Article
Chemistry, Physical
Yuxuan Zhang, Han Wook Song, Kyle R. Crompton, Xixian Yang, Kejie Zhao, Sunghwan Lee
Summary: Lithium-sulfur (Li-S) batteries offer high-density and low-cost energy storage, but the transport of polysulfides hinders their practical utilization. To overcome this limitation, a novel strategy using oxidative chemical vapor deposition (oCVD) is proposed to limit the shuttling of polysulfides in the cathode. The gas-phase approach involves a conducting and conformal polymer coating that eliminates traditional binders, enhances sulfur conversion kinetics, and inhibits polysulfide shuttling. Experimental and theoretical investigations demonstrate the physical and chemical confinement of polysulfides in the cathode, resulting in high capacity retention and specific energy, proving the potential for practical applications.
Article
Chemistry, Physical
Zhenpu Shi, Kexin Zhang, Kai Xiao, Xingxing Xing, Huifang Xu, Lan Wang, Hongyun Yue, Yanhong Yin, Shuting Yang
Summary: Phthalocyanine catalysts show excellent performance in Li-S batteries, improving electrochemical performance and lowering energy barriers.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Electrochemistry
Kookhan Kim, Chunjoong Kim, Jungjin Park, Yung-Eun Sung
Summary: The time-dependent deterioration of electrochemical performance in lithium-sulfur (Li-S) cells has been thoroughly reevaluated in this study. It was found that the degradation in capacity and rate performance is significantly influenced by the irreversible chemical reaction between the sulfur cathode and Li anode with polysulfide intermediates. A new data plot, capacity vs test time, is proposed to better understand the relationship between rate performance and cycle retention, excluding the self-discharge effect.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Meng Ma, Liyun Cao, Kai Yao, Jiayin Li, Koji Kajiyoshi, Jianfeng Huang
Summary: Using hollow urchin-like FeP as a sulfur host can effectively suppress the shuttle effect, exhibit catalytic ability to Li-S, and enhance the cycling stability and kinetics of lithium-sulfur batteries.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Zephyr Barlow, Zhen Wei, Ruigang Wang
Summary: This study modified the surface structure of titanium dioxide (TiO2) to create nanotubes, which were then chemically reduced to introduce oxygen vacancy defects. The nanotubes exhibited high surface area, polar nature, and conductivity, effectively trapping lithium polysulfides and improving their redox kinetics. Galvanostatic charge-discharge cycling testing showed that ball milled nanotubes and chemically reduced nanotubes performed the best among the tested cathode hosts.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Chemical
Miaomiao Tian, Jing Zhao, Hongmei Liu, Yan Li, Zhengwei Wan, Zeheng Li, Gu Wu, Kun Wang, Tiangui Zhou, Yuanzhong Tan, Yang Hou, Wenbin Ni, Min Ling, Chengdu Liang
Summary: In this study, MoP@NC/S cathode with multiple synergistic mechanisms was constructed, solving the key problems in Li-S battery and improving its performance. MoP@NC/S cathode exhibited a surprising discharge capacity at 0.1 C and demonstrated stability in long cycle life testing.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Jingkun Tian, Fei Xing, Qiqian Gao
Summary: The global energy crisis and environmental problems are escalating, highlighting the urgent need for efficient energy storage systems. Lithium-sulfur batteries are a promising option due to their high energy density but face challenges like dissolution and diffusion issues. Graphene, a material with excellent properties, is being explored for surface modification of sulfur cathodes.
Article
Engineering, Environmental
Pengfei Sang, Jiahan Song, Wei Guo, Yongzhu Fu
Summary: Organosulfur polymers are a unique class of cathode materials for rechargeable lithium batteries, synthesized through specific condensation reactions with high theoretical specific capacity and excellent cycling performance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Yu Wang, Dongsheng Ren, Xuning Feng, Li Wang, Minggao Ouyang
Summary: The study found that thermal stability of NCM cathode materials is influenced by nickel content and particle structure, with higher nickel content and polycrystal structure showing worse thermal stability. Increasing nickel content leads to a decrease in thermal reaction temperature and activation energy, while polycrystal materials exhibit a slight decrease in activation energy compared to single-crystal materials, with an increase in total enthalpy.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Juan Li, Youlong Xu, Cheng He, Jiping Zhao, Yu Liang
Summary: This study successfully prepared ball-like alpha-Fe2O3 as a sulfur host material to alleviate LiPS dissolution, and found that the (110) crystal plane facilitates the conversion of LiPS, thus suppressing the shuttle effect. The study provides a new idea for exploring the adsorption capacity of metal oxides with different crystal faces towards polysulfides and opens up the possibility for the commercialization of Li-S batteries.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
Jinyun Liu, Liying Zhu, Zihan Shen, Min Zhang, Tianli Han, Huigang Zhang
Summary: The study introduces a unique doughnutlike graphene quantum dot (GQD)/Fe2O3@S@SnO2 composite for high-performance Li-S batteries. The composite enhances sulfur utilization and energy storage performance, displaying promising capacity, efficiency, and rate performance. These findings suggest potential for developing other high-performance materials and their secondary batteries.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Zhiyi Jiang, Chenyu Yan, Qiang Zhang, Caihong Yang, Muhammad Tariq Sarwar, Aidong Tang, Huaming Yang
Summary: This study prepared Palygorskite/polyaniline composites and discovered that the Pal/P-Mo composite exhibited higher specific capacity and longer cycle life compared to other composites. This is attributed to the regulatory effect of Palygorskite on the PANI chain structure and the dispersion of MoS2 catalytic sites.
APPLIED CLAY SCIENCE
(2023)
Article
Electrochemistry
Ana L. Paez Jerez, Lilian E. Davies, Alvaro Y. Tesio, Victoria Flexer
Summary: A novel ternary compound was synthesized using a simple ball-milling and heating process in an inert atmosphere, which was then incorporated into the cathode of Li-S batteries, resulting in high and stable capacity values. The combination of SPAND and TiO2 showed synergistic behavior and improved the overall kinetics of the redox processes, leading to excellent cycling performance.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
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
Chemistry, Multidisciplinary
Yifan Ding, Zixiong Shi, Yingjie Sun, Jianghua Wu, Xiaoqing Pan, Jingyu Sun
Summary: A generic and simple material strategy has been presented to fabricate advanced mediator for improved sulfur electrochemistry. The Li-S cells derived from this strategy exhibit impressive cyclic performances and durable areal capacity, indicating the potential for rationalizing the design and modulation of reliable polysulfide mediators in Li-S batteries.
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)