Article
Chemistry, Physical
U. A. Kamarulzaman, M. Y. A. Rahman, M. S. Su'ait, A. A. Umar
Summary: NiPd alloy-rGO prepared by LPD technique was studied as CE for DSSC, showing potential to replace Pt with comparable efficiency. Ni content and Ni:Pd ratio were found to significantly influence the device performance.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Inorganic & Nuclear
S. A. Salleh, M. Y. A. Rahman, T. H. T. Aziz
Summary: This study investigates the influence of thiourea concentration on the properties of nickel sulphide-reduced graphene oxide and its performance as a counter electrode in dye-sensitized solar cells. The findings show that the sample prepared with 1.20 M thiourea exhibits the highest power conversion efficiency, making it a potential substitute for platinum in DSSCs.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Lian Sun, Qian Zhang, Qijie Liang, Wenbo Li, Xiangguo Li, Shenghua Liu, Jing Shuai
Summary: This study developed a Pt-free counter electrode material, α-Fe2O3/RGO composite. Compared with pure α-Fe2O3 and RGO counter electrodes, α-Fe2O3/RGO composite has similar electrocatalytic performance to Pt counter electrode and significantly improves the power conversion efficiency of DSSCs.
Article
Materials Science, Multidisciplinary
Kirandeep Kaur, Meenakshi Patyal, Nidhi Gupta, Arun Kumar, Manika Khanuja
Summary: In this study, octaaza-bis-alpha-diimine ligand and its Yb complex grafted upon GO were synthesized and characterized. The composites with varying GO/Yb ratios were investigated as counter electrodes in dye sensitized solar cells. The device fabricated with the highest ratio (1:10) exhibited the highest values in terms of Voc, Jsc, and PCE, showing promising potential to replace traditional Pt counter electrodes.
Article
Energy & Fuels
M. A. K. L. Dissanayake, J. M. K. W. Kumari, G. K. R. Senadeera, Hafeez Anwar
Summary: The composite consisting of RGO, SnO2, and PANI was studied as a potential counter electrode material for DSSCs. Several optimizations were performed to obtain the optimum performance, resulting in higher efficiency and lower cost compared to conventional Pt counter electrodes.
Article
Chemistry, Multidisciplinary
Sakthi Velu Kuppu, Marimuthu Senthilkumaran, Venkatesan Sethuraman, Murugesan Balaji, Chokalingam Saravanan, Nafis Ahmed, Sonaimuthu Mohandoss, Yong Rok Lee, Jeyaraman Anandharaj, Thambusamy Stalin
Summary: In this study, a low-cost nanocomposite of PANI-rGO was used as the counter electrode (CE) in dye-sensitized solar cells (DSSCs) instead of the expensive platinum (Pt) CE. The nanocomposite CEs were prepared with different types of surfactants and characterized using various techniques. The PANI-rGO-anionic surfactant showed lower charge transfer resistance compared to other materials, resulting in a higher conversion efficiency of 7.60% in the DSSCs.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Analytical
Samar H. Bendary, Asmaa A. Abdelrahman
Summary: Due to their simplicity of manufacture, superior corrosion resistance, and low cost, carbon-based counter electrodes have gained unprecedented interest in dye-sensitized solar cells. However, issues such as poor surface adhesion and limited surface area of carbon counter electrodes have been a significant problem. To address these issues, researchers have used a hydrothermal technique to fabricate a novel carbon-based counter electrode. Through various tests, it has been found that the performance of this electrode is superior to traditional carbon-based electrodes.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Optics
U. A. Kamarulzaman, M. Y. A. Rahman, M. S. Su'ait, A. A. Umar
Summary: In this study, NickelPalladium-reduced graphene oxide (NiPd-rGO) films were prepared and used as free-platinum (Pt) counter electrode for dye-sensitized solar cell (DSSC) through liquid phase deposition technique. The influence of Pd content on the properties of the films was studied, including structure, optical transmission, surface morphology, and elemental compositions. The performance parameters of the device were significantly affected by the Pd content, with the device using NiPd-rGO counter electrode at Ni:Pd ratio of 20:2 demonstrating the highest efficiency of 3.09%.
Article
Energy & Fuels
Aycan Atli, Abdullah Yildiz
Summary: An opaque platinum film as a counter electrode in dye-sensitized solar cells demonstrates enhanced reflectivity, smaller resistance, and excellent adhesion properties. As a result, the DSSC with the opaque platinum film achieves a higher electrical power conversion efficiency compared to the transparent platinum film under the same conditions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Yuan Gao, Wei Liao, Wen Wang, Xueqin Zuo, Qun Yang, Huaibao Tang, Shaowei Jin, Guang Li
Summary: In this study, nanoparticles of CoFe2O4 and FeS2/FeCoS2 were prepared by direct oxidation and sulfurization of Fe-Co precursor for use as counter electrode materials in DSSCs. FeS2/FeCoS2@RGO exhibited superior electrical conductivity and catalytic activity, resulting in a higher power conversion efficiency compared to other nanoparticles and platinum. Integration of RGO improved the performance of FeS2/FeCoS2 by reducing agglomeration and enhancing the reaction rate of tri-iodide.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Inorganic & Nuclear
K. Paramasivaganesh, D. Sakthilatha, A. Sankar, P. Siva Karthik, Mohd. Shkir, F. Maiz, Woo Kyoung Kim, Sreedevi Gedi
Summary: This study reports the development of a nanohybrid based on CeNi2S4 nanotubes embedded on reduced graphene oxide (RGO) sheets as a potential replacement for Pt in dye sensitized solar cells (DSSCs). The optimized CeNi2S4/RGO nanohybrid counter electrode showed high photo conversion efficiency, attributed to its hierarchical structure providing fast ion diffusion pathways, large accessible surface area, and good chemical and thermal stability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
C. Tamilselvi, P. Duraisamy, N. Subathra
Summary: The NiSe2/graphene hybrid material, in which NiSe2 nanocrystals are uniformly anchored on graphene nanosheets, exhibits remarkable catalytic activity in dye-sensitized solar cells. It shows higher power conversion efficiency and has the potential to replace Pt in such cells.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Ha Thanh Tung, Ho Kim Dan, Deepu Thomas, H. K. Jun, Le Thi Ngoc Tu
Summary: This research aims to improve the efficiency of quantum dot-sensitized solar cells by using a reduced graphene oxide-Cu2S counter electrode. The study shows that an electrode with 18 mg of graphene oxide exhibits the best electrochemistry and results in the highest performance for the solar cells.
Article
Chemistry, Multidisciplinary
Dui Ma, Xiang Ma, Meilan Xie, Xuejiao Liu, Jiantao Zai, Xuefeng Qian, Xiaofeng Wang, Jiyang Zhao, Zhaorui Pan, Xiao Liang, Yuchi Zhang
Summary: Developing a cost-saving, high-efficiency, and simple synthesis of counter electrode (CE) material to replace pricy Pt for dye-sensitized solar cells (DSSCs) has become a research hotspot. The strategy to controllably synthesize the same element in several phase heterostructures used as the CE in DSSCs is still absent.
Article
Chemistry, Physical
Drajad Satrio Utomo, Jae Ho Kim, Daseul Lee, Juyun Park, Yong-Cheol Kang, Yong Hyun Kim, Jin Woo Choi, Myungkwan Song
Summary: A novel hierarchical MoO3 catalyst was fabricated and used as the counter electrode in dye-sensitized solar cells. The catalyst showed enhanced efficiency and stability, leading to a significant improvement in power conversion efficiency compared to the reference device.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Review
Energy & Fuels
Minmin Yang, Jihuai Wu, Zhang Lan, Jianming Lin, Miaoliang Huang, Leqing Fan
Summary: Reviewing the literature on tandem solar cell (TSC) research from 2000 to 2019, identifying the top 10 research hotspots and clusters, and revealing the development orientation of TSC research. The study indicates that organic solar cells are the mainstream of TSC research, while perovskite solar cells are a typical emerging trend.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Ruoshui Li, Yu Jing, Xiao Liu, Yuan Xu, Deng Wang, Wenjing Li, Weizhi Hou, Jihuai Wu, Zhang Lan
Summary: This paper introduces a method to enhance the stability of organometal halide perovskite solar cells (PSCs) using UV-curing. By adding a suitable amount of UV-gel in the perovskite precursor solution and hole transport material solution, the crystallization of perovskite can be promoted, moisture diffusion in the hole transport layer can be reduced, and the degradation of PSCs can be avoided.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Fengxian Cao, Huiwen Chen, Shibo Wang, Pengxu Chen, Chenwei Zhu, Zhang Lan, Weihai Sun, Yunlong Li, Jihuai Wu
Summary: By in-situ forming two-dimensional perovskites on the surface of three-dimensional perovskite films through a self-assembly method, along with the deposition of hole transporting material simultaneously, the fabrication process of PSCs is greatly simplified. This approach reduces trap states in devices and enhances the performance of the solar cells, leading to an increase in average power conversion efficiency by 10% and maintaining more than 82% of initial PCE after 672 hours of exposure under full 1-sun simulation.
MATERIALS TODAY PHYSICS
(2022)
Article
Chemistry, Physical
Wenjing Li, Ruoshui Li, Deng Wang, Guodong Li, Weichun Pan, Shibo Wang, Weihai Sun, Jihuai Wu, Zhang Lan
Summary: Research has found that using rutile TiO2 nanoparticles with an average size of 2.1 nm as part of the electron transport layer can improve the performance of perovskite solar cells, especially in suppressing hysteresis effects. Experimental results show that this approach can achieve higher power conversion efficiency, providing insights for the application of perovskite solar cells.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Mian Gao, Zhitao Shen, Gentian Yue, Chen Dong, Jihuai Wu, Yueyue Gao, Furui Tan
Summary: In this study, a novel synthesis method was developed to prepare efficient and economical non noble metal counter electrode (CE) electrocatalytic materials with good catalytic ability and stability for dye-sensitized solar cells (DSSCs). The resulting micro-nanostructured composite of CE showed high power conversion efficiency and a distinctive porous structure that facilitated fast charge transport.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Jingxu Tian, Jihuai Wu, Yuhe Lin, Jialian Geng, Jialiang Shi, Wenhui Lin, Wenxuan Hao, Chaoran Ke, Jinhui Yang, Weihai Sun, Zhang Lan
Summary: As a solution to the challenges of improving efficiency and stability in perovskite solar cells (PSCs), a cage polyamine molecule hexamethylenetramine (HMTA) is incorporated into the tin oxide electron transport layer (ETL). The introduction of HMTA improves electron extraction ability and energy-level alignment of functional layers. It also reduces defects and enhances stability, resulting in a PSC with a high power conversion efficiency of 22.37%. This research demonstrates the use of cage polyamines as an effective method for improving the performance and stability of PSCs.
Article
Chemistry, Physical
Chunyan Deng, Jihuai Wu, Yuqian Yang, Yitian Du, Ruoshui Li, Qi Chen, Yuan Xu, Weihai Sun, Zhang Lan, Peng Gao
Summary: By functionalizing the buried interface using DDSI2, the distribution and size of PbI2 clusters can be modulated, leading to improved performance of perovskite films. DDSI2 serves as a multifunctional modifier that optimizes the energy level of SnO2 and passivates buried interface defects. The hydrogen bonding and coordination between DDSI2 and perovskite reduce crystal growth rate and lattice stress, resulting in enhanced perovskite quality and modulated PbI2 distribution. The DDSI2-modified device exhibits a power conversion efficiency of 24.10% and a storage stability of 1800 h, demonstrating a unique strategy for the rational control of PbI2 in efficient and stable perovskite solar cells.
ACS ENERGY LETTERS
(2023)
Review
Materials Science, Multidisciplinary
Zeyu Song, Zhongkai Hao, Xu Zhang, Jihuai Wu
Summary: In recent years, there has been an increase in the development and research of photocapacitors. They have the potential to address the intermittent output problem of solar cells but their efficiency is much lower than that of photovoltaic devices, limiting their usability. As an intersection of photovoltaic devices and supercapacitors, the development of photocapacitors is still in its early stages and faces numerous challenges. This review provides an introduction to the classification of photocapacitors, outlines the development process, and points out the problems that need to be solved.
FUNCTIONAL MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Anling Tong, Chenwei Zhu, Huiying Yan, Chunhong Zhang, Yinuo Jin, Yunjia Wu, Fengxian Cao, Jihuai Wu, Weihai Sun
Summary: Inorganic CsPbBr3-based perovskite solar cells have excellent humidity and thermal stability, but those without a hole transport layer suffer from serious carrier recombination. To solve this problem, a passivation layer of polymethyl methacrylate (PMMA) is used between the CsPbBr3 film and carbon electrode. This PMMA layer suppresses trap sites, facilitates faster carrier extraction and transportation, improves energy level alignment, and acts as a moisture protective layer. The modified device achieved a champion PCE of 9.60% with a high VOC of 1.58 V, and negligible PCE loss after 400 hours of aging.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Yitian Du, Ying Wang, Jihuai Wu, Qi Chen, Chunyan Deng, Ran Ji, Liuxue Sun, Lina Tan, Xia Chen, Yiming Xie, Yunfang Huang, Yana Vaynzof, Peng Gao, Weihai Sun, Zhang Lan
Summary: Sodium bicarbonate is used as an additive in perovskite solar cells to improve the formation of perovskite film and enhance the crystallinity and grain structure, resulting in improved device efficiency and stability.
Article
Nanoscience & Nanotechnology
Wenhui Lin, Jihuai Wu, Jingxu Tian, Yuhe Lin, Puzhao Yang, Yongheng Huang, Xiaoyuan Jiang, Lin Gao, Ying Wang, Weihai Sun, Zhang Lan, Miaoliang Huang
Summary: The introduction of multifunctional additive TFMBI into perovskite films effectively repairs surface defects, improves the performance of perovskite solar cells, and enhances their environmental stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Pengxu Chen, Weichun Pan, Sijia Zhu, Fengxian Cao, Anling Tong, Ruowei He, Zhang Lan, Weihai Sun, Jihuai Wu
Summary: In this study, defects in the SnO2 electron transport layer and perovskite layer were effectively passivated by introducing a multifunctional molecule TMACl. The presence of TMACl suppressed the defects in SnO2 and passivated the defects in PVK, resulting in improved device performance of perovskite solar cells. The devices based on TMACl-doped SnO2 and TMACl-modified SnO2 electron transport layers achieved higher efficiencies compared to the pristine device, and the TMACl-modified SnO2 maintained 88% of its original efficiency after 35 days of storage in a humidity-controlled chamber.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Weichun Pan, Pengxu Chen, Sijia Zhu, Ruowei He, Qingshui Zheng, Fengxian Cao, Zhang Lan, Jihuai Wu, Weihai Sun, Yunlong Li
Summary: The introduction of 6-amino-1-hexanol (HAL) with bilateral electron-donating groups between SnO2 and perovskite (PVK) optimizes the buried interfacial properties and improves the PVK film quality in perovskite solar cells. HAL acts as a molecular bridge to effectively passivate surface defects of SnO2 and stabilize the [PbI6](4)- octahedra at the buried interface. The HAL-modified device exhibits significantly enhanced photovoltaic performance and improved stability after storage.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Jinbiao Jia, Beibei Shi, Jia Dong, Zhe Jiang, Shuaibing Guo, Jihuai Wu, Bingqiang Cao
Summary: By introducing 4-iodo-1H-imidazole into the perovskite precursor, defects in the perovskite films can be prevented, resulting in a significant increase in open-circuit voltage and decreased nonradiative recombination. As a result, the device efficiency is increased by 20% compared to the control device.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yuqian Yang, Qiu Xiong, Jihuai Wu, Yongguang Tu, Tianxiao Sun, Guixiang Li, Xuping Liu, Xiaobing Wang, Yitian Du, Chunyan Deng, Lina Tan, Yuelin Wei, Yu Lin, Yunfang Huang, Miaoliang Huang, Weihai Sun, Leqing Fan, Yiming Xie, Jianming Lin, Zhang Lan, Valerio Stacchinii, Artem Musiienko, Qin Hu, Peng Gao, Antonio Abate, Mohammad Khaja Nazeeruddin
Summary: This study introduces a novel strategy of spinodal decomposition to create a poly(3-hexylthiophene)/perovskite (P3HT/PVK) heterointerface, effectively reducing energy and carrier losses in perovskite solar cells (PSCs). The P3HT/PVK heterointerface improves energy alignment, reducing energy loss at the interface, and the interpenetrating structure bridges a transport channel, decreasing carrier loss at the interface. This innovative approach achieves a remarkable power conversion efficiency of 24.53% for PSCs.
ADVANCED MATERIALS
(2023)
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)