Review
Chemistry, Physical
Xue Han, Qi Meng, Xin Wan, Baoyu Sun, Yan Zhang, Baicheng Shen, Jinlong Gao, Yulin Ma, Pengjian Zuo, Shuaifeng Lou, Geping Yin
Summary: Niobium-based oxides, such as Nb2O5 and TiNbxO(2+2.5)x compounds, have shown great potential in electrochemical energy storage due to their unique intercalation pseudocapacitance mechanism. However, their poor electronic conductivity limits practical applications.
Article
Chemistry, Physical
Zhengjing Zhao, Donglai Li, Chengzhi Wang, Debao Fang, Boyu Wang, Jingbo Li, Haibo Jin
Summary: Hierarchical V2O5 microspheres (HVMs) synthesized in this study exhibit excellent electrochemical performance for sodium ion storage, especially at high discharge/charge rates. The material demonstrates high reversible capacities and limited decay over 500 cycles, attributed to fast Na+-ion diffusion and enhanced reaction kinetics through a pseudocapacitive process in the unique hollow structure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Mewin Vincent, Venkata Sai Avvaru, Maciej Haranczyk, Vinodkumar Etacheri
Summary: This paper presents a high-performance Mg-Li dual-ion battery based on a cobalt-doped TiO2 cathode. The cathode demonstrates exceptional pseudocapacitance, specific capacities, rate performance, cyclability, and coulombic efficiency, with rapid charging capability. Cation doping, lattice distortions, and oxygen vacancies contribute to its excellent electrochemical performance.
Article
Engineering, Environmental
Juan Ding, Yudai Huang, Zhenjie Liu, Xingchao Wang, Yue Zhang, Yong Guo, Rui Sheng, Dianzeng Jia, Xincun Tang, Lei Wang
Summary: Fe2Mo3O8 composites with adjusted molar ratio were synthesized for lithium storage and exhibited pseudocapacitive behavior. The unique characteristics significantly enhance Li+ ion diffusion kinetics and improve pseudocapacitance contribution, resulting in high energy/power density and long cycle stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Rang Ping, Yulin Nie, Chongkai Ji, Shun Yang, Lijie Li, Jiong Peng, Xin Li
Summary: By using Al3+ as dynamic acid regulation pillars, the issues of low pseudocapacitance and slowly divalent charges in MXene nanosheets are addressed, achieving enhanced capacity values and a high voltage range. The energy density of the constructed asymmetric ZICs exhibits superior performance compared to traditional electrolytes. DFT calculations reveal the enhancement mechanism of acid regulation dynamic pillars on electrochemical performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Energy & Fuels
Jelby George, Manoj Balachandran
Summary: Extrinsic pseudocapacitance is a widely explored field in the energy storage industry. It can be imparted to diffusion-controlled energy storage materials through external methods, which helps narrow the boundary between battery-type and pseudocapacitive systems. This review provides insight into the significance of extrinsic pseudocapacitance, as well as recently reported materials, methods, and devices. The future outlook and challenges in transforming this mechanism into next-generation energy storage devices are also discussed.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Hongshun Zhao, Jingjing Zhong, Yanli Qi, Kang Liang, Jianbin Li, Xiaobing Huang, Wenkai Chen, Yurong Ren
Summary: This study develops a sodium-ion battery with a titanium dioxide anode that exhibits extreme fast charging and long cycle life, thanks to the Na+ intercalation pseudocapacitance. The optimized electrode demonstrates high reversible capacity and ionic conductivity, providing key factors for fast charging.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Jiao-Juan Chen, Le-Qing Fan, Zheng-Xue Wu, Xu-Geng Deng, Tao Tang, Yun-Fang Huang, Ji-Huai Wu
Summary: In this study, a redox-active phenothiazine was introduced to enhance the specific capacity of the cathode in lithium-ion capacitors. The resulting phenothiazine/reduced graphene oxide composite cathode exhibited superior performance, with higher discharge specific capacity and exceptional cyclic stability. The introduction of phenothiazine did not compromise the power density of the device.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Meimei Yuan, Hongjun Liu, Fen Ran
Summary: This article highlights the key kinetically limiting factors in the fast-charging process from the perspective of cathodic materials and describes the currently reported fast-charging cathode materials with improved rapid ions diffusion capability and fast reaction kinetics. It discusses a series of strategies, including nanostructure, doping, and multiple-system, while emphasizing the importance of pseudocapacitive contribution in constructing fast-charging lithium-ion batteries and sodium-ion batteries.
Article
Chemistry, Applied
Yanjun Gao, Shaohua Zhang, Lingrui Xu, Xiangyang Li, Lijie Li, Lixia Bao, Jiong Peng, Xin Li
Summary: The study demonstrates that Mo2C/Mo2N heterojunction with a well-regulated interface can achieve remarkable performance in terms of rate and energy output. The improvement of properties is attributed to the synergistic effects of kinetics and thermodynamics. The self-built electric field facilitates rapid migration of electrons/ions at the interface, while the low adsorption energy, high density of states, and low diffusion barrier enhance the electrochemical reaction dynamics. The resulting ultrahigh capacitance retention (85.6% even at 10 A g-1) and pronounced energy output (96.4 Wh kg-1) outperform other Mo2C/Mo2N-based materials in hybrid-supercapacitors. This study provides new insights into the energy storage mechanism of heterojunction and guides the design of advanced electrodes.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Lijing Wang, Xiaolong Yao, Da Chen, Jin Wang, Zhenzhou Zhang, Jieyu Liu, Tianquan Lin, Wei-Hua Wang, Zhanglian Hong, Fuqiang Huang, Weichao Wang
Summary: This study achieved a high pseudo-capacitance by introducing oxygen defects and co-doped defects, providing insights into the design and optimization of electrode materials for the next generation of supercapacitors.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Baoyu Sun, Wei Zheng, Shuaifeng Lou, Bingxing Xie, Can Cui, Guo-Xu Zhang, Fanpeng Kong, Yulin Ma, Chunyu Du, Pengjian Zuo, Jingying Xie, Geping Yin
Summary: This paper presents a method for improving the rate performance and cycling stability of high-capacity anodes through the use of atomic-thickness Co(OH)(2) nanosheets with surface defects and large interplanar spacing. The experimental results show that these nanosheets exhibit high rate-capacity and superior cyclic stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Huanyu Liang, Yongcheng Zhang, Shujin Hao, Luhan Cao, Yanhong Li, Qiang Li, Dong Chen, Xia Wang, Xiangxin Guo, Hongsen Li
Summary: This study demonstrates the use of porous CoV2O6 nanosphere@graphene oxide composites as an anode material for potassium-ion capacitors (PICs) for the first time, showing high performance in terms of discharge capacity and rate capability. The electrochemical reaction mechanism of CoV2O6 and its high electron/K-ion conductivity are comprehensively revealed through various experiments. The PICs based on this anode and activated carbon cathode exhibit high energy/power density and an ultralong lifespan.
ENERGY STORAGE MATERIALS
(2021)
Article
Engineering, Environmental
Huanyu Liang, Hao Zhang, Linyi Zhao, Zhengyuan Chen, Chuanxue Huang, Cunliang Zhang, Zhuan Liang, Yaqun Wang, Xia Wang, Qiang Li, Xiangxin Guo, Hongsen Li
Summary: This study introduces uniformly layered Fe-2(MoO4)3 assemblies as anode materials for Sodium-ion capacitors (SICs), demonstrating fast kinetics, high sodium storage capacity, and long-term lifetime. The improved extrinsic pseudocapacitive contribution of the L-FMO assemblies leads to a high-energy-power density and good cycling stability in SICs, making them promising for energy storage system development.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Mewin Vincent, Venkata Sai Avvaru, Maciej Haranczyk, Vinodkumar Etacheri
Summary: A fast charging and ultralong-life Mg-Na hybrid battery based on an extremely pseudocapacitive hierarchical bronze TiO2 nanosheet cathode is reported for the first time. The two-dimensional cathode exhibited outstanding pseudocapacitance, specific capacities, rate performance, cycling stability, coulombic efficiency and fast charging performance, which are vastly superior to previously reported MgNa hybrid battery cathodes.
CHEMICAL ENGINEERING JOURNAL
(2022)