Article
Agricultural Engineering
Heyang Liu, Hansheng Chen, Kaiyuan Shi, Fei Zhang, Shengwei Xiao, Lingqi Huang, He Zhu
Summary: This study demonstrates the fabrication of porous carbon cathode materials with high specific capacitance and energy density for zinc ion capacitors. The electrochemical performance of these materials is superior to other biomass-derived porous carbon cathodes. The underlying mechanism is evaluated and the feasibility of using lignin resources for high-performance ZICs is presented.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Electrochemistry
Dianzhang Wang, Zijiong Li, Dongfang Guo, Min Sun
Summary: Zinc-ion hybrid supercapacitors have advantages of high power density, long lifetime, low cost, and environmental protection. However, their energy density is restricted by the low specific capacitance of carbon electrode materials. This study introduces a novel method to synthesize zinc and nitrogen co-doped porous carbon materials, improving the electrochemical properties and enhancing the energy density of ZHSCs.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Yibo Zhang, Zhihua Li, Liangjun Gong, Jun Liu
Summary: In this study, a graphene-supported porous V2O3 nanocomposite (V2O3@graphene) was fabricated and applied as a cathode for aqueous zinc-ion batteries (ZIBs), showing exceptional electrochemical performance including high capacity, remarkable rate performance, and outstanding cyclic stability. This work is of great importance for the development of high-performance vanadium-based cathodes for ZIBs.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
Xiaowen Fan, Penggao Liu, Baixue Ouyang, Ruizheng Cai, Xinxin Chen, Xicang Liu, Weifang Liu, Jue Wang, Kaiyu Liu
Summary: Aqueous zinc-ion hybrid capacitors with a cathode made of honeycomb-like porous carbon synthesized through pre-oxidation display superior electrochemical performance, including larger specific surface area and faster kinetics, leading to higher energy density and cycling stability.
Article
Materials Science, Multidisciplinary
Jinglong Zhuang, Feng Wei, Hang Zou, Jianfeng Wang, Mengcheng Han
Summary: In this study, an oxygen-rich lotus-shaped porous carbon (OLPC) cathode was synthesized for high performance zinc ion hybrid capacitors (ZHCs) by using phenanthrene as carbon precursor and potassium oxalate activation. The OLPC cathode displayed superior areal capacity, rate capability, energy density, and long-term life.
Article
Engineering, Environmental
Hongxia Li, Jie Wu, Letong Wang, Quanxing Liao, Xiaohui Niu, Deyi Zhang, Kunjie Wang
Summary: This study assembled a high-performance aqueous zinc ion hybrid capacitor using hierarchically porous carbon rod derived from a metal-organic framework, demonstrating excellent specific capacitance and high energy density. This suggests the great potential of MOF-derived carbon materials in ZIHC devices.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Dewei Wang, Shuangyu Wang, Zeming Lu
Summary: The use of potassium thioacetate activation technique to produce S-doped 3D porous carbons (S-3DPCs) for ZHSCs cathodes shows excellent electrochemical performance, with a large specific surface area and a certain amount of sulfur, indicating significant potential for applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Ajay Dattu Jagadale, Ravichandran Chitra Rohit, Surendra Krushna Shinde, Dae-Young Kim
Summary: Researchers have shown interest in hybrid supercapacitors which use a combination of ions to improve energy density and power performance. Devices based on multivalent ions have gained considerable attraction compared to those based on alkali metals.
Article
Chemistry, Multidisciplinary
Xilian Xu, Ye Chen, Wanrui Li, Ruilian Yin, Dong Zheng, Xinxin Niu, Xiaojing Dai, Wenhui Shi, Wenxian Liu, Fangfang Wu, Min Wu, Shengli Lu, Xiehong Cao
Summary: A MnO2-carbon hybrid framework is reported, obtained by reacting the dimethylimidazole ligand from a rational designed MOF array with potassium permanganate, achieving ultralong-cycle-life ZIBs. The uniform MnO2 nanocrystals well-distributed in the carbon matrix lead to a 90.4% capacity retention after 50,000 cycles. In situ characterization and theoretical calculations confirm the boosted reaction kinetics due to co-ions intercalation. The hybridization between MnO2 and carbon enhances electrons/ions transport kinetics and structural stability, providing a facile strategy to improve the battery performance of manganese oxide-based ZIBs.
Article
Chemistry, Multidisciplinary
Xuemei Ma, Xinxin Cao, Mengli Yao, Lutong Shan, Xiaodong Shi, Guozhao Fang, Anqiang Pan, Bingan Lu, Jiang Zhou, Shuquan Liang
Summary: This work introduces organic-inorganic hybrid cathodes with a dual energy-storage mechanism for aqueous zinc-ion batteries, providing high specific capacity, elevated voltage, and excellent long-term cycle stability. Density functional theory calculations show remarkable electronic conductivity with an ultralow diffusion barrier, opening new research directions in high-energy secondary batteries.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Chengjie Yin, Jianhui Chen, Cheng-Ling Pan, Yusong Pan, Jinsong Hu
Summary: By using a carbon coating strategy, the performance of manganese oxide cathode in aqueous zinc-ion batteries has been successfully improved, achieving a higher specific capacity and satisfactory cyclic stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Environmental
Yanyan Du, Yufeng Xu, Yulin Zhang, Beibei Yang, Hongbin Lu, Cunwang Ge, Duan Bin
Summary: This study develops a dissolution-regrowth and conversion strategy using a metal-organic framework template to in situ form porous one-dimensional channels and unique nanostructures of CoVOx oxide. The unique structure allows for high diffusion and low interfacial resistance, resulting in a high reversible capacity of 288 mAh/g and long cycle life of the CoVOx-2 nanoplate cathode. These findings provide a new insight into high-performance MOF-derived unique structure designs for rechargeable battery electrodes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Hongxia Li, Pengyuan Su, Quanxing Liao, Yongdong Liu, Yunfeng Li, Xiaohui Niu, Xiaoyu Liu, Kunjie Wang
Summary: Zinc-ion hybrid capacitors (ZIHCs) have been recognized as a promising energy storage candidate due to their low cost and high safety. In this study, an oxygen-enriched hierarchical porous carbon was fabricated from olive leaves through pyrolysis and chemical activation. The hierarchical porous carbon cathode exhibited high ions adsorption capacity and fast kinetic behaviors, thanks to the abundant interfacial active sites and short ions/electrons transfer length. Additionally, the oxygen-rich functional groups improved the wettability and conductivity of the porous carbon, providing extra pseudocapacitance. The assembled ZIHC device demonstrated an excellent energy density of 136.3 Wh kg(-1), high power output of 20 kW kg(-1), and long cycle life with 91% capacity retention over 20,000 cycles at 10 Ag(-1).
Article
Energy & Fuels
Fei Mo, Yanyan Wang, Tingting Song, Xiaoliang Wu
Summary: In this paper, nitrogen-oxygen co-doped hierarchical porous carbon (HPC) was prepared through a one-step carbonization method. The HPC-4 electrode exhibited excellent electrochemical performance due to its three-dimensional interconnected hierarchical porous structure, high content of heteroatomic functional groups, and large specific surface area. A symmetrical supercapacitor assembled with two HPC-4 electrodes achieved an energy density of 21.13 Wh kg-1 (100 W kg-1). Furthermore, a zinc-ion hybrid capacitor constructed with HPC-4 as the cathode, zinc foil as the anode, and 2 M ZnSO4 as the electrolyte showed outstanding capacitance (282.81 F g-1), ultra-high energy density (100.56 Wh kg-1), and excellent cycle performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Te Qin, Lu Qin, Jianling Li
Summary: In this paper, a metal organic framework (HKUST-1) with a specific morphology was successfully synthesized and CuTe@C composites were prepared. When CuTe@C is applied to the cathode material for AIBs, it shows excellent electrochemical performance.
Article
Chemistry, Multidisciplinary
Xiaowei Wang, Yuchen Sun, Wei-Chao Zhang, Xiang Wu
Summary: Rational design of electrode materials with core-shell nanostructures is important for improving the electrochemical performance of supercapacitors. In this study, several CuCo2O4 @Ni-Co-S composite electrodes were prepared, which showed high electrochemical activity as a result of their three-dimensional structure. The heterostructured materials exhibited a specific capacitance of 1048 C/g at 1 A/g, and maintained 75.6% of their initial capacity after 2000 cycles at 10 A/g. With a power density of 2280 W/kg, the device achieved an energy density of 79.2 Wh/kg.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ying Liu, Yi Liu, Xiang Wu
Summary: With the rapid development of sustainable energy sources, aqueous zinc-ion batteries (AZIBs) have emerged as a highly promising energy storage technology. The construction of suitable electrode materials is crucial for improving the overall performance of AZIBs. Recent research has focused on the modification of vanadium-based cathodes, exploring defect engineering strategies such as oxygen defects, cation vacancies, and heterogeneous doping. The effects of these defects on the electrochemical performance of electrode materials are discussed, along with future challenges and development directions for V-based cathode materials.
CHINESE CHEMICAL LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Yuchen Sun, Xiaowei Wang, Xiang Wu
Summary: In supercapacitors, the synthesis of MoO42--intercalated LDH heterostructures can enhance the specific capacitance and energy density, potentially enabling their application in future energy storage devices.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Electrochemistry
Mengdi Wang, Xingyu Liu, Xiang Wu
Summary: Layered double hydroxides (LDHs) have potential as electrode materials for supercapacitors due to their unique spatial structures. In this study, several NiCo-LDH materials are obtained through a simple selenization process, improving conductivity and reducing electrochemical impedance. The 0.4Se-NiCo-LDH materials exhibit a specific capacitance of 1396 F/g at 1 A/g and a capacity retention rate of 91.38% after 10,000 cycles. Furthermore, when used as a positive electrode, an asymmetric supercapacitor achieves an energy density of 60 Wh/kg at a power density of 2700 W/kg, showing promising applications for future flexible energy-storage systems.
Article
Electrochemistry
Jingxuan Liu, Xiang Wu
Summary: Two-dimensional transition metal sulfides (TMDs) with various morphology and microstructure are synthesized via a facile hydrothermal process. The electrochemical tests demonstrate that the MoS2/Ni3S2 composites deliver higher theoretical capacity and superior cycling stability compared to their single counterparts. The capacitance of the MoS2/Ni3S2 sample reaches 810 C/g at 1 A/g. The hybrid supercapacitor assembled using these composites exhibits an energy density of 33.75 Wh/kg at 2700 W/kg and retains 78.57% of the initial capacitance after 10,000 cycles, showcasing their great potential in future flexible micro/nano energy systems.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Xinyu Huai, Jingxuan Liu, Xiang Wu
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Shilong Li, Ming Zhao, Dongdong Zhang, Xiang Wu
Summary: Layered delta-MnO2 materials are considered to be ideal cathode materials for zinc ion storage, but the structural collapse during long cycling affects device performance. Preintercalation of cations is an efficient strategy to modulate the electrode structure and improve performance. In this study, K+ ion was introduced into the delta-MnO2 interlayer using a solvothermal route. The prepared samples delivered a capacity of 389 mA h/g at 0.2 A/g and maintained a capacity retention of 95% after 1000 charge/discharge cycles, demonstrating their important application prospects in the field of portable electronics.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Mengdi Wang, Xingyu Liu, Xiang Wu
Summary: It is crucial to design catalysts with unique spatial structures and excellent electrochemical performance. Although non-noble metal catalysts are less active than Pt-based ones, their catalytic ability can be enhanced by the synergistic effect of different components. In this study, several dendritic-like CoP@NiCo-LDH hetero-catalysts were synthesized using a multi-step growth route. The CoP@NiCo LDH-100 samples exhibited superior performance in OER and HER compared to commercial IrO2 (OER) and Pt/C (HER) in alkaline electrolyte. Density functional theory (DFT) calculation showed that the composites had low adsorption energy and tunable charge redistribution at the interface. The enhanced conductivity of the catalyst was confirmed by an increased Fermi-level PDOS value. The upward shift of the D-band center facilitated the desorption of intermediates and accelerated the hydrolysis dissociation process, leading to improved HER activity and reduced overall electrolysis voltage.
Editorial Material
Chemistry, Multidisciplinary
Xiang Wu
Article
Chemistry, Multidisciplinary
Ming Zhao, Shilong Li, Ahmad Umar, Xiang Wu
Summary: To meet the increasing demand for electricity, it is crucial to develop energy storage devices with high capacity and long cycle life. Aqueous zinc ion batteries (AZIBs) have gained attention for their eco-friendly nature and nonflammable electrolyte. However, their limited energy density hampers their further applications. In this study, nanowires of (NH4)2V10O25. 8H2O were prepared using a simple water bath method, and button cells assembled with these nanowires as cathode exhibited promising performance, delivering a specific capacity of 421 mAh g-1 at a current density of 0.2 A g-1. At 10 A g-1, it provided a capacity of 245.0 mA h g-1 with a capacity retention of 63% after 5000 cycles, indicating their potential applications in future energy storage devices.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Ying Liu, Yi Liu, Xiang Wu
Summary: Vanadium-based compounds with bi-phase coexisting CaV2O6/NaV6O15 nanobelt structures show enhanced electrical conductivity, improved zinc ion diffusion, and stronger structural stability, making them promising cathode materials for aqueous zinc-based batteries. The electrode materials deliver a specific capacity of 312 mAh g(-1) at 5 A g(-1) after 2000 cycles, and still maintain a capacity of 231 mAh g(-1) at 10 A g(-1) with a cycle life of 6500 times.
Article
Chemistry, Analytical
Dengke Wang, Ahmad Umar, Xiang Wu
Summary: Electrolysis of water is an efficient strategy for developing sustainable energy sources, but its low efficiency limits its large-scale application. In this study, ternary NiCoP sheet-like structures were synthesized and showed low overpotentials for hydrogen and oxygen evolution reactions, as well as high voltage for overall water splitting, providing a general protocol for designing efficient non-noble metal electrocatalysts.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Shiqi Zhao, Jingxuan Liu, Xiang Wu
Summary: Aqueous zinc-ion batteries (AZIBs) are advantageous in terms of safety, environmental friendliness, and large theoretical capacity. In this study, the use of VS4 nanosheets as cathode electrodes achieved excellent discharge capacity and rate performance.
Article
Chemistry, Applied
Yi Liu, Xiang Wu
Summary: In this study, a vanadium-based electrode material with abundant phase boundaries and oxygen defects was designed to improve the reaction kinetics and structural stability of aqueous zinc ion batteries. The assembled batteries showed high specific capacity and retention rate, and exhibited excellent mechanical stability.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Review
Electrochemistry
Yi Liu, Ying Liu, Xiang Wu
Summary: Aqueous zinc-ion batteries (AZIBs) are considered as potential alternatives to lithium-ion batteries (LIBs) due to their safety, convenience, and environmental friendliness. However, the use of vanadium-based compounds as cathodes for AZIBs often leads to dissolution and large volume changes. The pre-insertion strategy of guest ions or molecules provides an effective solution to this problem.
BATTERIES & SUPERCAPS
(2023)
