Article
Nanoscience & Nanotechnology
Hongna Xing, Weijun He, Yibo Liu, Guankui Long, Yong Sun, Juan Feng, Wei Feng, You Zhou, Yan Zong, Xinghua Li, Xiuhong Zhu, Xinliang Zheng
Summary: The ultrathin and highly crumpled CoP/reduced graphene oxide (rGO) nanosheet arrays grown on nickel foam exhibit extraordinary electrochemical performance in supercapacitors, with superior specific capacity and cycle stability. The synergistic effects of CoP with large specific capacity and rGO with high conductivity contribute to the outstanding rate capability and energy density of the CoP/rGO electrode. The combination of high capacitive metal phosphides with conductive carbon in the design of electrode materials is significant for energy storage systems.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
Qiong Bi, Qingxiang Ma, Kai Tao, Lei Han
Summary: In this study, ultrathin Ni-MOF nanosheets were grafted onto Co3O4 nanosheets to create hierarchical core-shell Co3O4@Ni-MOF 2D nanosheet arrays, exhibiting high specific capacity, energy density, and good long-term durability. The unique structure and synergic effects of the core and shell greatly enhance the performance of the Co3O4@Ni-MOF/NF electrode, showing great promise for real energy storage devices.
DALTON TRANSACTIONS
(2021)
Article
Energy & Fuels
Ying Xue, Zhengjie Xie, Xilong Liu, Liangyu Liu, Yixin Li, Yingjie Hua, Xudong Zhao, Xiaoyang Liu
Summary: Hierarchical core-shell heterostructured NiCo2O4@MnMoO4 nanosheet hybrid arrays were synthesized and exhibited outstanding electrochemical performance.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Inorganic & Nuclear
Xiaoqin Min, Zhitao Bo, ZhiKun Xu, Junhui Feng, Xiaoyun Lin, Yongnian Ni
Summary: A porous core-shell heterostructure of FeNi2-LDH@FeNi2S4 (FNLDH@FNS) was prepared on nickel foam via a two-step hydrothermal method. The electrode material exhibited excellent electrochemical performance, with high specific capacity values and long cycle life. An asymmetric supercapacitor assembled with FNLDH@FNS and activated carbon (AC) showed high energy density and power density.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Zhengjie Xie, Liangyu Liu, Yixin Li, Deyang Yu, Lihong Wei, Leiyun Han, Yingjie Hua, Chongtai Wang, Xudong Zhao, Xiaoyang Liu
Summary: The study successfully synthesized core-shell structured Ni3S2@MnMoO4 nanosheet arrays on Ni foam, demonstrating excellent specific capacity and cycling stability. An asymmetric supercapacitor (ASC) device using the optimized electrode achieved high energy density and cycling stability at a high current density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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, Multidisciplinary
Chuan Gang, Jiayi Chen, Xu Li, Bo Ma, Xudong Zhao, Yantao Chen
Summary: A novel core-shell heterostructure composed of Cu3P nanowires with supported CoO nanosheets was synthesized. The as-prepared Cu3P@CoO exhibited high efficiency for hydrogen evolution due to numerous active sites and synergistic effect. The theoretical calculations showed that Cu3P@CoO had a zero bandgap and optimized adsorption free energy of intermediates, leading to enhanced charge transfer and intrinsic activity.
Article
Engineering, Environmental
Thangavel Kavinkumar, Ganghyun Jang, Amarnath T. Sivagurunathan, Do-Heyoung Kim
Summary: In this study, a porous NiFeP/MoO2@Co3O4 core-shell heterostructure was constructed on a nickel foam using a hydrothermal route, phosphorization treatment and atomic layer deposition. The resulting NiFeP/MoO2@Co3O4 cuboids exhibited lower charge transfer resistance, rich electroactive sites, and shorter ion diffusion paths. The excellent supercapacitive performance of the cuboids was attributed to the rich active sites and strong electronic interaction between Co and Ni/Fe/Mo species. Furthermore, a hybrid device with a NiFeP/MoO2@Co3O4 cathode and a graphene anode achieved a high energy density and exceptional capacity retention.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Zihao Wang, Kai Zhao, Lei Wang, Miao Tian, Yuesheng Sun, Chunxiao Wang, Xiaolin Sun, Jingquan Liu
Summary: Researchers have successfully constructed hierarchical CuCo2O4@NiMn-layered double hydroxides (CCO@NM-LDH) core-shell heterostructures, which provide a large specific surface area and numerous active sites, improving the capacitive performance of the material. By modulating the reaction time of NiMn-LDH, the CCO@NM-LDH-2 electrode exhibits the best capacitance and retention of capacitance, and the assembled CCO@NM-LDH-2//AC asymmetric supercapacitor (ASC) shows high energy density and power density.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Zhixiao Zhang, Yingjie Shi, Xu Zhao, Ao Zhou, Rong Liu, Hongwei Che, Guangsuo Wang, Jingbo Mu, Xiaoliang Zhang, Xiaorong Zhang
Summary: Core-shell NiCoSe@CoS nanotube arrays were synthesized via hydrothermal method and electrodeposition, showing enhanced electrochemical activity, ion diffusion pathways, and charge storage capacity. The heterostructures improved structural stability and electrode reaction kinetics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Shobhita Singal, Ashish Yadav, Gurmeet Singh, Raj Kishore Sharma
Summary: This study reports a carbon-based molybdenum-vanadium diboride material with enriched grain boundaries, which exhibits excellent capacitive performance, rate performance, and cycling stability in aqueous supercapacitors. Grain boundaries in the nanostructure enhance charge storage characteristics.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Environmental
Yaqi Wu, Ying Deng, Jiaxin Zhang, Shujuan Lv, Zhenyu Xiao, Lu Liu, Xiaoping Jia, Chao Chen, Zhenhua Dang, Zhenjiang Li, Lei Wang
Summary: In this work, a high performance hybrid BCNP//rGO-Zn supercapacitor device is constructed, delivering an outstanding energy density of 376.5 Wh kg-1 at 1.66 kW kg -1 and a stable cell output voltage at 1.5-1.8 V. The excellent energy storage performance can be attributed to the in-situ ions exchanging process and the introduction of rGO-Zn negative electrode. The as-fabricated BCNP//rGO-Zn device shows promising application prospects by powering a 1.5 V thermometer for over 3 hours with just one minute of charging.
CHEMICAL ENGINEERING JOURNAL
(2023)
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
Qing Xu, Yintao Wang, Suci Meng, Deli Jiang, Min Chen
Summary: In this study, a facile and low-cost method was used to prepare CoMn2O4@Ni3S2 core-shell nanoneedle arrays, which showed high specific capacity and excellent cyclical stability as supercapacitor electrodes. The hybrid supercapacitor assembled with CoMn2O4@Ni3S2 cathode and activated carbon anode exhibited a high energy density and power density.
Article
Chemistry, Physical
Jinhe Wei, Fei Hu, Xiong Shen, Bingkun Chen, Lin Chen, Zhongming Wang, Chenglong Lv, Qiuyun Ouyang
Summary: The vertically oriented NiCo2S4/MnO2 core-shell nanocomposites, activated by oxygen vacancy engineering, show enhanced electrochemical performance. The hierarchical core-shell nanostructures increase conductivity and provide redox chemical reactions. The NiCo2S4/MnO2-60 electrode delivers appreciable areal capacity and rate capability, and can be used in solid-state hybrid supercapacitors with high energy density and cyclic stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)