Article
Chemistry, Physical
Yue Peng, Hongxin Liu, Yunfeng Li, Yan Song, Chengwei Zhang, Gongkai Wang
Summary: The study successfully enhanced the energy/power densities and cycle stability of lithium-ion hybrid capacitors (LICs) by optimizing the anode structure.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Environmental
Dongdong Liu, Zengyan Wei, Liming Liu, Hong Pan, Xiaoming Duan, Long Xia, Bo Zhong, Huatao Wang, Dechang Jia, Yu Zhou, Xiaoxiao Huang
Summary: An effective strategy of anchoring ultrafine and high content SnO2 nanoparticles in ordered mesoporous carbon framework is proposed to improve the reversible capacity and sluggish reaction kinetics of SnO2-based anodes in lithium ion batteries. The ultrafine SnO2 and ordered mesoporous structure shorten diffusion distance of Li+ and enhance conversion reaction of SnO2, leading to high reversible capacity and excellent rate capabilities. The elaborately designed SnO2@OMC anodes exhibit stable capacity even after assessment of rate capability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Xiao Bai, Hui Zhang, Junpin Lin
Summary: This study explores the use of conducting polymers as both a conductive agent and binder in silicon anodes. By utilizing polyaniline (PANI) as a three-dimensional bridge, it is possible to maintain constant electric connectivity with silicon, even during long-term cycling. The research also demonstrates the improvement of Li-ion diffusion kinetics and cycling properties through low-temperature sintering of double-protected silicon nanoparticles (SiNPs) without damaging the PANI conductive skeleton. The novel composite material, Si@C/PANI-CNT, exhibits excellent discharge capacity and stability over multiple cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Junkai Zhao, Mingzhu Xie, Kaimeng Yang, Daina Wei, Ce Zhang, Zhaolong Wang, Xiaojing Yang
Summary: In this study, a three-dimensional silicon anode with multiple protection strategies was proposed, including citric acid-modification of silicon particles, GaInSn ternary liquid metal addition, and porous copper foam based electrode. This design effectively mitigates the volume change of silicon anode during lithiation/delithiation processes, improving the cycling stability and capacity retention rate of the battery.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Caili Yang, Yixin Ran, Chenxi Gao, Zuyong Wang, Yuan-Li Ding
Summary: Li3VO4 is a promising intercalation anode material for lithium-ion batteries, but it has poor electronic conductivity. To address this issue, researchers developed a self-template strategy to construct 3D hierarchical Li3VO4/C hybrids, which show efficient electron/ion transport system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Multidisciplinary
ShouJie Guan, QingLu Fan, LiYing Liu, JunCai Luo, YiCheng Zhong, WeiMin Zhao, ZhenCai Huang, ZhiCong Shi
Summary: A three-dimensional hierarchical Ca3Co4O9 hollow fiber network with excellent cyclic stability and rate performance was successfully prepared in this study, outperforming commercial Co3O4. The unique structure provides shorter ion transport distances and higher electrical conductivity, contributing to the enhanced electrochemical performance of transition metal oxides for lithium ion batteries.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2021)
Article
Chemistry, Physical
Wenshuai Lang, Chuang Yue, Man Dang, Gang Wang, Yimin Chen, Fang Hu, Zhiming Liu, Jie Shu
Summary: Three-dimensional graphene networks were successfully fabricated on nickel foam using chemical vapor deposition technique, followed by the deposition of amorphous Ge layer using radio frequency magnetron sputtering method. The Ge-decorated graphene networks exhibited improved electrochemical performance as anodes for lithium-ion batteries compared to directly coated two-dimensional Ge nanoelectrodes on bare Ni foam. The optimized 3D Ge@Gr hybrid electrode achieved significantly enhanced electrochemical cyclability for 1500 long-term cycles under higher current density of 1.2 mA cm-2. The interconnected 3D graphene with enlarged surface area effectively buffered the volume change of the Ge anode and improved electrical/ionic conductivity, resulting in superb stable cyclability.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Di Zhang, Weiwei Su, Zhaojin Li, Qiujun Wang, Fei Yuan, Haitao Sun, Yazhao Li, Yan Zhang, Bo Wang
Summary: Graphite anode has limitations in capacity for lithium-ion batteries. Therefore, it is important to explore novel carbon anodes with high capacity, high-rate properties, easy accessibility, and environmental benignity. In this study, three-dimensional interconnected porous carbon nanoflakes were successfully constructed and showed excellent electrochemical performance, which could promote the development of high-performance carbon anodes for lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yao Liang, Yuxing Gao, Qingyun Shi, Dongming Yin, Hui Lu, Yong Cheng, Hongjin Xue, Chunping Hou, Chunli Wang, Limin Wang
Summary: SiOx material shows promise as anode material for high-energy Li-ion batteries, but its practical application is limited by poor cycling stability. In this study, a 3D-SiOx @CNTs/C composite is created using in-situ chemical vapor deposition, providing a higher lithium storage capacity retention of about 99.8% after 450 cycles compared to conventional carbon-coated strategy. The bifunctional conductive network offers a smooth conduction path, counteracting volumetric strain. This work offers an innovative strategy for preparing CNTs-modified functional materials and accelerating the application of high-capacity SiOx/C anode in practical batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Peidian Chong, Ziwang Zhou, Yafeng Li, Jianbiao Wang, Jieying Xiu, Mingdeng Wei
Summary: A three-dimensional (3D) structure of SnS2 with sulfur vacancies (S-SnS2) anchored on the surface of reduced graphene oxide (rGO) was synthesized. The addition of glycolic acid promoted the bonding of SnS2 with rGO and enabled the generation of sulfur vacancies. The unique 3D structure facilitated lithium-ion diffusion and the S/N-doped rGO (NSG) enhanced the electronic conductivity of the S-SnS2/NSG. As a result, the S-SnS2/NSG exhibited a high capacity and ultrastable long cycling performance in lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Dan Wang, Qun Ma, Xiao Li, Yihang Yu, Zhiyuan Wang, Yanguo Liu, Chunli Liu
Summary: A three-dimensional porous composite of Ti3C2Tx@SiO2 was fabricated with optimal composition, exhibiting superior cycle performance and rate performance compared to pure SiO2 and MXene.
The excellent electrochemical performance can be attributed to the synergistic effect of ultrafine SiO2 nanoparticles and three-dimensional porous Ti3C2Tx, which can shorten the Li+ transport pathway, accelerate electron transfer, and relieve the stress caused by the volume expansion of SiO2.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Mingqiang Qi, Jiawei Long, Yingyi Ding, Xinya Diao, Yijing Meng, Linlin Wang, Zeng Pan, Jinyun Liu
Summary: Combining hollow yolk-shell structure and surface modification is an effective strategy to enhance the performance of lithium-ion battery anodes. The use of a nanosheets-coated multiple-layered SnO2@NiMoO4 composite demonstrates the synergistic effect between multi-layered SnO2 microspheres and NiMoO4 nanosheets, leading to improved electrochemical properties. The reversible capacity of the SnO2@NiMoO4 anode is competitive and shows potential for developing high-performance Li-ion battery systems.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Ji Ma, Yuankun Li, Xiaojie Wei, Chunting Liu
Summary: Reduction roasting strategy was employed to transform hematite into powerful anode materials to store Li+, Na+, and K+ ions, constructing a porous structure to enhance ion accessibility. The newly-designed anodes were tested for storage capacity, cycling stability, and rate performances, while cyclic voltammetry curves and electrochemical impedance spectra were measured to unveil ion-storage mechanisms.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Hyung-Seok Lim, Won-Jin Kwak, Dan Thien Nguyen, Wei Wang, Wu Xu, Ji-Guang Zhang
Summary: Metal-oxygen batteries (MOBs) are promising for energy storage due to safety, low cost, and high energy density. However, the accumulation of discharge products during the oxygen reduction process can hinder the flow of active species, leading to increased impedance and shortened cycle life. A 3D-SOM structure of ruthenium/single-walled carbon nanotubes air electrode is shown to mitigate these effects and enhance the performance of MOBs.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Xinxin Sun, Zhiyuan Wang, Haohui Zhang, Kaize Si, Xiaomei Wang, Xu Zhang
Summary: In this study, a honeycomb-like SiOx/C nanoarchitecture with carbon coating based on a 3D ordered macroporous (3DOM) structure was developed. The carbon cladding buffers volume expansion and enhances electronic conductivity, resulting in high reversible capacity and good cycling stability in lithium-ion batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
