Article
Chemistry, Physical
Qinhan Liu, Xin Gao, Yanqiu Xie, Jinlong Li, Jing Yang, Haoze Wang, Qian Li, Hongyan Yue
Summary: Designing novel electrode materials with unique microstructures and diverse active components is an effective approach to enhance the energy storage capacity of supercapacitors, as demonstrated by the hierarchical composite Co0.6Mn0.4Se@CoMo-LDH. The prepared material exhibits high specific capacity and excellent capacity retention, along with a high energy density when applied in a hybrid supercapacitor with active carbon.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Lakshya Kumar, Purna K. Boruah, Sukanya Borthakur, Lakshi Saikia, Manash R. Das, Sasanka Deka
Summary: A flexible high-performance supercapacitor cell using nanostructured CuCo-layered double hydroxide (LDH) as electrode material is reported for the first time, showing specific capacity, capacitance, cell voltage, energy density, and power density values. The flexible cell offers long-term stability and Coulombic efficiency, while providing valuable concepts for understanding its exceptional charge storage characteristics.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Huafeng Shi, Kun Yang, Fangfang Wang, Yonghong Ni, Muheng Zhai
Summary: In this study, a non-precious metal bifunctional electrocatalyst was successfully constructed for overall water splitting in 1 M KOH electrolyte. The integral electrode showed excellent long-term stability and continuous catalytic activity for 200 hours, demonstrating its potential for practical application in water electrolysis.
Article
Chemistry, Physical
Liu Wan, Lizi Chen, Mingjiang Xie, Jian Chen, Yan Zhang, Cheng Du
Summary: In this study, highly porous FeCoSe2@NiCo-LDH core-shell nanosheet arrays were decorated on carbon cloth, resulting in a FeCoSe2@NiCo-LDH electrode with enhanced capacity, cyclic stability, and an extensive energy density. The integration of this electrode with a hierarchical porous carbon electrode in a hybrid supercapacitor device achieved high performance and long lifetime.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yangyang Wang, Zongyu Wang, Xiang Zheng, Xinghe Teng, Lin Xu, Yapeng Yuan, Xuehua Liu, Aiping Fu, Yanhui Li, Hongliang Li
Summary: In this study, core-sheath heterostructures composed of MnCo2O4 nanowires wrapped by nanosheets of NiCo-layered double hydroxide (NiCo-LDH) were successfully obtained. The fabricated composite exhibited high specific capacitance, excellent cycling stability, and promising energy density, making it a potential candidate for practical applications in supercapacitors and asymmetric supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Qunfang Liang, TianTian Jiang, Shenhe Zhang, Xianyang Long, Shangchun Yan, Ruiting Dong, Taopeng Luo, Xuetang Xu, Fan Wang
Summary: NiCo LDH nanosheet-supported-nanowire arrays were fabricated through hydrothermal synthesis and subsequent alkali conversion. The electrode exhibited improved capacitance performance with the synergistic effect of nanowires and nanosheets. In all-solid-state asymmetric hybrid supercapacitors, the electrode demonstrated excellent cyclic stability and specific energy retention after a large number of cycles.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Nanoscience & Nanotechnology
Hongbin Liu, Jianchen Li, Lin Ye, Lijun Zhao, Yongfu Zhu
Summary: The hierarchical electrode structure improves the performance of supercapacitive positive materials, demonstrating high rate capacities and long-term cyclic stability, suitable for assembling hybrid supercapacitors with excellent energy density and cycling stability. Additionally, the structure can trigger a blue light-emitting diode (LED), making it have a broad application prospect in energy storage.
ACS APPLIED NANO MATERIALS
(2021)
Article
Energy & Fuels
Yezeng He, Didi Liu, Houqiang Zhao, Jiemei Wang, Yanwei Sui, Jiqiu Qi, Zheng Chen, Ping Zhang, Changjiu Chen, Dongdong Zhuang
Summary: The study successfully prepared C/NiMn-LDH/Ni3S2 electrode material, which maintained a high capacitance even after 5000 cycles, and the two-electrode device assembled with activated carbon showed excellent specific energy.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Biochemistry & Molecular Biology
Z. Tahsiri, M. Niakousari, S. M. H. Hosseini, M. Majdinasab
Summary: A magnetic nanoparticle coated with manganese-aluminum layered double hydroxide (Fe3O4/Mg-Al-CO3-LDH) was used as a porous support for the immobilization of ficin enzyme. The results showed that the Fe3O4/Mg-Al-CO3-LDH had better dispersion due to its core and shell structure. Ficin had a strong affinity for the magnetic LDH support, and the immobilized enzyme could be easily recovered by magnetic interaction. The storage stability of ficin on the Fe3O4/Mg-Al-CO3-LDH was also higher compared to other supports.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Physical
Shrikant Sadavar, Navnath S. Padalkar, Rohini B. Shinde, Saji T. Kochuveedu, Umakant M. Patil, Akash S. Patil, Ravindra N. Bulakhe, Chandrakant D. Lokhande, Insik In, Rahul R. Salunkhe, Jayavant L. Gunjakar
Summary: An exfoliation-reassembling process was used to develop mesoporous intercalative nanohybrids of cationic 2-D cobalt-chromium-layered double hydroxide nanosheets and polyoxovanadate anions, which exhibited promising performance in asymmetric supercapacitors devices.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Environmental
Muhammad Bilal Asif, Hongyu Kang, Zhenghua Zhang
Summary: A CoAl-layered double hydroxide nanosheet membrane (LDHm) with abundant active sites was fabricated for catalytically degrading micropollutants, achieving high removal efficiency. The LDHm/PMS system showed excellent performance in degrading various micropollutants and was not inhibited by changes in solution pH during long-term operation. Reactive species, such as SO4 center dot- and O-1(2), were identified in the LDHm/PMS system, with both =Co and =Al participating in PMS activation.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Li Yu, Xiaocai Ma, Qin Liang
Summary: The relationship between morphology and supercapacitor performance of layered double hydroxides (LDHs) was studied. It was found that the curly sheets of Ni1Co4-LDH exhibited the best capacitance performance due to the increased conductivity. The Co content also influenced the capacitance performance of NixCoy-LDHs.
Article
Chemistry, Physical
Sroeurb Loy, Jun Xiang, Wen-Duo Yang, Yi-Fei Di, Rong-Da Zhao, Fu -Fa Wu, Dong-Mei Ma, Mei -Ting Li, Jia Li
Summary: A 3D hierarchical MnCo2O4@NiO nanosheet was successfully synthesized and calcined using a promising hydrothermal strategy. The MnCo2O4@NiO electrode exhibited a high specific capacitance and excellent cycling stability, making it a promising candidate for supercapacitor applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Jiamin Ma, Jiale Xia, Zhong Liang, Xiaoyun Chen, Yaping Du, Chun-Hua Yan
Summary: Layered double hydroxides (LDHs) are promising electrodes for supercapacitors due to their adjustable composition and superior high capacity, but their experimental specific capacity is lower than theoretical value. Intercalating large-sized anions to increase interlayer spacing is crucial for performance improvement, as demonstrated in a study where a cobalt-nickel LDH hollowcage intercalated with 1,4-benzenedicarboxylic acid showed improved specific capacity and rate performance. The sample with the largest layer spacing achieved a maximum specific capacity of 229 mA h g(-1) at 1 A g(-1), and a hybrid supercapacitor with this sample showed good energy density and cycle stability.
Article
Chemistry, Physical
Junyoung Kim, Tae Ho Kim, Jong Hyeon Lee, Young Ah Park, Yu Jin Kang, Hong Geun Ji
Summary: A porous nanocomposite of layered double hydroxide (LDH) nanosheets and chitosan biopolymer was developed for easy uptake and selective release of cosmetic liposome capsules. The nanocomposite exhibited a high BET surface area and porous structure, allowing for controlled release of large liposome particles depending on solution pH and anions. The polymer network effectively blocked liposome release and the nanocomposites could be successfully reused after washing with ethanol.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Environmental
Hongwei Che, Yamei Lv, Aifeng Liu, Hougui Li, Zengcai Guo, Jingbo Mu, Yanming Wang, Xiaoliang Zhang
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Physical
Boyang Hu, Hougui Li, Aifeng Liu, Congmei Yue, Zengcai Guo, Jingbo Mu, Xiaoliang Zhang, Hongwei Che
Summary: This study addresses the rate capability and cyclic instability issues of cobalt sulfides as electrode materials for supercapacitors by constructing two-dimensional plate-on-sheet CoS2-rGO nanocomposites. The synthesized nanocomposites show improved specific capacitances and retention rates, providing insights into the energy storage mechanism and potential for designing high-performance metal sulfide-based nanocomposite electrodes.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Boyang Hu, Xiaolin Liu, Aifeng Liu, Yanzhao Ren, Zengcai Guo, Jingbo Mu, Xiaoliang Zhang, Zhixiao Zhang, Xiaoyan Liu, Hongwei Che
Summary: The study presents a feasible approach to engineer hollow cobalt selenide-graphene nanocomposites with enhanced electrochemical performance for supercapacitors. The synthesized hollow CoSe2@rGO nanocomposites demonstrate high specific capacity, excellent cyclic stability, and great potential for practical applications in asymmetric supercapacitor cells.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Zongqi Li, Boyang Hu, Ruitao Yu, Tian Tian, Zengcai Guo, Jingbo Mu, Xiaoliang Zhang, Guangshuo Wang, Xiaoyan Liu, Aifeng Liu
Summary: Hollow CoSe2 nanospheres wrapped with reduced graphene oxide (rGO) nanosheets are fabricated, which can reduce aggregation and maintain structural integrity. The wrapping of rGO nanosheets increases electrical conductivity and reduces the adsorption energy of OH- at the CoSe2/rGO interface. The hollow CoSe2/rGO nanocomposites exhibit specific capacities of 757C g-1 at 3 A/g and 552C g-1 at 20 A/g, with a capacity retention of 92% over 5000 cycles at 10 A/g.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yu Zheng, Hongwei Che, Aifeng Liu, Xiaolin Liu, Tian Tian, Zengcai Guo, Jingbo Mu, Xiaoliang Zhang, Yanming Wang, Zhixiao Zhang
Summary: A vacancy engineering strategy coupled with a nanocomposite method was used to construct oxygen vacancy-rich CoAl-LDH nanosheets coupled with N-doped carbon nanotubes. The rich oxygen vacancy defects in CoAl-LDHs not only enhance the electrical conductivity but also reduce the surface adsorption barrier of electrolyte ions, resulting in fast charge storage kinetics. The obtained N-CNT@Ov-CoAl-LDH nanocomposites show a high specific capacity and excellent capacity retention, demonstrating the potential of this approach for designing improved LDHs-based electrodes.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)