Article
Chemistry, Multidisciplinary
Ping Li, Wenqin Li, Yuqi Huang, Quhua Huang, Jixin Li, Shien Zhao, Shuanghong Tian
Summary: In this study, it is found that a synergistic anomalous hcp phase and heteroatom doping engineering over metallic Ni enhance the urea oxidation reaction (UOR). A metal-organic framework-mediated approach is proposed to construct Ni nanoparticles (NPs) with designated crystal phase embedded in N-doped carbon (fcc-Ni/NC and hcp-Ni/NC). The hcp-Ni/NC with unusual hcp phase outperforms fcc-Ni/NC with conventional fcc phase, and incorporating foreign Mn species further enhances UOR activity. These findings highlight the importance of crystal phase and doping engineering in designing advanced catalysts.
Review
Materials Science, Ceramics
Xing Guo, Xungang Diao, Wei Wang
Summary: This study prepared NiO films with large specific surface area and high stability using electron beam evaporation, and investigated their surface morphology, composition, electrochemical properties, and optical performance. The results confirm that both surface reaction and capacitive effect contribute to the excellent electrochromic performance of NiO films.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Gyeongbin Ko, Seongdeock Jeong, Sanghyuk Park, Jimin Lee, Seoa Kim, Youngjun Shin, Wooseok Kim, Kyungjung Kwon
Summary: Lithium-ion batteries (LIBs) are crucial for the electric vehicle (EV) industry, and LiNi1-x-yCoxMnyO2 (NCM) is the dominant cathode material used in EV LIBs. Due to the need for increased driving range, Ni content in NCM is maximized, but the resulting Ni-rich NCM is unstable. Doping with foreign elements has been explored as a strategy to overcome this instability, with over 46 elements considered and their effects on LIB performance investigated in numerous research articles. This comprehensive analysis of various doping elements and their impact on LIB performance provides valuable insights for the LIB industry and academia.
ENERGY STORAGE MATERIALS
(2023)
Review
Energy & Fuels
Suhas H. Sutar, Bapuso M. Babar, Komal B. Pisal, Akbar I. Inamdar, Sarfraj H. Mujawar
Summary: Smart and multifunctional devices are gaining interest in the scientific community as technological advancements increase. Supercapacitors, with their high energy and power density capabilities, can bridge the gap between batteries and fuel cells. This article discusses the potential and performance of NiO-based electrochromic technology in various applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Inorganic & Nuclear
Nathan Davison, Tanima Khatun, Isabel Arce-Garcia, Jamie A. Gould, James A. Dawson, Erli Lu
Summary: Transition-metal oxides (MOx) are crucial in various fields, but their reduction and doping processes usually require high energy and harsh conditions. This study introduces a new method utilizing mechanochemical ball milling and lithium metal, which enables MOx reduction and doping at room temperature within 20 minutes.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Zhipeng Chen, Guang Yu, Bin Li, Xinxin Zhang, Mingyang Jiao, Nailiang Wang, Xiangping Zhang, Licheng Liu
Summary: The nickel-doped indium oxide nanocrystals confined in carbon nanofibers demonstrate high efficiency and stability in the electroreduction of CO2 to formate, attributed to changes in electronic structure enhancing adsorption strength and charge transfer rate of intermediates.
Article
Chemistry, Multidisciplinary
Ruijun Pan, Eunmi Jo, Zehao Cui, Arumugam Manthiram
Summary: Electrode-electrolyte reactivity (EER) is found to have a greater impact on the cycling stability of LiNiO2 cathodes than particle cracking (PC) in lithium-based batteries. EER leads to primary particle cracking but mitigates secondary particle cracking due to the inhibition of H2-H3 phase transformation. The surface degradation pathways of cycled LiNiO2 are identified under low and high EER conditions, revealing the formation of an electrochemically-inactive SRL with Ni3O4 and NiO phases under high EER and an electrochemically-active SRL with LiNi2O4 phase under low EER.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Seamus Ober, Alex Mesnier, Arumugam Manthiram
Summary: This study demonstrates that incorporating a small amount of niobium effectively suppresses the structural and surface degradation of lithium nickel oxide, resulting in higher capacity retention during cycling. The niobium treatment forms a surface coating of LixNbOy phase, reducing active material loss over long-term cycling and improving lithium-ion diffusion kinetics. The enhanced structural integrity and electrochemical performance of the niobium-treated lithium nickel oxide are due to the reduction in the formation of nanopore defects during cycling compared to untreated lithium nickel oxide.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Wang Jinmin, Hou Lijun, Ma Dongyun
Summary: Electrochromic materials have reversible color-changeable characteristics and are widely used in smart windows, displays, and other fields. Molybdenum oxide, as a typical cathodic colored electrochromic material, has advantages of short response time and colored state closer to the human eye's sensitive wavelength band.
JOURNAL OF INORGANIC MATERIALS
(2021)
Review
Chemistry, Physical
Lu Nie, Shaojie Chen, Wei Liu
Summary: This article introduces the importance of high-voltage cathode materials in lithium-ion batteries and their relationship with lattice structure and electrochemical properties. It also discusses the degradation mechanisms and corresponding modification strategies, highlighting recent progress and strategies such as element doping, surface coating, morphology design, and size control. Finally, a concise perspective for future developments and practical applications of lithium-rich layered oxides has been provided.
Review
Energy & Fuels
Junkai Wang, Xiangtao Huo, Min Guo, Mei Zhang
Summary: With the rapid development of economy, developing new kinds of materials with dual or multi functions may be the key to resolving the energy crisis and environmental pollution. Nickel oxide (NiO) has been proved to be a promising material for integrated devices such as electrochromic capacitors and/or energy storage smart windows. However, there are still great challenges in engineering between energy storage and electrochromic devices.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Electrochemistry
Soren L. Dreyer, Philipp Kurzhals, Svenja B. Seiffert, Philipp Mueller, Aleksandr Kondrakov, Torsten Brezesinski, Juergen Janek
Summary: The pursuit of higher energy density in lithium-ion batteries has led to an increase in the nickel content in lithium nickel cobalt manganese oxide cathode active materials (CAMs) towards LiNiO2 (LNO). However, the higher specific capacity of LNO leads to more severe degradation during battery operation. The introduction of dopants to increase structural stability is a commonly used approach, but little attention has been given to the role of the process route of their introduction. In this study, we show that the effects on various physico- and electrochemical properties are not solely due to the dopant itself, but also the process route and resulting particle morphology, using a series of nominally equally Zr-doped LNO samples.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Editorial Material
Chemistry, Multidisciplinary
Caixia Yang, Zhiqiang Wang, Zhendong Li, Yichen Pan, Linwei Jiang, Caicai Li, Chao Wang, Qingfeng Sun
Summary: In this study, a self-supported N-doped Ni2P catalyst was successfully designed and fabricated, demonstrating excellent electrocatalytic performance in alkaline medium. The results reveal the atomic-level modulation of Ni2P electronic structure by N-doping and provide new insights for the development of transition metal phosphide-based catalysts.
Article
Chemistry, Multidisciplinary
Caixia Yang, Zhiqiang Wang, Zhendong Li, Yichen Pan, Linwei Jiang, Caicai Li, Chao Wang, Qingfeng Sun
Summary: In this study, a self-supported N-doped nickel phosphide catalyst was fabricated and showed excellent electrocatalytic performance in alkaline medium. The incorporation of nitrogen enhanced the catalytic property of nickel phosphide and optimized the Gibbs free energy of reaction intermediates.
Article
Engineering, Electrical & Electronic
Xin Shen, Meiqi Yang, Chengxing He, Tianshuo Zhao, Devan Solanki, Rito Yanagi, Ben Gibbs, Gouri Krishnan, Shu Hu
Summary: This study fills the gaps in the current research on EC materials by employing atomic layer deposition (ALD) to grow a (Ti,Cr)Ox film as a new subset of EC coatings that operates in direct contact with aqueous solutions. The protective and bipolar coloration properties of the (Ti,Cr)Ox are achieved by the ALD alloying of TiO2 and CrOx nanocrystals. The results show that this ALD-grown ternary EC coating can also act as a surface protection layer and has unique advantages over other EC materials to achieve balanced performance among color tunability, coloration efficiency, and cycle stability.
ACS APPLIED ELECTRONIC 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)