Article
Energy & Fuels
Zhuangwei Xiao, Weimin Chen, Zhigao Chen, Chen Chen, Wenzhu Cao, Faquan Yu
Summary: A sandwich-like carbon/MoS2 composite with excellent structural stability and high conductivity is designed and fabricated as an anode material for sodium-ion batteries. The double-carbon encapsulation plays a key role in achieving good stability and high capacity, enabling the reversible conversion of MoS2 and facilitating rapid electron/ion transfer and electrochemical reaction kinetics.
Article
Materials Science, Multidisciplinary
Zhihao Gao, Rongyan Wen, Hua Deng, Lin Luo, Xiaochen Cui, Zhen Yang, Zongmin Zheng, Jianmin Zhang
Summary: In this study, the possibility of utilizing 2D nickel hydroxide nanosheets (NHNs) to prepare composite membranes was explored. The effect of NHNs on the properties of the membranes was investigated, and it was found that a low filler content led to improved thermal stability, crystallization behaviors, electrolyte affinity, and ionic conductivity. The composite membrane also demonstrated good cycling performance and rate capability in Li/LiFePO4 half-cells.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Physical
Ariono Verdianto, Hyojun Lim, Jungjoon Park, Sang-Ok Kim
Summary: In this study, sandwich-like heterostructured composites composed of multilayered MXene and SnSb nanocrystals were prepared via a simple wet-chemical precipitation method. The multilayered MXene with mechanical robustness and high electrical conductivity helped to accommodate the severe volume changes of SnSb nanocrystals, and provide a sufficient conductive network that facilitated electron and Na-ion transportation, and participate in electrochemical reactions through its capacitive behavior. The uniformly embedded SnSb nanocrystals in the interlayer of MXene prevented the re-stacking of the MXene multilayer upon cycling. The SnSb/MXene composite anode exhibited remarkable reversible capacity with dramatically improved Na-ion storage performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Guilong Liu, Yilin Wei, Tiantian Li, Yingying Gu, Donglei Guo, Naiteng Wu, Aimiao Qin, Xianming Liu
Summary: SiOx is a promising anode material for next generation Li-ion batteries, but faces challenges like mechanical damage, low conductivity, and toxic fabrication approaches. A green, inexpensive method was used to fabricate NG/SiOx/NG hybrids, improving conductivity and mechanical stress while modulating SiOx disproportionation and creating defects for ion storage, resulting in high specific capacity. The electrode showed high specific and areal capacities, and tolerable lithium storage performance, making it promising for LIBs.
Article
Chemistry, Physical
Pandeng Zhao, Shaqi Fu, Xue Wang, Zheng Jiao, Lingli Cheng
Summary: Complex hollow structure nanostructure, specifically the ZnS/NiS/NiS2 composite with a distinctive hierarchical hollow porous urchin-like structure, has shown excellent electrochemical performance as an anode material for lithium-ion batteries. The composite exhibits high porosity, large specific surface area, and a strong synergetic interaction between ZnS and NiS/NiS2, enabling efficient lithium-ion transfer and maintaining mechanical stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Min Fu, Han Kang, Dengqi Zhao, Hang Ren, Youzhou He, Jinwu Bai, Peng Lu, Xueli Hu, Yue Yang, Xue Kuang, Sanxiao Gao
Summary: A ZnSn(OH)6/SrSn(OH)6 perovskite-structured hydroxide heterojunction was synthesized and employed in the degradation of toluene under UV light. The optimal sample, 20% ZSH/SSH heterojunction, exhibited significantly higher toluene degradation rate compared to SrSn(OH)6 and ZnSn(OH)6. The reactive radicals center dot OH and center dot O2- generated in the SrSn(OH)6/ZnSn(OH)6 system played a key role in the degradation process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Thermodynamics
Zhibin Jiang, Ling Chen, Wenguang Zhang, Shiyu Chen, Xiying Jian, Xiang Liu, Hongyu Chen, Chunlei Guo, Weishan Li
Summary: A novel sulfur cathode composite has been reported in this study, which effectively immobilizes the LiPSs and greatly improves the cyclic stability and rate capability of Li-S battery. This composite shows promise for large-scale application due to its easy availability and environmental friendliness.
Article
Electrochemistry
Hao Zhang, Jiawen Peng, Junpeng Wang, Yuanyuan Ren, Wenjie Zeng, Liang Chen
Summary: A composite of fine-sized VS4 nanoparticles embedded in graphene sheets (VS4-G) with a sandwich-like structure was prepared using a one-pot hydrothermal route in this study. The VS4-G anode maintained a capacity of 667 mA h g(-1) after cycling 100 times at 0.1 A g(-1), and achieved highly stable long-term cycling properties at 1 A g(-1) due to the synergistic effect between the fine crystal size of VS4 and the intrinsic adequate electronic properties of graphene. The robust sandwich-like structure enabled a stable cycling performance of the VS4-G anode.
Article
Engineering, Environmental
A. Mantilla, J. E. Samaniego-Benitez, David Ramirez-Ortega, F. Tzompantzi, L. Lartundo-Rojas, H. A. Calderon, G. Romero-Ortiz
Summary: This study reports the synthesis and characterization of Sn-doped ZnAl hydrotalcite through the coprecipitation method and evaluates its performance in photocatalytic degradation of acetaminophen. The results show that the ZnAl/ZnSn(OH)6 composite exhibits better degradation efficiency under UV light. Additionally, by adjusting the ratio of ZnAl/ZnSn(OH)6 and the pH value of the solution, the photocatalytic efficiency can be further improved.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Dong Ding, Yuta Maeyoshi, Masaaki Kubota, Jungo Wakasugi, Koshin Takemoto, Kiyoshi Kanamura, Hidetoshi Abe
Summary: The study demonstrates a cost-effective synthesis approach of lithium-ion conducting glass ceramic/reduced graphene oxide composite, forming a sandwich-like structure that enhances the rate and cycle performances of the electrodes. The combination of LICGC and rGO provides ultrafast Li-ion and electron pathways, leading to improved rate capability and cyclability for the electrodes.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Tongyu Liu, Zijie Xu, Linlin Chen, Yali Zhang, Ming Wang, Yun Jia, Yaoguo Huang
Summary: In this study, sandwich-like V2O5/graphene composites were fabricated by controlling the graphene content. The addition of graphene not only enhanced the electrochemical stability and cycling life of the electrode, but also improved the charge transfer performance and suppressed vanadium dissolution.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Kun Shi, Zhengjie Xu, Dawei Zheng, Zeheng Yang, Weixin Zhang
Summary: In this study, a sandwich-like solid composite electrolyte separator was fabricated and used as a bifunctional separator for long life-span lithium metal batteries. The separator exhibited excellent flame retardancy and the ability to promote uniform lithium deposition, resulting in stable operation.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Zhaolin Li, Yaozong Yang, Jie Wang, Zhao Yang, Hailei Zhao
Summary: Silicon suboxide (SiOx) is a potential anode material for high-energy-density lithium ion batteries, but its electrochemical performance is hindered by mechanical instability due to volume variation. In this study, a sandwich-like structure is proposed, where SiOx nanoparticles are sandwiched between graphene sheets and amorphous carbon layer, improving the structural stability. The resulting C/SiOx@graphene material exhibits excellent cyclic performance and rate capability, offering a novel strategy to enhance the stability of high-capacity anode materials for lithium/sodium ion batteries.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Liyun Dang, Yilong Yang, Jiyong Hu, Shuaiguo Zhang, Yan Guo, Qiao Zhang, Yunyun Sun, Yuhuan Wu, Jinan Zhao
Summary: NC@SnO2@Fe2O3 nanorings were successfully designed through a simple method, with uniform distribution of all elements, improved conductivity and stability, and can be used for lithium ion batteries.
Article
Electrochemistry
Bo Sun, Hui Zhang, Wenge Chen, Ahmed Elmarakbi, Yong-Qing Fu
Summary: Co3O4 is a promising anode material for high-performance lithium-ion batteries due to its high specific capacity. However, its poor conductivity and volume expansion during electrochemical reactions limit its practical application. In this study, a novel sandwich-like Co3O4 nanostructure was synthesized by adjusting the ratio of ammonium fluoride and urea during hydrothermal reactions. The resulting composite electrode exhibited outstanding reversible capacity even at high current densities.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(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)