Article
Engineering, Electrical & Electronic
Yaoyao Pan, Yuan Yang, Fang Rong, Xiaoyu Huang, Qiang Zhang, Zhili Xu, Xiuhua Wang
Summary: One-dimensional MnO2@C@Ni(OH)(2) core-shell nanowires were successfully synthesized and showed high capacitance and cycling stability as supercapacitor electrode material. The asymmetric supercapacitor composed of MnO2@C@Ni(OH)(2) as positive electrode and activated carbon as negative electrode exhibited high energy density.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Wenjiao Song, Mingze Xu, Xue Teng, Yanli Niu, Shuaiqi Gong, Xuan Liu, Xiaoming He, Zuofeng Chen
Summary: In this study, self-supporting caterpillar-like spinel NiCo2S4 arrays are developed for the oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and urea oxidation reaction (UOR). The bimetallic synergistic effect, unique hierarchical nanostructure, and self-supporting nature contribute to the high activities of the NiCo2S4/CC electrode. Electrolysis experiments demonstrate its excellent performance in both water electrolysis and urea electrolysis for hydrogen production.
Article
Chemistry, Physical
Chunxiao Wang, Yawen Liu, Yuesheng Sun, Liang Cui, Jingquan Liu
Summary: 3D nanoflower-like MCo2O4@MCo2S4@polypyrrole (M = Cu, Mn) core-shell composites were synthesized on nickel foam (NF). The electrode materials showed high specific capacitance and good cycling stability. The asymmetric supercapacitor (ASC) devices exhibited excellent electrical characteristics in terms of high energy density and cycling stability. These results indicate the great application potential of MCo2O4@MCo2S4@polypyrrole composite materials in high-performance supercapacitors.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Inorganic & Nuclear
Yinan Yuan, Henan Jia, Zhaoyuan Liu, Lidong Wang, Jie Sheng, Weidong Fei
Summary: The core-shell structured CuCo2S4@Ni(OH)(2) electrode material designed in this study exhibits a combination of high conductivity and enhanced specific surface area, leading to high specific capacitance and cycling stability in supercapacitors. An asymmetric supercapacitor assembled with CuCo2S4@Ni(OH)(2)//activated carbon shows a high energy density.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Yanchao Fan, Haijia Li, Xin He, Yutong Huang, Chenhao Sun, Tianming Zhu, Haoyuan Liu, Encheng Huangzhang, Feng Sun, Junmin Nan
Summary: A three-dimensional lithium-phobic host composed of Ni foam and MnO2 nanoflowers is developed for a stable lithium metal anode, which exhibits excellent stability, uniform lithium nucleation, and dendrite-free lithium deposition.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shuangpeng Li, Huang Xiao, Jiaying Zhou, Chenyu Zhao, Yi Yuan, Xiaohong Xia, Yuwen Bao, Manon Lourenco, Kevin Homewood, Yun Gao
Summary: This study focuses on improving the performance and stability of ZnCo2O4 batteries by growing nanostructures on carbon cloth and coating other materials onto them. The effect of the carbon cloth on the electrode capacity is also investigated.
Article
Materials Science, Multidisciplinary
Zhang Lei, Yan Yao, Wang Yusu, Jia Yang, Han Yuzhen
Summary: A novel nickel foam supported MnO2@CeO2 core-shell catalyst was prepared and characterized, then applied for SCO flue gas denitration, showing excellent performance and stability with a denitration rate of 97%. The catalyst with 10% loading displayed more uniform surface roughness and improved denitration efficiency.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Jiankang Wang, Rong Peng, Kui Chen, Yajing Wang, Taiping Xie, Quanxi Zhu, Yuan Peng, Songli Liu, Zhongping Yao
Summary: In this study, a immobilized CoNi7O8/MnO2 nanocomposite was successfully synthesized and demonstrated to exhibit excellent catalytic activity for wastewater treatment. The synergistic interactions between the components of the composite were found to contribute to its superior performance. The findings of this research are significant for the development of highly efficient and durable catalysts for PMS-based wastewater purification.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
Liling Lei, Xichen Zhang, Yutian Su, Shishan Wu, Jian Shen
Summary: The study investigated the design of an innovative electrode structure, prepared using a metal-organic framework (MOF)-assisted growth strategy and simple hydrothermal dynamics. The optimized electrode structure exhibited distinguished specific capacity, high energy density, and power density under a potential window of 1.5 V.
Article
Chemistry, Inorganic & Nuclear
Chengzhen Wei, Jun Sun, Yuchen Zhang, Yue Liu, Zhencai Guo, Weimin Du, Lin Liu, Yongming Zhang
Summary: A self-templating strategy was used to prepare hierarchical Ni(OH)(2)-MnO2 hollow spheres with inner cavities, high surface area, and more electroactive sites. This electrode material exhibited high capacitance, remarkable rate capability, and good cycling durability. In addition, a solid-state asymmetric supercapacitor device constructed from these hollow spheres showed high energy density and power density.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Multidisciplinary
Bo Ouyang, Ying Wang, Xi Wang, Zheng Zhang, Feng Liu, Zhi Fang, Erjun Kan, Rajdeep Singh Rawat
Summary: Engineering electrodes with desirable nanostructures for Li+ storage remains a challenge. This study developed a facile carbon plasma strategy combined with controlled reaction temperature to achieve in situ hierarchical metallic nanoparticles and graphene-encapsulated CoMoO4 nanosheets. The nano-frameworks of Co3Mo and graphene shell were modulated by controlling reaction temperature. The synthesized hCCO exhibited excellent electrochemical performances, offering potential for high-performance Li+ storage.
Article
Chemistry, Inorganic & Nuclear
Dong Hyun Lee, Juyoung Baek, Dong Hwan Kim, Jong Wook Roh, Jeongmin Kim, Damin Lee
Summary: Transition metal-based binary and ternary compound arrays were grown directly on a porous Ni foam substrate using a one-step hydrothermal method. The ternary electrode with Ni, Cu, and Zn ions showed a larger surface area and higher entropy than the binary compounds, leading to a shorter diffusion path for electrolyte ions and improved charge transfer. The optimized NixCuyZnz(CO3)(OH)(2) compound exhibited a higher specific capacity and cycling stability than the binary electrode. An asymmetric supercapacitor fabricated with this compound showed high energy density and electrical properties in an illuminated LED device.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Y. Tzeng, C. -Y. Jhan, K. -M. Chiu, Y. -C. Wu, G. -Y. Chen, P. -S. Wang
Summary: Silicon is investigated as an active material for the anode of lithium-ion battery due to its higher specific capacity. Metal foams are used as current collectors to achieve low resistance and high capacity, but loose adhesion and loss of electrical contacts with the collector are issues unless the foam is densely compressed. By pyrolysis, silicon reacts with nickel on a nickel foam to form nickel silicide while the selected binder is graphitized, resulting in a conductive and porous anode. The reported silicon-based anode with nickel foam exhibits excellent cycling performance and high retained capacity after 50 cycles under specific discharge/charge conditions.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Tong Xu, Jianzhi Wang, Miao Wang, Yanan Xue, Jie Liu, Ning Cai, Weimin Chen, Fuhua Huang, Xugen Li, Faquan Yu
Summary: By loading 0D Ag nanoparticles onto 2D Ni(OH)(2) nanosheets via a one-step hydrothermal method, the Ni(OH)(2)-Ag/NF structure was achieved, showing high surface area and excellent charge transfer channels, leading to enhanced electrocatalytic ability for the hydrogen evolution reaction.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Wusheng Zuo, Chao Yang, Limin Zang, Chunliu Liang, Xin Liu
Summary: In this study, MnO2-NixCo1-x(OH)(2)@CF nanosheets were prepared using a one-step hydrothermal process with KMnO4. The optimized Ni-Co molar ratio was found to be 8:2, resulting in high specific capacitance and excellent cycling stability.
JOURNAL OF MATERIALS SCIENCE
(2021)