Article
Chemistry, Physical
Xuliang Lin, Lijing Xue, Bowen Liu, Xueqing Qiu, Jianglin Liu, Xiaofei Wang, Yi Qi, Yanlin Qin
Summary: In this work, metal sulfides encapsulated with S/N co-doped carbon were synthesized using a one-step pyrolysis strategy. The encapsulated Co9S8-Ni3S2 heterojunction showed a low overpotential of 200 mV and a high current density of 10 mA cm(-2). It also exhibited excellent stability with only a slight increase in overpotential after a 50-hour chronoamperometric stability test. Density functional theory calculations confirmed the optimized electronic structure and improved OER reaction activity of the Co9S8-Ni3S2 heterojunctions encapsulated with S/N co-doped carbon. This study provides a novel strategy for the construction of highly efficient and sustainable metal sulfide heterojunction catalysts using lignosulfonate biomass as an assistance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Xinyu Wang, Xu Yu, Shuang Wu, Pinyi He, Fu Qin, Yongkang Yao, Jianliang Bai, Guojun Yuan, Lili Ren
Summary: A crystalline-amorphous Ni3S2/NiPx electrocatalyst with a coupled interface was developed, which exhibited high catalytic performance for the oxygen evolution reaction (OER). The catalyst showed low OER overpotential and small Tafel slope, indicating excellent long-term stability with less than 5% decay in activity over 20 hours of continuous operation. This study provides inspiration for optimizing catalyst performance by coupling crystalline-amorphous structures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Chang Gao, Linghui Kong, Lu Pan, Dongxv Li, Jianjian Lin
Summary: This study presents a new method for synthesizing metal sulfide catalysts using a sacrificial solvent. The resulting Co9S8/Ni3S2@NF catalyst exhibits excellent OER activity in alkaline environment. This method provides broader opportunities for the development of more efficient and sustainable catalysts for energy conversion and storage.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Yanan Wang, Zeshuo Meng, Xiliang Gong, Chao Jiang, Chenxu Zhang, Jian Xu, Yaxin Li, Jinyu Bao, Yanan Cui, Haibo Wang, Yi Zeng, Xiaoying Hu, Shansheng Yu, Hongwei Tian
Summary: This study predicts the effect of Fe doping on the stability of Co9S8 using density functional theory and experimentally fabricates Fe-doped Co9S8 hollow spheres. The results show that the doped hollow spheres exhibit superior electrocatalytic performance and cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Ningning Zhou, Rui Liu, Xinwei Wu, Yile Ding, Xiang Zhang, Sheng Liang, Chonghai Deng, Guangchao Qin, Zhulin Huang, Bin Chen
Summary: We proposed a convenient heterostructure engineering strategy to integrate ultra-small Nickel sulfide (Ni3S2) laminar nanocrystallines and amorphous NiFe-(oxy) hydroxides (NiFeOXHy) nanosheets as three-dimensional (3D) freestanding catalyst to regulate electric conductivity and boost mass transport. These super-hydrophilic Ni3S2/NiFeOXHy heterostructure nanosheets with large specific surfaces can create strongly synergistic couplings of accessible active sites at the interfaces, expedite the electrolyte penetration and make gas bubbles to rapidly release the surface, significantly facilitating intrinsic the kinetics for oxygen evolution reaction (OER). Intriguingly, the self-supported Ni3S2/NiFeOXHy heterostructure nanosheets array displays remarkable OER activity with ultralow overpotentials of only 209 and 243 mV at 50 and 100 mA cm-2, small Tafel slope of 79.8 mV dec- 1, as well as good stability up to 55 h. Also, the Ni3S2/NiFeOXHy
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Yilin Deng, Wei Lai, Lihong Ge, Hua Yang, Jian Bao, Bo Ouyang, Huaming Li
Summary: We design an amorphous-NiOOH/crystalline-Ni3S2 heterostructured catalyst with abundant reactive amorphous-crystalline interfacial sites and higher valence states of active centers, optimizing the adsorption of OER intermediates. This catalyst exhibits low overpotential, small Tafel slope, and good stability.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Xueting Feng, Qingze Jiao, Jiatao Zhang, Huiru Cui, Hansheng Li, Yun Zhao, Caihong Feng
Summary: A hierarchical heterostructure consisting of MoSx@Co9S8@Ni3S2/NF was constructed on a 3D Ni foam, which exhibited excellent catalytic activity for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) in 1 M KOH. The superior catalytic activity of MoSx@Co9S8@Ni3S2/NF for overall water splitting was demonstrated, surpassing the performance of commercial Pt/C/NF||IrO2/NF and showing better stability.
Article
Chemistry, Physical
Yanqiang Li, Chao Wang, Ming Cui, Jiabin Xiong, Liwei Mi, Siru Chen
Summary: Developing a low-cost and high-efficiency bifunctional catalyst MoO2@MoS2@Co9S8 is critical for catalyzing electrochemical overall water splitting to produce hydrogen. Utilizing an in-situ reduction and vulcanization strategy, MoO2@MoS2@Co9S8 heterostructure nanorods were prepared with outstanding catalytic performances for both HER and OER. The 2D nanosheet assembled heterostructure nanorods can effectively catalyze water splitting with high stability, demonstrating practical application potential.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Xuanping Wang, Longbin Li, Mingzhu Shi, Yiqi Wang, Guodong Xu, Kai Yuan, Peipei Zhu, Mengning Ding, Yiwang Chen
Summary: In this study, a self-supporting nanosheet catalyst was designed based on metal sulfide heterojunctions for the reduction of nitroarenes in aqueous solution. The catalyst exhibited efficient reduction performance and excellent functional group tolerance. Mechanistic investigations revealed that electron transfer from Ni3S2 to Co9S8 was beneficial for the reaction and reduced the energy barrier for the reduction of nitroarenes.
Article
Nanoscience & Nanotechnology
Zehao Zang, Xuewei Wang, Xiang Li, Qingling Zhao, Lanlan Li, Xiaojing Yang, Xiaofei Yu, Xinghua Zhang, Zunming Lu
Summary: This study presents a novel heterostructure catalyst Co9S8/Cu2S/CF with low overpotentials for water splitting. The strong interfacial interaction promotes water molecule dissociation, achieving efficient alkaline water splitting.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Khalil Ur Rehman, Shaista Airam, Xiangyun Lin, Jian Gao, Qiang Guo, Zhipan Zhang
Summary: The study proposes a facile strategy to synthesize oxygen-defect-rich Co9S8/CoO hetero-nanoparticles with a nitrogen-doped carbon shell, exhibiting excellent bifunctional catalytic activities with low overpotentials in both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The outstanding performance is attributed to the unique heterostructure and oxygen defects in the Co9S8/CoO nanoparticles, offering new insights for designing cost-effective, noble-metal-free electrocatalysts.
Article
Chemistry, Physical
Anchu Ashok, Anand Kumar, Afdhal Yuda, Abdullah Al Ashraf
Summary: This study reports the preparation of a highly active catalyst, N,S-Co@CNT, which is derived from hierarchical Co9S8 nanowires trapped in Ndoped carbon nanotubes. Compared to traditional Co@CNT, N,S-Co@CNT exhibits higher current density and lower onset potential, attributed to its unique hierarchical structure and surface properties.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Qiucheng Xu, Mingshan Chu, Miaomiao Liu, Jiahao Zhang, Hao Jiang, Chunzhong Li
Summary: In this study, a novel fluorinated Ni3S2 nanoarray electrocatalyst was reported, exhibiting excellent electrochemical performance during the OER process. The electrocatalyst showed a larger electrochemical active surface area, better conductivity, and higher OER activity, resulting in lower overpotential and Tafel slope compared to most reported Ni3S2-based electrocatalysts. The activation of NiF bonds under OER process generated highly active Ni-OOH species, contributing to the acceleration of rate-determining step.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Zongpeng Wang, Zhiping Lin, Jun Deng, Shijie Shen, Fanqi Meng, Jitang Zhang, Qinghua Zhang, Wenwu Zhong, Lin Gu
Summary: By redesigning the six-coordinated octahedrons in Co9S8 using an Fe-incorporated method, the overall d-band center is regulated to achieve optimized adsorption and superior OER activity. This work sheds light on the design of OER catalysts through polyhedron engineering using topochemical deintercalation, resulting in a 95 mV reduction in overpotential at 10 mA cm(-2).
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Qirun Wang, Xiaoqiang Du, Xiaoshuang Zhang
Summary: The study focused on the preparation and characterization of NiCoM (M = P, S, Se, O)-Ni3S2-MoS2 hybrid material for electrochemical reactions. The NiCoP-Ni3S2-MoS2 exhibited high activity for the hydrogen evolution reaction, and the NiCoSe-Ni3S2-MoS2 showed excellent performance for the oxygen evolution reaction. The findings provide insights into the development of efficient and cost-effective catalysts for water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Electrochemistry
Shuguang Chen, Yuhan Li, Baoxin Wu, Zixu Wu, Fujin Li, Jianghong Wu, Peng Liu, Haibin Li
ELECTROCHIMICA ACTA
(2018)
Article
Chemistry, Physical
Shuguang Chen, Baoxin Wu, Hao Qian, Zixu Wu, Peng Liu, Fujin Li, Hao He, Jianghong Wu, Bo Liu
JOURNAL OF POWER SOURCES
(2019)
Article
Chemistry, Applied
Baoxin Wu, Hao Qian, Zhongwu Nie, Zhongping Luo, Zixu Wu, Peng Liu, Hao He, Jianghong Wu, Shuguang Chen, Feifei Zhang
JOURNAL OF ENERGY CHEMISTRY
(2020)
Article
Electrochemistry
Baoxin Wu, Feifei Zhang, Zhongwu Nie, Hao Qian, Peng Liu, Hao He, Jianghong Wu, Zhaoyong Chen, Shuguang Chen
Summary: Efforts have been made to pursue a high-energy-density supercapacitor for practical applications in energy storage devices. By developing a battery-like composite electrode, with a rational composition design and continuous NiTe network skeleton, high areal capacitance and super-long cycle life were achieved. The electrode demonstrated good electrical conductivity, buffer effect, and contributions from multiple constituents, leading to high energy density and long cycle life in the assembled supercapacitor.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Hao Qian, Baoxin Wu, Zhongwu Nie, Tiantian Liu, Peng Liu, Hao He, Jianghong Wu, Zhaoyong Chen, Shuguang Chen
Summary: A flexible Ni3S2@Ni/CC electrode was developed and demonstrated excellent performance for supercapacitors and oxygen evolution reaction, with high energy density, good mechanical flexibility, and durability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Yi-Fei Chen, Jia-Hong Li, Tian-Tian Liu, Si-Hang You, Peng Liu, Fu-Jin Li, Meng-Qi Gao, Shu-Guang Chen, Fei-Fei Zhang
Summary: NiFe LDHs have been deposited on carbon cloth using a simple electrodeposition method, forming a NiFe LDHs-NiFe alloy gradient hybrid coating. The electrode exhibits highly active bifunctional oxygen evolution and hydrogen evolution reactions. The NiFe alloy acts as a stable electron highway and skeleton bridge, leading to outstanding stability in overall water splitting.
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)