Article
Materials Science, Multidisciplinary
Gaini Zhang, Jianhua Zhang, Huijuan Yang, Xifei Li
Summary: The porous MnO2 nanosheets (P-MnO2) prepared through an in-situ redox reaction exhibit a high micro/mesoporous structure providing a large ion-accessible surface area for efficient charge storage. The designed nanopores facilitate electrolyte ions diffusion across the 2D MnO2 nanosheets, resulting in higher specific capacitance and desirable rate capability compared to pristine MnO2.
Article
Chemistry, Physical
Qianlan Ke, Yuhui Zhang, Yuanheng Fu, Chenxi Yang, Fan Wu, Zhongxiu Li, Yi Wei, Kun Zhang
Summary: In this study, we investigated the electrochemical performance of a carbon fabric-based supercapacitor coated with MnOx@rGO nanohybrids using a simple one-step hydrothermal method. The effect of the mass ratio of MnOx to rGO on the electrochemical properties was studied. It was found that the supercapacitor with a mass ratio of 0.8:1 for MnO@rGO exhibited a specific capacitance of 831.25 mF cm(-2) at a current density of 0.1 mA cm(-2) when loaded with 5.40 mg cm(-2) of MnO@rGO nanohybrids on carbon fabric. Furthermore, it showed a long-term cycling capacitance retention of 97.2% after 10,000 charge-discharge cycles at a current density of 0.4 mA cm(-2). The high electrochemical performance is speculated to be attributed to the strong interfacial bonding between the hierarchical architecture of MnO@rGO nanohybrids and carbon fabric.
Article
Engineering, Chemical
Xiaohui Wang, Xue Wang, Yali Wang, Quanguo Zhai, Yucheng Jiang, Shuni Li
Summary: In this study, a series of protonated nanobelts based on octahedral molecular sieve-5 (OMS-5) were synthesized and used for electrochemical enrichment of rubidium ion (Rb+) in aqueous solution. The protonated nanobelts exhibited excellent specific capacitance and adsorption capacity, indicating their great potential for selective rubidium ion enrichment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Cuixia Cheng, Fang Chen, Guosong Lai
Summary: In this study, hierarchical copper manganese oxide porous micro/nanospheres were synthesized and showed improved lithium storage performance, including high first discharge capacity, satisfactory cycle performance, fair rate capability, fast Li+ diffusion kinetics, and low activation energy. Additionally, the hierarchical micro/nanospheres maintained their integrity after 500 cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Runze Wu, Jiale Sun, Xingyi Ma, Enhui Bao, Xuming Du, Chunju Xu, Huiyu Chen
Summary: In this study, mesoporous MgCo2O4 nanoflakes and nanowires were successfully synthesized and demonstrated battery-like features for potential applications as cathode materials in advanced supercapacitors. An asymmetric supercapacitor assembled with MgCo2O4 as cathode and AC as anode showed excellent electrochemical performance with high capacity, cycling stability, and energy density. The simple and cost-effective synthesis method with the ability to tune the shape of MgCo2O4 makes it a promising candidate for the next-generation supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Xing Chen, Lei Li, Xiaoli Wang, Kun Xie, Yuqiao Wang
Summary: Three manganese microspheres were prepared and their multiple redox reactions were analyzed, showing that trivalent manganese Mn2O3 exhibited multiple redox transitions during the intercalation/deintercalation of electrolyte ions, leading to high specific capacitance and long cycling stability.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Review
Chemistry, Physical
Nilimapriyadarsini Swain, Balasubramaniam Saravanakumar, Manab Kundu, Lukas Schmidt-Mende, Ananthakumar Ramadoss
Summary: Supercapacitors are considered outstanding candidates among various energy storage devices due to their long-term cycle life, high power density, and minimal safety concerns. To overcome the lower energy density limitation, extensive research efforts have been devoted to exploring various nanostructured three-dimensional electrode materials and developing template-assisted 3D architecture electrodes.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Energy & Fuels
Xiaoyuan Liang, Hang He, Xijia Yang, Wei Lu, Liying Wang, Xuesong Li
Summary: A fully flexible, lightweight, and high-performance supercapacitor was designed by growing NiCo2S4 nanowire on activated carbon cloth using a simple two-step hydrothermal method. The electrode exhibited high area capacitance and good capacitance retention after numerous cycles. Additionally, a flexible asymmetric supercapacitor using the designed electrode and cathode displayed high specific capacitance, energy density, and power density, along with good capacitance retention, indicating the feasibility for wearable energy storage devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
B. N. Vamsi Krishna, Sk Khaja Hussain, Jae Su Yu
Summary: The study focuses on designing different nano/microstructural geometries with porous properties to enhance electrochemical performance in energy storage technology. By utilizing a hydrothermal technique with various chelating agents, different morphologies of manganese vanadium oxides were synthesized, showing promising electrochemical properties. The combination of thorny sphere morphology of MVO material with multi-walled carbon nanotubes led to improved specific capacity, and the resulting asymmetric supercapacitor device exhibited high energy and power density values. Various low voltage electronic devices were successfully powered-up by these devices for real-time applications in energy storage.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Yuto Katsuyama, Nagihiro Haba, Hiroaki Kobayashi, Kazuyuki Iwase, Akira Kudo, Itaru Honma, Richard B. Kaner
Summary: A 3D-hierarchical carbon lattice with ordered macropores and uniform nanopores is prepared using a cheap 3D printer and CO2 activation process. It exhibits a high areal capacitance and is further improved by electrochemically depositing manganese oxide. A high-performance asymmetric supercapacitor is then fabricated, achieving one of the highest reported areal energy and power densities.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Ting Pan, Liu Wang, Yu Shen, Xinglong Zhang, Chengyang Luo, Hongfeng Li, Peng Wu, Hao Zhang, Weina Zhang, Serguei V. Savilov, Fengwei Huo
Summary: In this study, a hierarchically porous amorphous metal oxide catalyst was constructed, exhibiting superior electrocatalytic performance for NRR under ambient conditions. It has the potential to serve as an alternative electrocatalyst for NH3 synthesis.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Muhammad Rafique, Syeda Hajra, Muhammad Zahir Iqbal, Ghulam Nabi, Syed Sajid Ali Gillani, Muhammad Bilal Tahir
Summary: BaxMn1-xO3 is a suitable material for electrochemical devices, with Ba-doped MnO3 being synthesized through different Ba concentrations. The nanorod-like synthesized material exhibited higher surface area with increased dopant concentration, enhancing the electrochemical properties. Analysis of structural properties revealed that crystallite size decreased with increasing dopant concentration, while oxygen vacancies increased, improving the electrochemical properties.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Shipeng Wu, Huimin Liu, Zhen Huang, Hualong Xu, Wei Shen
Summary: In this study, a facile solvent-thermal-reduction strategy was used to fabricate an O-vacancy-rich porous MnO2 nanosheet catalyst (MnO2-PS) for propane catalytic oxidation. The catalyst exhibited improved redox ability and oxygen activation capacity, which accelerated the oxidation of light alkanes. Additionally, the catalyst possessed highly accessible surface and high density of exposed active sites, facilitating the adsorption and activation of reactant molecules.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Energy & Fuels
Madhav P. Chavhan, Vaclav Slovak, Chung-Hsin Lu
Summary: The research revealed the decisive roles of [OH-]/[Ni2+] molar ratios and calcination temperatures in controlling the morphology of NiO nanostructures, leading to the formation of hexagonal nanodisc shapes. Increasing the calcination temperature improved crystallinity but also reduced the BET area and pore volume.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Nanoscience & Nanotechnology
Sang Hwa Lee, Jungjun Lee, Jaemin Jung, A. Ra Cho, Jae Ryeol Jeong, Cu Dang Van, Junghyo Nah, Min Hyung Lee
Summary: The evolution of smart life requires microscale energy storage devices with high power and energy density to integrate IoT devices with sustainable power generators. Pseudocapacitors are considered efficient energy storage devices due to their longer cyclability and high-power density compared to Li-ion batteries, but there are difficulties in patterning microscale electrodes using conventional methods. A one-step fabrication method of micro-supercapacitors was developed through the in situ formation of Co metals and reduced graphene oxides in a one-pot laser scribing process, resulting in a Co/rGO MSC with four times higher capacitance than rGO MSC.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Applied
Congkai Sun, Xiong Zhang, Chen Li, Kai Wang, Xianzhong Sun, Fangyan Liu, Zhong-Shuai Wu, Yanwei Ma
Summary: Sodium-ion capacitors have higher energy and power densities compared with supercapacitors and sodium-ion batteries. A new presodiation strategy using Na2C2O4 as the sacrificial salt is proposed in this study, which is safe, low-cost, and efficient.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Physics, Applied
Yabin An, Chen Li, Xianzhong Sun, Kai Wang, Fangyuan Su, Fangyan Liu, Xiong Zhang, Yanwei Ma
Summary: In this study, porous carbon material with ultra-low oxygen element content was synthesized and used to construct a metal-ion capacitor with high energy density and long cycle life.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Peng-Lei Wang, Xian-Zhong Sun, Ya-Bin An, Xiong Zhang, Chang-Zhou Yuan, Shuang-Hao Zheng, Kai Wang, Yan-Wei Ma
Summary: Nowadays, lithium-ion capacitors (LICs) have become important electrochemical energy storage devices due to their high power and long cycle life characteristics. The compatibility of propylene carbonate (PC)-based electrolyte with commercial carbon anode and activated carbon cathode in LICs has been validated in this study. The effects of additives on PC-based LICs' electrochemical properties have been investigated, and ethylene sulfite has been proven to be an effective additive for capacity retention.
Article
Chemistry, Multidisciplinary
Wenjie Liu, Xiong Zhang, Yanan Xu, Lei Wang, Zhao Li, Chen Li, Kai Wang, Xianzhong Sun, Yabin An, Zhong-Shuai Wu, Yanwei Ma
Summary: The study proposes an electrostatic self-assembly strategy for the synthesis of lithium storage material rGO/MnO, demonstrating its superior electrochemical performance. The as-synthesized rGO/MnO shows high capacity, excellent rate capability, and cycle stability, with the flexible solid-state cell achieving exceptional energy and power density. The results also reveal high safety and long lifespan of the material.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Shengqiang Li, Kai Wang, Gefei Zhang, Shani Li, Yanan Xu, Xudong Zhang, Xiong Zhang, Shuanghao Zheng, Xianzhong Sun, Yanwei Ma
Summary: With the rapid development of the electric vehicle market, there is a high demand for fast charging battery technology. However, traditional graphite anode materials have limitations in their ability to charge quickly. In this review, the current status of fast charging anode materials is summarized, including the challenges faced, the structures and lithium storage mechanisms of different materials, and the recent progress in improving rate performance through various approaches.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Hui Liu, Yun Chen, Zhiguo Wang, Chun Zhang, Xiong Zhang, Wang Zhou, Jilei Liu, Wei Wang, Peng Yu
Summary: In this study, an effective method for obtaining amorphous/nanocrystalline silicon was developed and applied to improve the cycle stability of conductive materials. The experimental results demonstrate that this amorphous/nanocrystalline silicon exhibits excellent electrochemical properties and can be used as an anode material in lithium-ion batteries to enhance energy density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Zhang Guo, Zhien Liu, Xianzhong Sun, Tao Du, Dong Zhang, Yabin An, Xiaohu Zhang, Haitao Zhang, Xiong Zhang, Kai Wang, Yanwei Ma
Summary: The energy storage mechanism of lithium-ion battery capacitors (LIBC) was studied, and the current contribution of external parallel systems (EPS) and LIBC was analyzed. The results showed that the current mainly flows through the capacitor part in the low voltage range and the battery part in the high voltage range. The battery part recharges the capacitor part during the rest period. LIBC showed better performance in high-rate discharge and cycling, providing insights into its mechanisms.
JOURNAL OF POWER SOURCES
(2022)
Article
Energy & Fuels
Wei Zhou, Zhien Liu, Yabin An, Maji Luo, Xiaohu Zhang, Shuang Song, Chen Li, Zehui Liu, Yinghui Gao, Haitao Zhang, Xiong Zhang, Xianzhong Sun, Yanwei Ma
Summary: This study systematically investigates the thermal behavior of lithium-ion capacitors during high-rate discharging, and quantifies the heat transfer mechanisms of each part. The results show that as the discharge rate increases, the temperature curve exhibits an upward parabolic trend. The proportion of irreversible heat to total heat generation is close to 80% at the highest discharge rate. Additionally, the intermittent current method is found to calculate the temperature trends in good agreement with the measured values.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Yibo Ma, Kai Wang, Yanan Xu, Xudong Zhang, Qifan Peng, Shani Li, Xiong Zhang, Xianzhong Sun, Yanwei Ma
Summary: This study presents a facile method to prepare graphene-wrapped carbon cages as a fast and large-capacity anode for lithium-ion capacitors (LICs). The carbon cages with abundant mesopores and the 2D graphene as a conducting bridge contribute to the high performance of the LIC pouch-cell. This research opens up a unique avenue for designing high-performance LICs.
Article
Automation & Control Systems
Shuang Song, Xiong Zhang, Yabin An, Yanwei Ma
Summary: This article proposes two advanced fractional-order models for lithium-ion capacitors, which describe the variation of voltage curve. The structure of the models is determined based on the reaction process, with fractional differentiation introduced into the porous electrode theory to express surface heterogeneity. The physical significance of the constant phase element is analyzed, demonstrating its ability to describe charge redistribution features. The applicability of the models is verified using a parameter identification method.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Electrochemistry
Xiaohu Zhang, Keliang Zhang, Weike Zhang, Xiong Zhang, Lei Wang, Yabin An, Xianzhong Sun, Chen Li, Kai Wang, Yanwei Ma
Summary: Lithium-ion capacitors (LICs) have high-power density, long-term cycling stability, and good energy storage performance, making them widely applicable in new energy, new infrastructure, intelligent manufacturing, and other fields. Carbon nano-onions (CNOs) are promising candidates in energy storage due to their excellent electrical conductivity, large surface area, and nanoscopic dimensions. This study characterized the structure, composition, and electrochemical properties of Ni@CNOs and demonstrated their effectiveness in achieving high-performance LICs with compelling electrochemical performance, cycle stability, and high energy density.
Review
Electrochemistry
Wei Zhou, Zhien Liu, Wan Chen, Xianzhong Sun, Maji Luo, Xiaohu Zhang, Chen Li, Yabin An, Shuang Song, Kai Wang, Xiong Zhang
Summary: As a representative electrochemical energy storage device, supercapacitors (SCs) have higher energy density than traditional capacitors and better power density and cycle life than lithium-ion batteries, making them extensively used in energy storage. However, there is a lack of understanding of the thermal behaviors and thermal management systems of SCs, which this review aims to address. The review introduces the energy storage mechanisms of SCs and current investigations of thermal behaviors, including heat generation rates, experimental methods, heat generation rate models, and thermal runaway. It also provides an overview of current efforts in different cooling systems and discusses the challenges and future work directions for SCs in thermal behaviors and thermal management systems.
Article
Engineering, Environmental
Wenpin Wei, Lei Wang, Chu Liang, Wenjie Liu, Chen Li, Yabin An, Lixing Zhang, Xianzhong Sun, Kai Wang, Haitao Zhang, Xiong Zhang, Yanwei Ma
Summary: This study investigates the feasibility of using cobalt selenide as an anode material in lithium-ion capacitors and successfully designs a heterostructure with nitrogen-doped graphene to stabilize the electrode structure. The experimental results show that the electrode exhibits excellent cycle performance and rate performance, and the assembled lithium-ion capacitors also have high energy/power density and exceptional long-term stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Chen Li, Yabin An, Lei Wang, Kai Wang, Xianzhong Sun, Fangyuan Su, Xiong Zhang, Yanwei Ma
Summary: This study employed first-principles calculations to elucidate the potassiation reaction pathways and phase transformation mechanisms in SnS2, and predicted its high theoretical capacity. The findings provide important guidance for the architectural evolution and potassium storage chemistry in TMDs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Review
Electrochemistry
Yuanfei Wang, Keliang Zhang, Jijun Feng, Xianzhong Sun, Chen Li, Kai Wang, Xiong Zhang, Yanwei Ma
Summary: This article briefly introduces the principle and structural design of supercapacitive swing adsorption (SSA), and analyzes the factors influencing SSA performance from multiple aspects, with emphasis on electrode materials. This method can be used for carbon dioxide adsorption, which is of great significance for addressing global climate issues.
BATTERIES & SUPERCAPS
(2023)
