Yingying Wang, Yujia Deng
Summary: Designing and modulating the morphological structure of catalysts is important for improving their catalytic activity and stability. In this study, PtRu alloy nanodendrites with tunable components were successfully constructed, and they exhibited excellent electrocatalytic activity and stability in ethylene glycol oxidation reaction and methanol oxidation reaction.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Yanan Li, Yang Chen, Jinlong Qin, Jinhao Chen, Yahui Zhao, Yongshuai Xie, Haiyan He, Huajie Huang
Summary: This study reports a facile and cost-effective method to fabricate rhodium nanocrystals supported by three-dimensional porous hybrid networks as platinum-alternative electrocatalysts for DMFC. The resultant hybrid exhibits exceptional catalytic abilities, including a large electrochemically active surface area, high mass activity, strong poison tolerance, and long lifespan.
Article
Nanoscience & Nanotechnology
Ligang Chen, Xin Liang, Dingsheng Wang, Zuobo Yang, Chun-Ting He, Wei Zhao, Jiajing Pei, Yanrong Xue
Summary: In this study, a facile dual-regulation approach was used to synthesize Ru1Ptn single atom alloy catalysts, which exhibited excellent activity in electrocatalytic reactions. Density functional theory calculations demonstrated the important role of Ru atoms in reaction energetics.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Pingping Yang, Rajkumar Devasenathipathy, Wentao Xu, Zhengrong Wang, Du-Hong Chen, Xiaoxia Zhang, Youjun Fan, Wei Chen
Summary: Deep eutectic solvents (DESs) are promising green sustainable media for the synthesis of various nanomaterials, exhibiting excellent features such as conductivity, high viscosity, biodegradability, and surface tension. They play a vital role in the synthesis of uniform dispersion and ultrafine nanoparticles, as well as the controllable synthesis of materials. Utilizing DESs for the synthesis of Pt-1(CeO2)(0.5)-decorated multiwalled carbon nanotube nanoelectrocatalysts showed improved electrochemical performance, with higher peak current, lower oxidation potential, and CO antipoisoning capability, making them suitable for direct methanol fuel cell applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Tianyi Yang, Fengjuan Qin, Shuping Zhang, Hongpan Rong, Wenxing Chen, Jiatao Zhang
Summary: The synergy among Pt, Sn, and Ru, along with the stable intermetallic structure and active surface structure, contribute to the enhanced performance of Ru-Pt3Sn NCs in methanol electroxidation compared to commercial Pt/C.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Yanyun Wang, Xiwang Zhao, Qinghua Deng, Jiehua Bao, Xiaoli Sheng, Yuzhong Huang, Yiwei Zhang, Yuming Zhou
Summary: In this study, Ru-doped PtSn alloy nanoplates were synthesized by adjusting the alloy composition, and these nanoplates exhibited extraordinary catalytic activity and durability in methanol oxidation reactions, which can be attributed to the synergistic effect of the alloy components and the morphological advantages.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Nazimul Hoque, Manash J. Baruah, Seonghwan Lee, Young-Bin Park, Rupjyoti Dutta, Subhasish Roy, Kusum K. Bania
Summary: The study highlights the excellent performance of the Cu(OH)(2)-Ni(OH)(2) supported on zeolite-Y combined with multi-walled carbon nanotube (MWCNT) multicomponent hybrid system for methanol oxidation reaction. The interaction between MWCNT and Cu(OH)(2) and Ni(OH)(2) enhances the overall MOR activity of the electrocatalyst by controlling the binding energy values of Cu and Ni and influencing the acidity and basicity of the catalyst. Furthermore, the Pt-electrode modified with the hybrid M(OH)(2)-Y-MWCNT exhibits higher CO tolerance compared to commercial Pt/C electrocatalyst.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Xueting Zhang, Lan Hui, Dengxin Yan, Jinze Li, Xi Chen, Han Wu, Yuliang Li
Summary: Controlling the structure and properties of catalysts through atomic arrangement is crucial for producing advanced catalysts. In this study, the introduction of defect-rich structures, low coordination number, and tensile strain in 3D palladium nanoparticles resulted in a special arrangement of metal atoms, which greatly enhanced the catalytic activity and stability for methanol oxidation reaction (MOR).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Xueting Zhang, Lan Hui, Dengxin Yan, Jinze Li, Xi Chen, Han Wu, Yuliang Li
Summary: Controlling the arrangement of metal atoms is crucial for the structure and properties of catalysts, leading to the development of advanced catalysts. In this study, a special structure was formed in three-dimensional palladium nanoparticles through the introduction of defect-rich structures, low coordination number, and tensile strain. The resulting catalyst showed improved oxidation and removal of CO intermediates in the methanol oxidation reaction, displaying high current density and mass activity compared to pure palladium nanoparticles. The catalyst also exhibited robust stability after multiple cycles.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Cheoulwoo Oh, Jiwon Kim, Yun Jeong Hwang, Ming Ma, Jong Hyeok Park
Summary: This study successfully utilized ZrO2 nanotubes decorated with Co3O4 nanoparticles as electrochemical anode to achieve partial oxidation of methane, producing C3 alcohol products. The nanostructure engineering strategy contributes to enhancing catalytic activity for electrochemical methane oxidation, providing a new synthesis approach for researchers.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Jiahui Chen, Munir Ahmad, Yan Zhang, Huangqing Ye, Lei Wang, Jiujun Zhang, Xian-Zhu Fu, Jing-Li Luo
Summary: Developing high-performance electrocatalysts is crucial for efficient methanol electro-reforming. In this study, a NiCoMo alloy pre-catalyst with nanosheets covered nanowires arrays is proposed, which undergoes surface reconstruction and forms a Mo substituted NiCoOOH layer as the real catalyst. The surface engineered catalysts exhibit high activity and stability, achieving efficient co-production of hydrogen and formate. The incorporation of Mo plays multiple roles in stabilizing the structure, promoting surface reconstruction, modulating electronic structure, and boosting catalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Beibei Pang, Xiaokang Liu, Tianyang Liu, Tao Chen, Xinyi Shen, Wei Zhang, Sicong Wang, Tong Liu, Dong Liu, Tao Ding, Zhaoliang Liao, Yafei Li, Changhao Liang, Tao Yao
Summary: The interaction between different atomic species of bimetallic nanoparticles is crucial for designing efficient catalysts. Utilizing a laser-assisted strategy, PtRu alloys with isolated Pt sites anchored on the Ru host were studied under electrocatalytic conditions, showing enhanced activity due to increased alloying degree. The surface-restructured PtRu alloy exhibited outstanding hydrogen evolution reaction (HER) activity and stability under various pH values, demonstrating the feasibility of surface engineering for designing advanced bimetallic catalysts.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
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)