Article
Chemistry, Physical
Shuai Wang, Junfeng Feng, Hui Pan
Summary: In this study, a nitrogen-doped lignin-derived hierarchical porous carbon material was synthesized using alkali lignin as carbon source, melamine as nitrogen source, and KCl as salt template. The material exhibited unique structural properties, including a large surface area, high nitrogen content, and hierarchical porous structure, leading to superior electrochemical performance. It showed high specific capacitance and excellent cycling stability, indicating its great potential for supercapacitors.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Applied
Kai Chen, Sen Weng, Jing Lu, Jianfeng Gu, Guoqi Chen, Oudong Hu, Xiancai Jiang, Linxi Hou
Summary: This study reported a facile approach to prepare nitrogen-doped carbon material with tunable pore structure, showing excellent electrochemical performance. By adjusting the calcination temperature and active agents, the morphology and pore structure of the material can be effectively controlled. The final product exhibited outstanding performance in terms of specific capacitance and cycle stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Jiajun Li, Junyu Yang, Peiru Wang, Ziyang Cong, Feiyan Shi, Li Wei, Kai Wang, Yao Tong
Summary: In this study, NiCo2S4 nanoparticles were synthesized on hierarchical porous carbon (HPC) derived from enzymatic hydrolysis lignin using a solvothermal method. The composite electrode material exhibited outstanding electrochemical performance and energy storage capabilities.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Environmental
Pingxian Feng, Huan Wang, Peipei Huang, Lijie Zhong, Shiyu Gan, Wei Wang, Li Niu
Summary: Lignin-derived carbon electrode materials with a high carbon content and a rich benzene ring structure were studied for supercapacitors, and it was found that the nanoporous structure significantly affects the capacitive performance. Three nitrogen-doped nanoporous carbons were prepared using alkali lignin as a carbon source, and the effect of different nanopore distributions on the electrochemical performance was examined. The carbon activated by ZnC2O4 showed a hierarchical porous structure composed of nanosheets, enabling it to store charge and transfer ions simultaneously. It achieved a maximum specific capacitance of 254F/g at 0.5 A/g, surpassing the microporous-dominated carbon activated by K2CO3 and mesoporous-dominated carbon obtained by the SiO2 template method. This study provides theoretical guidance for the preparation of excellent lignin-derived carbon electrode materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Shuang Liu, Shubin Wu, Hao Cheng
Summary: A nitrogen-doped biomass-derived carbon material, NHPC-1, was synthesized by activating nitrogen-doped lignin-char. NHPC-1 exhibits a large micropore surface area, a high nitrogen content, and a hierarchical pore structure. It shows an ultra-high toluene adsorption capacity and satisfactory recyclability performance, making it a promising candidate for removing VOCs.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Weining Li, Kunyin Wang, Zhuo Li, Chengyu Sun, Shuyang Zhao, Dequan Zhang, Kun Chen, Aijun Guo
Summary: This study prepared carbon materials with a hierarchical porous structure using waste polyurethane as the carbon precursor. By optimizing the specific surface area and pore structure, the electrochemical performance of the materials was enhanced. The experiment demonstrated that the prepared carbon material had a uniform pore size distribution and exhibited excellent supercapacitor performance.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
Jiamei Yang, Fuquan Xiong, Hang Wang, Bole Ma, Feng Guo, Yan Qing, Fuxiang Chu, Yiqiang Wu
Summary: In this study, nitrogen-doped lignin-based carbon nanospheres (NCS) were successfully prepared and showed potential applications in supercapacitors. The introduction of nitrogen atoms increased the active site of the materials and improved the capacitance performance.
Article
Engineering, Environmental
Hang Wang, Yuan Yuan, Fuquan Xiong, Bole Ma, Jiamei Yang, Yan Qing, Fuxiang Chu, Yiqiang Wu
Summary: This study proposes a bidirectional pore-creating strategy to construct heteroatom-doped lignin-based porous carbon materials with high electrochemical active area. The obtained materials possess tunable specific surface area and high heteroatom content. They exhibit excellent ions appetency, ultrahigh capacitance, and extremely long cyclic stability, making them promising for industrial-scale supercapacitors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Fangbao Fu, Huan Wang, Dongjie Yang, Xueqing Qiu, Zhixian Li, Yanlin Qin
Summary: Lignin porous carbons have shown potential as carbon electrode materials for supercapacitors, but their low capacitance has been a problem. Combining lignin porous carbons with polyaniline can achieve high capacitance, but the poor compatibility between the two materials has hindered their application. In this study, three different geometries of lignin porous carbons were used as hosts to anchor polyaniline for carbon/polyaniline composites. It was found that the lamellar hierarchical lignin porous carbon with crumpled nanosheets provided a large surface area for nucleation of aniline, resulting in uniform loading of interpenetrating polyaniline nanofibers. The resulting lamellar hierarchical porous carbon/polyaniline composite exhibited high capacitance at different current densities. This work provides guidance for designing carbon hosts in high-performance supercapacitor composite electrodes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Ruijie Li, Zhipeng Shen, Haoyu Zheng, Lu Jin, Yonggang Zhang, Weiyong Yuan, Xuefei Wang
Summary: The translation describes the preparation and properties of nitrogen and oxygen co-doped porous carbon materials, which exhibit high mass-specific capacitance, excellent rate capability, cyclic stability, and high energy density. These porous carbon materials are crucial for energy storage and have potential applications in various fields.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
Tingting Chen, Lu Luo, Lingcong Luo, Jianping Deng, Xi Wu, Mizi Fan, Guanben Du, Weigang Zhao
Summary: The study focuses on N-doped hierarchically activated porous carbon materials (ACBS) for super capacitor applications, which exhibit high surface area and pore volume. The ACBS obtained using 700 degrees C as a post-treatment temperature shows high specific capacity at different current densities, demonstrating superior electrochemical performance.
Article
Engineering, Electrical & Electronic
Dechen Liu, Wenli Zhang, Debo Liu, Jin Yang, Jian Yin, Haibo Lin
Summary: A facile synthesis strategy was developed for lignin-derived three-dimensional hierarchical porous carbon (LHPC) in this study. The wet KOH was found to have an exfoliation effect on assisting the formation of hierarchical porous structure of LHPC, while H2O played a key role as an exfoliation agent. The as-prepared LHPC showed high specific surface area and exhibited excellent electrochemical performances as an electrode material for supercapacitors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Rakhmawati Farma, Shiva Maulana Simanjuntak, Irma Apriyani
Summary: Chemical activation is a simple and cheap method that can improve the electrochemical properties of supercapacitor cell electrodes. The study utilized Salacca zalacca Shell to create a three-dimensional porous carbon framework, which exhibited good electrochemical performance. This provides a simple and feasible strategy for converting biomass waste into porous carbon material.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Chao Liu, Yi Hou, Youming Li, Huining Xiao
Summary: In this study, nitrogen and phosphorus dual-doped carbon microspheres were prepared using a facile and sustainable method. The microspheres exhibited a spherical structure with high specific surface area and pore volume, and showed superior electrochemical performance. Additionally, the microspheres were successfully applied as electrode materials in a supercapacitor, demonstrating excellent cycle stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Thermodynamics
Yunchao Li, Yangkai Sun, Hanming Li, Mengwei Sun, Jie Shen, Shurong Wang
Summary: In this study, a high-nitrogen-oxygen dual-doped three-dimensional hierarchical porous carbon network was prepared by one-step pyrolysis and in situ activation using Eriocheir sinensis as the precursor. The removal of inorganics and acid treatment enabled the formation of a unique 3D network structure with high doping concentration of nitrogen and oxygen. The resulting carbon materials exhibited excellent capacitive performance due to their interconnected 3D hierarchical porous structure and high heteroatom doping content.
Article
Materials Science, Multidisciplinary
Xiangchen Kong, Zhenguo Li, Yuankai Shao, Xiaoning Ren, Kaixiang Li, Hanming Wu, Congjie Lv, Cheng Lv, Shengli Zhu
Summary: Air contamination caused by ammonia slip has gained significant attention from researchers. Controlling fugitive ammonia is crucial for improving air quality. In this study, a CuOx/La2Ce2O7 composite catalyst was synthesized through electrostatic adsorption and showed excellent catalytic activity and ammonia conversion efficiency. The catalyst's performance improvement is attributed to the enhanced capturing ability of ammonia molecules and accelerated dissociation of N-H bonds. This work provides a facile method for synthesizing a pyrochlore-like composite catalyst for NH3-SCO, which can help solve the problem of ammonia slip pollution in the future.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ruiyang Chen, Xiaoyu Fang, Zhenguo Li, Zhiming Liu
Summary: In this study, a novel MnOx catalyst derived from MOF was fabricated and showed excellent activity and SO2 tolerance for the selective catalytic reduction of NOx by NH3 at low temperatures. The addition of MOF precursor and doping PVP improved the catalyst's surface area, particle size, and crystalline defects. The Mn-MP catalyst exhibited abundant acid sites, Mn4+, and surface chemical oxygen, which promoted the NH3-SCR reaction. In situ DRIFTs revealed that the high SO2 tolerance of the catalyst was attributed to the reduced irreversible sulfurization rate and the promoting adsorption of active bidentate nitrates and NH4+ in the presence of sulfates.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Energy & Fuels
Xuyang Zhang, Chonglin Song, Gang Lyu, Yunqiang Li, Yuehan Qiao, Zhenguo Li
Summary: The purpose of this study was to understand the physicochemical properties of gasoline direct injection (GDI) soot and determine a suitable surrogate for investigations on its oxidation. Various characterization methods were used to study the morphology, nanostructure, chemical composition, carbon chemical state, and oxidation reactivity of the soot. The GDI soot sample was collected from a gasoline particulate filter installed on a modern China VI passenger vehicle. The results showed that the GDI soot had near-spherical primary particles that formed aggregates. The physicochemical properties of the GDI soot were highly similar to those of Special Black 4 (SB4), suggesting that SB4 can be used as a good surrogate for studying the oxidation of GDI soot.
Article
Environmental Sciences
Boyang Qi, Zhenguo Li, Diming Lou, Yunhua Zhang
Summary: This study compared the effects of non-precious metal catalysts supported by Cs-V and conventional Pt-Pd-based catalysts on the performance of a non-road diesel engine equipped with a diesel particulate filter (DPF). The results showed that the Cs-V-based catalysts slightly reduced particulate emissions and met the non-road China IV limits, while also oxidizing CO, HC, and NO to some extent. In-wall coating of the DPF caused higher gaseous and particulate emissions, negatively affecting engine performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Yuxi Gao, Baofang Jin, Zhenyu Xi, Zhenguo Li, Xiaodong Wu, Rui Ran, Zhichun Si, Duan Weng
Summary: Silver-based catalysts are promising candidates for soot oxidation due to their good catalytic performance and low cost. However, an abnormal inhibition effect of silver nitrate was observed during the oxidation process, which may be due to its lower intrinsic reactivity. Furthermore, the formed silver nitrate is thermally stable.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Xu Dong, Qiuyu Tian, Yiren Lu, Xianhua Liu, Yindong Tong, Kaixiang Li, Zhenguo Li
Summary: This study reports on the controllable modulation of WO3 crystallization to synthesize a-WO3/c-WO3 hetero-nanoparticles, enhancing their photochromic response performance and demonstrating significant potential for application in smart windows.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Physical
Lingfeng Jia, Jixing Liu, Deqi Huang, Jingchen Zhao, Jianning Zhang, Kaixiang Li, Zhenguo Li, Wenshuai Zhu, Zhen Zhao, Jian Liu
Summary: A bifunctional core-shell Cu-SSZ-13@CZO catalyst was designed and fabricated, which showed enhanced resistance to sulfur and potassium ion poisoning compared to pristine Cu-SSZ-13. The Cu-SSZ-13 core was protected from poisoning by the CZO shell, resulting in improved catalytic activity for selective catalytic reduction of nitrogen oxides.
Article
Chemistry, Physical
Ju Gao, Xu Dong, Zhenguo Li, Yuankai Shao, Xiaoning Ren, Kaixiang Li, Yiren Lu
Summary: In this study, a GdMn2O5 mullite (GMO-H) catalyst with disordered surface Gd-deficient and oxygen-vacancy-rich concentrations was synthesized, which successfully lowered the reaction temperature for catalytic oxidation and improved the catalytic activity stability.
Review
Chemistry, Multidisciplinary
Pan Li, Ying Xin, Hanxue Zhang, Fuzhen Yang, Ahui Tang, Dongxu Han, Junxiu Jia, Jin Wang, Zhenguo Li, Zhaoliang Zhang
Summary: Nitrogen oxides (NOx), emitted by mobile sources, particularly diesel engines, are major gaseous pollutants that have negative impacts on human health and the environment. Selective catalytic reduction of NOx with NH3 (NH3-SCR) is proven to be an effective technique for reducing NOx emissions. Cu-SSZ-13 catalyst has been recognized as a promising candidate for reducing diesel engine NOx emissions due to its wide active temperature range and excellent hydrothermal stability. However, improving low-temperature activity and addressing hydrothermal aging remain challenges for Cu-SSZ-13 catalysts.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Shiyu Xu, Jiawei Chen, Zhenguo Li, Zhiming Liu
Summary: MnOx catalysts with 3D structure (Mn-HT) were prepared using KIT-6 as a template by the hard-template method, and their catalytic performance for the selective catalytic reduction of NOx by NH3 was investigated at low temperatures. It was found that the template KIT-6 prepared at different hydrothermal temperatures significantly affected the catalytic performance of Mn-HT catalysts. Among them, Mn-140 catalyst prepared using the template obtained at a hydrothermal temperature of 140 degrees C exhibited the highest catalytic performance. Characterizations showed that Mn-140 catalyst possessed high reducibility with abundant surface oxygen species and Mn4+ species. NH3-TPD and in situ DRIFTS demonstrated that there were more Lewis acid sites and Bronsted acid sites on the surface of Mn-140 catalyst, promoting the adsorption and activation of NH3 and efficiently reducing NOx mainly by the Eley-Rideal (E-R) mechanism, accompanied by the Langmuir-Hinshelwood (L-H) mechanism.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
Yonglong Li, Hunan Chen, Lei Chen, Yingying Zhang, Yangyang Mi, Meiyuan Liao, Wenming Liu, Daishe Wu, Zhenguo Li, Honggen Peng
Summary: This study designs a series of ternary metal oxide catalysts with outstanding denitration performance through a dual acid-redox sites tuning strategy and achieves efficient conversion of NOx and sulfur resistance over a wide temperature range.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Kunli Song, Shuqi Zhao, Zhenguo Li, Kaixiang Li, Yurong Xu, Yijun Zhang, Yonghong Cheng, Jian-Wen Shi
Summary: This study synthesized two catalysts, Cu-SSZ-13 and cerium-doped Cu-SSZ-13, and explored their tolerance to zinc and phosphorus poisoning. It was found that the presence of zinc and phosphorus together led to the formation of zinc phosphate particles on the surface of Cu-SSZ-13, protecting the active sites and enhancing the de-NOx performance. Additionally, the introduction of cerium stabilized the active sites, further improving the de-NOx performance and poisoning tolerance of Cu-SSZ-13.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Yuling Zheng, Yangyang Mi, Yonglong Li, Wenming Liu, Daishe Wu, Yingying Zhang, Zhenguo Li, Honggen Peng
Summary: In this study, a series of novel binary CuCo-SAPO-34 catalysts were designed and prepared through a simple one-pot method and applied for NOx selective catalytic reduction with ammonia. The binary CuCo-SAPO-34 catalysts exhibited enhanced activity and SO2 tolerance compared to Cu-SAPO-34, and also showed superior sulfur resistance and hydrothermal stability.
Article
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
Summary: Replacing fossil energy with renewable resources, such as fusel oil, is an effective way to reduce carbon emissions. By analyzing the characteristics of fusel alcohols and their interaction with diesel, the study found that adding 20% fusel oil with 6% water content can improve brake thermal efficiency by about 0.7%, reduce soot emission by up to 47.5%, and decrease NOx emissions by about 6.4%. The results suggest that fusel oil can be directly used in existing diesel engines without adversely affecting their performance.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yue Ma, Zhimin Shao, Xiaodong Wu, Yang Gao, Baofang Jin, Rui Ran, Zhichun Si, Zhenguo Li, Duan Weng
Summary: This study successfully improved the urea decomposition activity and reduced the deposition of solid by-products by combining Cu-SSZ-13 catalyst with TiO2 nanoparticles. The composited catalysts showed higher NOx conversion and lower urea-related deposits compared to unmodified Cu-SSZ-13 in a simulated urea deposition scenario. The superiority of the composited catalysts was maintained even under hydrothermal aging conditions at 800 degrees C.
REACTION CHEMISTRY & ENGINEERING
(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)
