Article
Energy & Fuels
Weiwei Zhu, Dekui Shen, Haijiao Xie
Summary: Nitrogen-doped hierarchical porous carbon (N-HPC) was prepared from houttuynia cordata through chemical activation and nitrogen-doping. The etching behavior of the activator was enhanced by nitrogen doping, promoting the proportion of pyridinic and pyrrolic nitrogen. The prepared N-HPC exhibited a high specific surface area and nitrogen atoms mainly existed in the form of pyridinic and pyrrolic nitrogen. The N-HPC electrode showed a high specific capacitance and good rate characteristic, and the assembled symmetric supercapacitors achieved a high energy density. This work reveals the interaction between nitrogen-doping process and etching behavior, providing a novel route for biomass-based carbon material synthesis for supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Yang Cao, Kuihua Han, Zhaocai Teng, Jinxiao Li, Tongtong Ji, Xian Li, Jigang Zhang
Summary: This study proposes a strategy of synergistic activation and nitrogen-doping to synthesize nitrogen-doped porous carbon materials, and optimizes the experimental conditions to prepare a product with high specific surface area and excellent capacitance performance. The balanced nitrogen proportion was found to play a key role in enhancing the material properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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
Agricultural Engineering
Dan Xu, Mingpan Wan, Yumei Yang, Bixiang Pan, Qianlin Chen
Summary: A mesopore-dominated hierarchical porous carbon material was prepared using a unique mixture and pyrolysis method, showing high performance in supercapacitors with excellent capacitance retention and energy density.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Engineering, Environmental
Ahmad Amiri, Kian Bashandeh, M. Naraghi, Andreas A. Polycarpou
Summary: The study developed an efficient all-solid-state structural supercapacitor with high energy storage and load-bearing capabilities, showing remarkable electrochemical and mechanical properties. By combining pseudocapacitance and double layer mechanisms, the device is able to store energy and bear load effectively, outperforming other structural electrode materials.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Wojciech Kicinski, Slawomir Dyjak
Summary: Nitrogen-doped and heteroatom multi-doped carbon materials are considered excellent catalysts and sorbents. Acid-catalyzed sol-gel polycondensation of hydroxybenzenes with heterocyclic aldehydes yields porous organic polymers, which upon pyrolysis result in highly porous and heteroatom-doped carbons. The study investigates the influence of reactants composition and pyrolysis temperature on the structure and chemical composition of the final doped materials.
Article
Chemistry, Multidisciplinary
Lok Kumar Shrestha, Rekha Goswami Shrestha, Rashma Chaudhary, Raja Ram Pradhananga, Birendra Man Tamrakar, Timila Shrestha, Subrata Maji, Ram Lal Shrestha, Katsuhiko Ariga
Summary: Nitrogen-doped activated carbon materials prepared by potassium hydroxide activation of Lotus seed show excellent electrochemical supercapacitance performance, high specific capacitance, and excellent rate capability. These materials have potential as high-performance electrodes for supercapacitor applications.
Article
Chemistry, Applied
Ziyuan Pei, Jianping Zhou, Xiufeng Xu, Jinman Liu, Hongjian Wang, Yulin Li, Qi Chen, Zhuyin Sui
Summary: In this study, nitrogen-doped porous carbon materials were successfully prepared using a simple carbonization process and steam activation, with pyrrole-formaldehyde polymer microspheres as precursors. The resulting nitrogen-doped carbon microspheres exhibited a high surface area and a hierarchical pore structure, and maintained excellent capacitance performance at high current densities. The electrode also demonstrated good adsorption capacity in saline solution, highlighting its potential for supercapacitor and desalination applications.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Energy & Fuels
Hui Wang, Yiwei Liu, Lirong Kong, Zhongyun Xu, Xiaoping Shen, Subramanian Premlatha
Summary: Porous graphitic carbon nitride layers (UMCN-A1.25) with a typical three-dimensional network structure were prepared by a simple calcination process. NH4HCO3 was used as a pore generator and glucose was used as the carbon precursor, while urea and melamine functioned as binary precursors for the sacrificial template. The hierarchical pore structure and high nitrogen-doping level contribute to the high specific capacitances and stable charge-discharge behavior of UMCN-A1.25.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Sandya Rani Mangishetti, M. Kamaraj, Ramaprabhu Sundara
Summary: A strategy for preparing electrode materials with high conductivity, high surface area, and hierarchical pore structure, along with nitrogen functional groups, to enhance the electrochemical performance of electrochemical capacitors is presented. The materials consist of partially unravelled carbon nanotubes interconnected to wrinkled few layered graphene nanosheets, serving as quick ion and charge transportation channels. The addition of nitrogen-doped porous carbon further improves the electrochemical performance, with enhanced pseudocapacitance and overall supercapacitive performance. The developed electrode material shows high specific capacitance and energy density, making it a promising candidate for supercapacitor applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Tadepalli Mitravinda, Srinivasan Anandan, Chandra Shekhar Sharma, Tata Narasinga Rao
Summary: The nitrogen-doped nanoporous activated carbon synthesized from cork using three different stoichiometric ratios of cork carbon to melamine shows highly ordered graphitic carbon with few layered graphene-like structure. The resulting material with nitrogen content delivers high capacitance and outstanding rate capability for supercapacitor application, attributed to its unique honeycomb structure and superior textural parameters.
JOURNAL OF ENERGY STORAGE
(2021)
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, Multidisciplinary
Mingtao Ding, Ziwen Ma, Hao Su, Ye Li, Kuo Yang, Lianfa Dang, Fangfei Li, Bing Xue
Summary: In this study, an economical porous biochar was prepared from an apricot shell and used as an electrode material for a supercapacitor, exhibiting excellent electrochemical properties. The research findings highlight the significant influence of KOH concentration on the morphology and performance of the biochar material.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Song Lv, Liya Ma, Xinyu Shen, Hua Tong
Summary: In order to achieve high-performance supercapacitors, nitrogen and sulfur co-doped porous chitosan hydrogel-derived carbons are prepared through one-step carbonization. The incorporation of potassium citrate as a pore-former and thiourea as binary doping of nitrogen and sulfur effectively enhances the capacitance of the carbon materials.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Xiaodong Hu, Kelei Zhuo, Dong Sun, Quanzhou Du, Li Sun, Yujuan Chen, Guangyue Bai, Jianji Wang
Summary: Reasonable design of electrode materials to match ionic liquid electrolytes is crucial for the development of high-performance supercapacitors. In this study, a nitrogen-doped agar-derived porous carbon (NAGC) electrode material was prepared using agar as precursor, potassium carbonate as activator, and melamine as nitrogen source. The NAGC electrode showed high specific capacitance and long cycling life in an ionic liquid electrolyte, making it a promising material for future supercapacitor applications.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Jingui Jiang, Hao Chen, Zhao Wang, Luke Bao, Yiwei Qiang, Shiyou Guan, Jianding Chen
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2015)
Article
Polymer Science
Haonan Wang, Yiwei Qiang, Ahmad Arabi Shamsabadi, Prantik Mazumder, Kevin T. Turner, Daeyeon Lee, Zahra Fakhraai
Article
Chemistry, Multidisciplinary
Baekmin Q. Kim, Yiwei Qiang, Kevin T. Turner, Siyoung Q. Choi, Daeyeon Lee
Summary: A new technique has been developed to fabricate heterostructured PINFs with cavities based on capillary rise infiltration (CaRI), enabling the production of double stack PINFs with large cavities at moderate temperatures. Using these heterostructured PINFs, Bragg reflectors capable of detecting wetting agents in water have been successfully fabricated.
ADVANCED MATERIALS INTERFACES
(2021)
Review
Chemistry, Applied
R. Bharath Venkatesh, Neha Manohar, Yiwei Qiang, Haonan Wang, Hong Huy Tran, Baekmin Q. Kim, Anastasia Neuman, Tian Ren, Zahra Fakhraai, Robert A. Riggleman, Kathleen J. Stebe, Kevin Turner, Daeyeon Lee
Summary: Polymer-infiltrated nanoparticle films (PINFs) exhibit superior properties through capillary rise infiltration (CaRI) and solvent-driven infiltration of polymer (SIP), including excellent mechanical properties, thermal stability, heat transfer, and optical properties. This new class of nanocomposites has potential applications in separations, structural coatings, and polymer upcycling.
ANNUAL REVIEW OF CHEMICAL AND BIOMOLECULAR ENGINEERING, VOL 12, 2021
(2021)
Article
Chemistry, Multidisciplinary
Yiwei Qiang, Sumukh S. Pande, Daeyeon Lee, Kevin T. Turner
Summary: Polymer-nanoparticle composite films with high loadings of nanoparticles have various applications. The confinement of polymers due to the high-volume fraction and small size of the nanoparticles can significantly change the properties of polymers. By tuning the extent of confinement and using nanoparticles of different sizes, the fracture toughness of the composite films can be enhanced. Low molecular weight polymers can greatly increase the toughness of nanoparticle packings, while high molecular weight polymers are more effective in toughening large nanoparticle packings.
Article
Polymer Science
Yiwei Qiang, Kevin T. Turner, Daeyeon Lee
Summary: Polymer-nanoparticle composite films (PNCFs) with high nanoparticle loadings have excellent properties. Polymer-infiltrated NP films (PINFs) are a new type of highly loaded PNCFs used as coatings and membranes, providing a platform to study the effects of interfacial and confinement on polymer properties. This study investigates how the polymer-nanoparticle interface affects the fracture behavior of PINFs prepared by infiltrating polymer into silica nanoparticle packings. The results show that the fracture toughness of PINFs composed of small nanoparticles is influenced by the polymer-nanoparticle interface, while for PINFs consisting of large nanoparticles, the fracture toughness is more influenced by the properties of the polymers.
Article
Chemistry, Multidisciplinary
Yiwei Qiang, Kevin T. Turner, Daeyeon Lee
Summary: Alignment of highly anisotropic nanomaterials in a polymer matrix can yield nanocomposites with unique properties. A scalable approach to fabricate polymer-infiltrated nanoplatelet films is presented in this work, showing enhanced mechanical properties compared to conventional methods. The films with high aspect ratio nanoplatelets exhibit significantly higher fracture toughness, modulus, hardness, and scratch resistance, benefiting from thermally promoted oxide bridge formation and enhanced strength of nanoplatelet contacts through polymer infiltration.
Article
Chemistry, Multidisciplinary
Yiwei Qiang, Jingui Jiang, Yachao Xiong, Hao Chen, Jiayun Chen, Shiyou Guan, Jianding Chen
Article
Chemistry, Physical
Yiwei Qiang, Neha Manohar, Kathleen J. Stebe, Daeyeon Lee
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2018)
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)
