Article
Chemistry, Physical
Can Mi, Chang Luo, Zigang Wang, Yongguang Zhang, Shenbo Yang, Zhifeng Wang
Summary: A Cu/Ni co-doped Si-based anode material with a porous nanowire network structure is obtained through dealloying treatments. The porous structure allows the material to adapt to volume changes, and co-doping of Cu and Ni improves Li capture ability and electron migration rate. The material exhibits excellent electrochemical performance.
Article
Biochemistry & Molecular Biology
Yajing Yan, Yanxu Chen, Yongyan Li, Xiaoyu Wu, Chao Jin, Zhifeng Wang
Summary: In this study, a Si/Fe2O3-anchored rGO framework was successfully prepared as a LIB anode with outstanding electrochemical performance, including high reversible capacity and excellent cycling stability. The framework's high specific surface area and promotion of ions and electrons transmission contribute to its exceptional performance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Chao Jin, Zigang Wang, Chang Luo, Chunling Qin, Yongyan Li, Zhifeng Wang
Summary: In this study, NiFe2O4/NiO composites with a dual-network structure were fabricated using a simple dealloying method. The material, composed of nanosheet networks and ligament-pore networks, provides sufficient space for volume expansion and promotes the rapid transfer of electrons and Li ions. As a result, the material exhibits excellent electrochemical performance, retaining 756.9 mAh g(-1) after 100 cycles at a current density of 200 mA g(-1) and retaining 641.1 mAh g(-1) after 1000 cycles at a current density of 500 mA g(-1).
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Nanoscience & Nanotechnology
Yan Li, Guangyu Chen, Huaixiang Yang, Xiaobing Geng, Zhuo Luo, Chentong Zhang, Liuqing Huang, Xuetao Luo
Summary: The application of photovoltaic solid waste as an effective solution for waste disposal in lithium-ion batteries not only solves the problem of environmental pollution but also avoids the loss of secondary resources. A simple and environmentally friendly method was designed to synthesize P-Si@SiOx/Ag/CN as an anode material for lithium-ion batteries, which exhibited outstanding cycling performance and rate capability. This work opens up a new economic strategy for the fabrication of high-performance silicon anodes and affords a promising avenue for the recycling of PV silicon waste.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ji Zhou, Peng Huang, Qin Hao, Lina Zhang, Hong Liu, Caixia Xu, Jinghua Yu
Summary: Nanoporous Ge/Ag composite with a 3D porous structure exhibits superior lithium storage performances compared to pure Ge material, including higher reversible capacitance, optimized rate capability, and excellent cycling stability. The introduction of high-conductive Ag nanoparticles contributes to the enhanced performance, showing great potential as an advanced anode candidate for lithium ion batteries.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Energy & Fuels
Chang Luo, Zigang Wang, Yanxu Chen, Yanming Zhao, Qiqi Han, Chunling Qin, Zhifeng Wang
Summary: This study successfully prepared bimodal porous Ni@NiO nanowire networks by accelerating the solidification process of eutectic precursors. The networks have refined one-dimensional nanowire skeleton, abundant porous structure, and a large number of surface oxygen defects, which can effectively adapt to the volumetric variation of the electrode. Density functional theory computation confirms that oxygen vacancies play an important role in providing superior Li capture ability, enhancing electrical conductivity, and surface reactivity. The Ni@NiO-45 anode shows impressive cycling stability, delivering a reversible capacity of 697.9 mAh g(-1) after 100 cycles at a current density of 100 mA g(-1).
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Lei Li, Jie Deng, Lei Wang, Chunling Wang, Yun Hang Hu
Summary: Silicon, as a promising anode material for next generation lithium-ion batteries, was synthesized using a facile method based on dealloying reaction to create porous boron-doped silicon with low carbon content. This anode showed high initial Coulombic efficiency, excellent rate performance, and long cycle stability.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Qian Liu, Yaxin Ji, Ximeng Yin, Junwei Li, Yangjie Liu, Xiang Hu, Zhenhai Wen
Summary: A newly synthetic route using the Mg-thermal reduction method was developed to fabricate three-dimensional porous Si/C nano-architectures as anode material for high energy-density lithium-ion batteries. The nano-architectures demonstrate favorable properties and structure for stable solid-electrolyte interface, Li+ transport, and mitigating volume expansion effect.
ENERGY STORAGE MATERIALS
(2022)
Article
Engineering, Environmental
Wenbo Liu, Xue Chen, Jizhou Zhang, Shichao Zhang, Sanqiang Shi
Summary: Novel freestanding 3D hierarchical porous SnOx-decorated Ni3Sn2 composites were successfully synthesized in this study, achieving significantly improved Li storage performance when utilized as a binder-free integrated anode in lithium ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Applied
Shixiong Mei, Siguang Guo, Ben Xiang, Jiaguo Deng, Jijiang Fu, Xuming Zhang, Yang Zheng, Biao Gao, Paul K. Chu, Kaifu Huo
Summary: The study reports the use of SiN-coated porous Si as a high-performance anode for lithium-ion batteries. The SiN coating prevents volume expansion and pulverization, and also provides mechanical protection and accelerated ion transport, resulting in high capacity and stable performance.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Energy & Fuels
Shengnan Lin, Tingan Zhang
Summary: With the increasing demand for battery performance due to the advancement of mobile and portable electronic devices, anode materials, as an important factor affecting the electrochemical performance of lithium ion storage, have attracted widespread attention. This study provides a creative and effective approach to synthesize four different NiCo-MOFs materials. The electrochemical studies reveal that NiCo-EDTA and NiCo-BI demonstrate slower capacity decrease and excellent cycle performance compared to NiCo-PTA and NiCo-H3BTC.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Electrochemistry
Zhonggui Sun, Xuhui Ge, Weiwei Wu, Xingwang Shi, Jiansen Gu, Haosheng Jing, Jun Wang, Zhiya Zhang, Yangfan Lu
Summary: A facile synthesis method was used to obtain high-performance porous Si/TiO2 thin film electrodes, and the study found that amorphous TiO2 is more beneficial for the Li-ions transport kinetics.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Hao Li, Zidong Chen, Zhirong Kang, Wei Liu, Yungui Chen
Summary: This study presents stuffed high-density Si-C particles that are crack-resistant and exhibit highly reversible Li-storage performances. The particles consist of Si particles implanted into a dual-layered carbon matrix, allowing an intraparticle on-site voiding mechanism to prevent cracking and swelling. The resulting Si-C particles possess high density and low surface area, delivering improved capacity retention and energy density when paired with LiFePO4 cathodes.
ENERGY STORAGE MATERIALS
(2023)
Article
Engineering, Environmental
Si Yi, Zhilin Yan, Xingda Li, Zhen Wang, Pengpeng Ning, Jingwen Zhang, Jinlan Huang, Deren Yang, Ning Du
Summary: High-energy lithium-ion batteries (LIBs) with fast-charging technology are in great demand for portable electronics and electric vehicles. However, commercializing silicon (Si) as an anode material has been challenging due to its large volume change and poor conductivity. To address this issue, a high-Si-content Si/hard carbon composite has been designed, which effectively enhances lithium-ion diffusion and reaction kinetics. The composite exhibits a reversible capacity of 1124 mAh/g at 0.1C and maintains 87.4% capacity retention after 200 cycles at 1C. Pouch-type full-cell tests further demonstrate good cycling stability and high rate performance. This work provides a new approach for rational design of Si-based anode materials for high-energy and high-power LIBs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhiwen Wang, Dong Cao, Mingxi Ren, Hanning Zhang, Limei Pan, Chuanfang John Zhang, Jian Yang
Summary: A Si@Ti3C2Tx composite with a fluffy and porous structure was prepared using a simple suspension mixing-freeze drying process, which can effectively improve the stability and cycling efficiency of silicon nanoparticles in lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
