Article
Chemistry, Physical
Shanshan Xiao, Yichuan Zhang, Xianggang Zhou, Xuning Leng, Yingqi Li, Fei Bi, Li Zhao, Liyan Wang, Guangqing Gai, Yangguang Li
Summary: Magnetic transition-metal oxides are promising alternatives to carbonaceous substances as anode materials for lithium ion batteries due to their high theoretical capacity. However, their poor electronic conductivity and severe agglomeration of nanoparticles during discharging adversely affect their electrochemical performance. In this study, a 3D spatially-confining magnetic anode with carbon encapsulated Fe3O4 nanoparticles anchored onto 3D nickel nanotube arrays skeleton is demonstrated. The anode exhibits high-capacity lithium storage and excellent rate/cycle capability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Geon Hae Lim, Dae-Yeon Song, Min ju O, Yun Chan Kang, Jae-Won Lee, Kwang Chul Roh
Summary: This study synthesized a silicon-carbon composite anode for lithium-ion capacitors using byproducts from the biorefinery process. The composite anode exhibited high gravimetric capacity, high energy density, and good cycling performance. The research contributes to the development of sustainable energy storage devices.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Electrochemistry
Lu Yu, Zhihao Xiong, Wenyuan Zhang, Donghua Wang, Haofeng Shi, Chengdeng Wang, Xingxin Niu, Chong Wang, Lei Yao, Xiaoqin Yan
Summary: Among energy storage devices, lithium-ion capacitors (LICs) stand out due to their high energy densities and power densities. However, the mismatch in storage mechanisms between the positive and negative materials limits the performance of LICs. In this study, a Sn-based heterostructure@MXene anode material was synthesized to achieve excellent rate performance and increased lithium storage capacity, leading to a better match with the cathode. The hybrid electrode demonstrated remarkable rate performance and cycle stability, reducing the kinetic gap with capacitor-type cathodes. Assembled LICs based on this hybrid anode and nitrogen-doped activated carbon cathode exhibited high power/energy density and long cycling life.
ELECTROCHIMICA ACTA
(2022)
Review
Chemistry, Multidisciplinary
Chenxiao Chu, Rui Li, Feipeng Cai, Zhongchao Bai, Yunxiao Wang, Xun Xu, Nana Wang, Jian Yang, ShiXue Dou
Summary: Sodium metal anodes have high theoretical capacity and low redox potential, but face challenges such as dendrite growth. Using skeleton materials is an effective strategy to reduce local current density, inhibit dendrite growth, and alleviate volume expansion in sodium metal anodes.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Hongjung Kim, Jinhyuk Baek, Dong-Kyu Son, Michael Ruby Raj, Gibaek Lee
Summary: This paper presents a study on silicon nanoparticles-encapsulated hollow porous carbon nanocubes as anode materials for lithium-ion batteries. The materials exhibit excellent reversible capacity, rate capability, and cycling stability, addressing the challenge of structural pulverization in silicon-based anodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Tian Liang, Zhifei Mao, Lingyao Li, Rui Wang, Beibei He, Yansheng Gong, Jun Jin, Chunjie Yan, Huanwen Wang
Summary: A necklace-structured composite membrane consisting of micron-sized FeSe2 cubes threaded by carbon nanofibers is reported as an electrode with fast charging capability and long-term cycling stability. The flexible lithium-ion capacitor (LIC) fabricated using this electrode exhibits impressive energy and power densities.
Article
Chemistry, Physical
Huanwen Wang, Dongming Xu, Ruyun Qiu, Shasha Tang, Shuai Li, Rui Wang, Beibei He, Yansheng Gong, Hong Jin Fan
Summary: Sodium-ion capacitors have attracted attention for integrating high-energy battery and high-power capacitor using abundant sodium resources. By growing sodium titanate arrays on conductive carbon nanofiber networks, fast sodium storage is achieved, with nanobelts showing higher specific capacity and better rate performance compared to nanowires. This difference is attributed to their different kinetics in ion/charge transport.
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)
Review
Materials Science, Multidisciplinary
Jianfeng Wen, Xianwen Pan, Hong Fu, Bingang Xu
Summary: Coupling an electrochemical energy storage system with tribo-electric nanogenerators as self-charging power cells has attracted attention in the area of low-cost and sustainable energy technology research. This review discusses the advancement of self-charging power cells conforming to different energy storage systems and presents solutions to the main challenges, including building a DC-based triboelectric energy harvesting system, applying a high-efficiency power management circuit, developing low self-discharge current, proposing structure-and-performance-matching design, and exploring frontier application scenarios. This review highlights the significance of self-charging power cell technology and provides a guideline for future development and application of self-charging energy storage systems.
Article
Chemistry, Multidisciplinary
Jujun Yuan, Haishan He, Xiaofan Li, Yunfei Gan, Meiqi Mu, Huajun Yu, F. Kuang, Xiaokang Li, Xianke Zhang, Jun Liu
Summary: Nb2O5/C submicrostructures were fabricated and exhibited improved electric conductivity, reaction kinetics and rate property for LIB anodes, resulting in outstanding electrochemical performance.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Review
Chemistry, Physical
Xu Han, Shuhao Zhou, Huan Liu, Huitao Leng, Sheng Li, Jingxia Qiu, Fengwei Huo
Summary: This article reviews the storage mechanism of sodium ions in noncrystalline carbon (NCC) and evaluates the structure-behavior relationship between sodium-ion storage and the carbon structure.
Article
Chemistry, Multidisciplinary
Chen Zhang, Xing Liu, Zhen Li, Chenying Zhang, Zhiwen Chen, Dengyu Pan, Minghong Wu
Summary: A novel accordion-like structure of soft carbon (ASC) was constructed by removing the skin-like carbon film and incorporating nitrogen-doped graphene quantum dots (N-GQDs) for enhanced potassium-ion storage. The ASC exhibited excellent performance with high reversible capacity, rate capability, and cycle stability after N-doping type regulation, suggesting its potential for high-performance potassium-ion hybrid capacitors (PIHCs).
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Energy & Fuels
Jacob Strimaitis, Clifford F. Denize, Sangram K. Pradhan, Messaoud Bahoura
Summary: Prelithiation has a significant impact on the electrochemical performance of lithium-ion batteries and hybrid supercapacitors (HSC). This study investigates HSCs made with prelithiated porous CaFe2O4 (pCFO) anodes at different degrees. Prelithiation affects the anode morphologies and compositions predictably, but has a more stochastic influence on HSC performance. Surprisingly, pCFO-based HSCs show competitive energy and power density, as well as long-term cycling stability, indicating that pCFO may be a promising candidate for next-generation HSCs.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Sipeng Jiang, Qianqian Ji, Shilin Yun, Zhiqiang Zhang, Qingsong Jiang, Hai Chao Chen
Summary: Microstructures of hard carbon spheres have been tuned by annealing at different temperatures to optimize their Li+ storage performance. The sample annealed at 650 degrees C shows the best performance for Li+ storage with high specific capacity, stable cycling stability, and superior rate performance.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Lei Yang, Yineng Zhao, Yiqun Zhang, Chunliu Zhu, Wei Wang, Jing Shi, Shuai Liu, Jingwei Chen, Minghua Huang, Jingyi Wu, Huanlei Wang
Summary: Hollow porous bowl-like hard-soft carbon hybrid materials (BHSCs) were synthesized using an in situ hard-template strategy. The outer and inner walls of the hard carbon bowls were wrapped by graphene-like soft carbon, resulting in improved electron transport and potassium-ion insertion. The BHSC anode showed excellent rate capability and cycle stability, and was used to assemble a potassium-ion hybrid capacitor with high energy/power density and outstanding capacity retention.
Article
Chemistry, Physical
Junsheng Zheng, Ningning Dai, Shiyao Zhu, Yuan Gao, Licheng Ye, Jianxin Ma, Jim P. Zheng
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Electrochemistry
Liming Jin, Ruiqi Gong, Junsheng Zheng, Cunman Zhang, Yongyao Xia, Jim P. Zheng
Article
Chemistry, Analytical
Xin Guo, Ruiqi Gong, Nan Qin, Liming Jin, Junsheng Zheng, Qiang Wu, Jim P. Zheng
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Junsheng Zheng, Nan Qin, Liming Jin, Xin Guo, Chao Shen, Qiang Wu, Jim P. Zheng
CHINESE CHEMICAL LETTERS
(2020)
Article
Chemistry, Physical
Liming Jin, Xin Guo, Chao Shen, Nan Qin, Junsheng Zheng, Qiang Wu, Cunman Zhang, Jim P. Zheng
JOURNAL OF POWER SOURCES
(2019)
Article
Chemistry, Physical
Liming Jin, Jie Ni, Chao Shen, Fenglai Peng, Qiang Wu, Donghao Ye, Junsheng Zheng, Gaoran Li, Cunman Zhang, Zhoupeng Li, Jim P. Zheng
JOURNAL OF POWER SOURCES
(2020)
Article
Chemistry, Multidisciplinary
Jianmin Yuan, Nan Qin, Yanyan Lu, Liming Jin, Junsheng Zheng, Jim P. Zheng
Summary: In this study, the effects of three electrolyte additives on the rate performance of the hard carbon anode of a lithium-ion capacitor (LIC) at different temperatures were evaluated. The results showed that the cell containing fluoroethylene carbonate (FEC) exhibited the best rate performance at various temperatures and maintained charge and discharge capability even at -40 degrees C.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Physical
Nan Qin, Liming Jin, Yanyan Lu, Qiang Wu, Junsheng Zheng, Cunman Zhang, Zonghai Chen, Jim P. Zheng
Summary: This study demonstrates an over-potential tailored Li2CO3 growth mechanism and its importance in stabilizing lithium-ion batteries. By increasing the over-potential, the size of Li2CO3 decreases, leading to the formation of a thin and dense inorganic layer that provides low self-discharge behavior and fast kinetic rate.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Junsheng Zheng, Yuhang Peng, Runlin Fan, Jing Chen, Zize Zhan, Dongmei Yao, Pingwen Ming
Summary: This study comprehensively investigated the influence of conductive filler on the properties of graphite composite bipolar plates in order to balance conductivity and flexural strength. Phenolic resin was used as the binder, natural flake graphite as the conductive substrate, and different functional carbon materials as auxiliary fillers. The results showed that the particle size of the conductive substrate significantly affected the conductivity enhancement of the auxiliary filler. Furthermore, the effects of various auxiliary filler concentrations on improving electrical conductivity and flexural strength were examined. This research has significant implications for achieving a balance between electrical conductivity and flexural strength in graphite composite bipolar plates.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Physical
Nan Qin, Liming Jin, Guangguang Xing, Qiang Wu, Junsheng Zheng, Cunman Zhang, Zonghai Chen, Jim P. Zheng
Summary: Developing high-capacity electrodes requires accurate evaluation of electrochemical behaviors under increasing current density. The polarization at the lithium counter electrode has become a barrier for accurate evaluation of battery electrodes. In this study, the impact of the lithium counter electrode was minimized by decoupling the electrochemical behavior of high-capacity electrodes using a single-channel three-electrode vehicle. The accurate evaluations revealed excellent rate capability and stable cycling performance of the high-capacity graphite electrode.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Dongmei Yao, Cong Feng, Liming Jin, Junsheng Zheng, Runlin Fan, Pingwen Ming
Summary: Graphite/epoxy resin (G/EP) composites are widely used in fuel cell bipolar plates due to their excellent electrical and mechanical properties. However, the mechanical strength of these composites is significantly reduced due to inadequate bonding interface between graphite and epoxy resin. This study used molecular dynamics simulations to investigate the influence of graphite surface functionalization on the interfacial structures of composites. The results showed that functionalization of the graphite surface increased the interface thickness of the composite, attributed to interdiffusion and hydrogen bond formation. Additionally, the adsorption rate of graphite to the epoxy resin significantly improved after functionalization. These findings contribute to a better understanding of the microscopic process of interface formation in G/EP composites and provide guidance for improving the interface bonding and mechanical strength of composite bipolar plates.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Li-Ming Jin, Guang-Guang Xing, Nan Qin, Yan-Yan Lu, Jun-Sheng Zheng, Cun-Man Zhang, Jim P. Zheng
Summary: In this study, an empirical energy density model was established to evaluate the effects of electrode thickness on the energy density of different types of batteries, with the finding that increasing electrode thickness is an effective way to improve energy density.
Review
Electrochemistry
Junsheng Zheng, Guangguang Xing, Luyao Zhang, Yanyan Lu, Liming Jin, Jim P. Zheng
Summary: The paper discusses the challenges and attempts regarding lithium-ion capacitors (LICs), emphasizing the importance of selecting appropriate anode structures and optimizing solid-electrolyte interface (SEI) for performance enhancement.
BATTERIES & SUPERCAPS
(2021)
Article
Chemistry, Physical
Liming Jin, Ruiqi Gong, Weichao Zhang, Yue Xiang, Junsheng Zheng, Zhonghua Xiang, Cunman Zhang, Yongyao Xia, Jim P. Zheng
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Physical
Liming Jin, Junsheng Zheng, Qiang Wu, Annadanesh Shellikeri, Steven Yturriaga, Ruiqi Gong, Jun Huang, Jim P. Zheng
MATERIALS TODAY ENERGY
(2018)