JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zunbin Duan,Xiaoxiao Feng,Gengchang Lai,Danni Liu,Xiaoyi Zhang,Haoyu Wang,Shuen Chen,Xingchen He,Zihui Liu,Liping Tong,Huaiyu Wang,Xue-Feng Yu,Jiahong Wang
Phosphorus anode has shown great potential for the high-rate and high-energy–density lithium-ion batteries. Nevertheless, it still suffers from possible electrode cracking, ion-transport restrictions, and active-particle decomposition resulting from repeated alloying/de-alloying. To address the aforementioned issues, a nitrogen-doped flower-like porous phosphorus (f-P) sphere has been developed. The abundant micro-mesopores facilitate ion diffusion and enhance the internal bonding strength of the electrode. Concurrently, the doped nitrogen promotes the generation of a favorable solid electrolyte interphase constructed by fast-ion-conductors. As a result, the f-P exhibits a high-rate capacity of 735mAh g −1 at 20 A g −1 and maintains high Coulombic efficiencies over 900 cycles at 10 A g −1 . Furthermore, coin full-cells comprising the f-P anode and lithium cobalt oxide cathode demonstrate stable operation at a high current density of 6 mA cm −2 . The combination of a porous structure and doping strategy represents a viable approach for strengthening the durability of electrodes and optimizing the ion transport kinetics of advanced alloy anode materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Tianyu Zhu,Cuiping Yu,Yang Li,Rui Cai,Jiewu Cui,Hongmei Zheng,Dong Chen,Yong Zhang,Yucheng Wu,Yan Wang
Li 2 O-2B 2 O 3 (LBO) ionic conductor with high conductivity plays an important role in boosting the rate performance and cycling stability of Li 4 Ti 5 O 12 (LTO) anode for lithium-ion batteries by preventing direct exposure of LTO to the electrolyte. Herein, the effect of LBO coating layer on lithium ion (Li + ) storage performance is investigated in detail by adjusting the adding amount of LBO precursor dispersion. LTO coated with 2 wt% LBO achieves an optimum performance with a specific capacity of 172.9 mA h g −1 at a current density of 0.1 A g −1 , an improved rate capability (specific capacity of 127.9 mA h g −1 is maintained when the current density is 20 times than 0.1 A g −1 ) and a remarkable cycling stability (capacity retention of 94.2% after 4000 cycles at 2.0 A g −1 ). These LBO-LTO composites are competitive and promising candidates for electrochemical energy storage and other applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemElectroChem
·
2020
·Vol. 7
·期 9
·2184-2189
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IF 4.154
Shijie Zhou,Jia Li,Licai Fu,Jiajun Zhu,Wulin Yang,Deyi Li,Lingping Zhou
Graphical A joint effort : Black phosphorus is supported on porous carbon in a bonded form through a simple solvothermal reactions. The resulting composites are far superior to pure carbon in terms of rate and cycle performance in Li-ion batteries. Its economic applicability is also higher than that of phosphorus-based materials. Black phosphorus (BP) has received wide attention due to its high theoretical capacity (2596 mAh g −1 ) and good electron mobility, but its cyclic stability is poor. Meanwhile, it can be complementary to carbon material, which has low theoretical capacity but good cycle stability. In this work, we use solvothermal reaction to modify hard carbon materials with black phosphorous (BP). When used as anode material for lithium-ion batteries, the composite will show a higher specific capacity, cyclic stability and rate performance. It shows a high reversible capacity of 350 mAh g −1 after 1000 cycles at 1000 mA g −1 current density. But for pure carbon, it only shows a general reversible capacity of 180 mAh g −1 . Here, the lower content of black phosphorous and the use of hard carbon materials make the material more economically advantageous. And it can be used as an ideal material for cycling at high currents in the future.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
SOLID STATE IONICS
·
2020
·
IF 3.107
Yuanyu Wang,Wenjun Zhu
Herein, porous Li 4 Ti 5 O 12 has been prepared by a facile sol-gel process with poly(ethylene oxide) used as a phase separation inducer, which presents a novel micro/nano structure with micro-sized secondary structure (2–5 μm) constructed by many interconnected nano-sized primary components (30–60 nm). As an anode material for lithium ion batteries , the as-prepared Li 4 Ti 5 O 12 exhibits good cycling stability and rate capability, which could be attributed to the unique porous micro/nano structure.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Energy Technology
·
2017
·Vol. 6
·期 9
·1660-1666
·
IF 2.789
Yinlong Zhou,Peigen Zhang,Yan Sun,Yuhua Shen,Anjian Xie
A facile, efficient and short-time shearing method was developed to synthesize TiO 2 precursor, then followed by calcining in NH 3 gas to obtain nitrogen-doped carbon coated TiO 2 (TiO 2 / N -C) successfully. Interestingly, the prepared TiO 2 / N -C nanospheres were assembled by many tiny nanoparticles (NPs) and possessed rough surface. When used as an anode material, the TiO 2 / N -C exhibited reversible specific capacity of 277 mA h g −1 after 220 cycles at the current density of 0.6 C, indicating the superb cycle stability of TiO 2 / N -C. And a good rate capability at different current densities was also obtained. The excellent performance of the TiO 2 / N -C was due to the nitrogen-doped carbon and assembly structure, which could enhance the electrical conductivity and buffer the volume expansion during the charge and discharge process. Furthermore, the tiny NPs can short the transportation path of lithium ions and the gaps produced between connective tiny NPs could accommodate the volume change. So, the method of high speed shearing has great potential in synthesizing other anode materials for lithium ion batteries.
研究领域:
材料科学
·
电化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 55
·期 3
·1148-1156
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IF 3.442
Chen He,Yu Lanyong,Lin Zifeng,Zhu Qizhen,Zhang Peng,Qiao Ning,Xu Bin
MXenes are 2D transition metal carbides or nitrides with high electrical conductivity that have attracted great attention as promising electrode materials that supersede carbon-based material designed for supercapacitors. However, the aggregation and self-restacking of MXene 2D nanosheets limit their high-rate performance. In this work, flexible and conductive Ti 3 C 2 T x MXene/carbon nanotubes (CNTs) composite film was prepared through a simple vacuum filtration of the Ti 3 C 2 T x MXene and CNTs suspension mixture. The CNTs integrated MXene nanosheets can effectively prevent the restacking while creating fast ion transport channels for enhanced capacitance. The designed films exhibit excellent performance as supercapacitor electrodes with high capacitance of 300 F g −1 at 1 A g −1 with superior rate performance of 199 F g −1 even at 500 A g −1 , together with excellent cyclic stability of 92% capacitance retention after 10000 cycles at 20 A g −1 . The excellent workability demonstrates potential application of the system for flexible, portable and highly integrated supercapacitors.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
IONICS
·
2023
·Vol. 29
·期 8
·3001-3012
·
IF 2.8
Tang Haoqing,Zhao Siying,Weng Qiang,Liu Tao,Tang Zhiyuan,Liu Xiaotong
A novel strategy to improve the ionic conductivity of the Li 2 ZnTi 3 O 8 (LZTO) anode is proposed by embedding exfoliation and exchange of Li + montmorillonite (MMT) in LZTO particles. Li 2 ZnTi 3 O 8 and montmorillonite (LZTO-MMT) composites are shown to induce not only a high concentration of Li + in the interlamellar channel of MMT but also a reduction in the distance for Li + migration to ensure fast and stable Li + diffusion kinetics. Furthermore, the thus obtained LZTO and 6 wt% MMT (LZTO-6MMT), composed of fast Li + conductor MMT, exhibits increased Li + conductivities, excellent high-rate Li + storage capacities, and significant improvement in cycle reversibility. The LZTO-6MMT electrode delivers 219.6 mAh g −1 at a current density of 1.0 A g −1 after 500 cycles and shows an excellent high-rate performance of 127.8 and 112.0 mAh g −1 over 2000 cycles at 5.0 and 10.0 A g −1 , respectively. X-ray photoelectron spectroscopy and ex situ Raman spectrum analyses suggest that the chemical bonds and crystal structure remain stable after multiple Li + intercalation/deintercalation processes. To the best of our knowledge, this is the first report on the introduction of fast-ion conductor MMT into LZTO and its application to lithium-ion batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2018
·
IF 13.709
Ting He,Jianrui Feng,Jiajia Ru,Yutong Feng,Ruqian Lian,Jinhu Yang
Interfacial engineering plays an important role in tuning the intrinsic property of electrode materials for energy applications such as lithium-ion batteries (LIBs), which however is rarely realized to amorphous electrode materials, despite a set of characteristics of amorphous materials desirable for LIBs. Here, Au atomic cluster layer-interfaced amorphous porous CoSnO3 nanocubes were fabricated by galvanic replacement and employed as a superior LIB anode, showing high reversible capacity (1615 mAh g–1 at 0.2 A g–1), good rate capability (1059 mAh g–1 with a 61.3% capacity retention upon the dramatic current variation from 0.1 to 5 A g–1), and excellent cycling stability. The amorphous nature, interconnected mesopores, and especially the thin Au atomic cluster layer on the surface/pore walls of CoSnO3 nanocubes can not only improve electron transport and ion diffusion in the electrode and electrolyte but also release the volume strain. Most significantly, density functional theory calculations reveal that the CoSnO3∥Au heterointerface can induce the atomic polarization of CoSnO3 and lower Li ion diffusion barriers in CoSnO3 near the heterointerface, endowing it with a significantly enhanced theoretical lithium storage capacity and outstanding rate capability. This study provides a model of a heterointerface for amorphous materials with desired properties for high-performance LIBs and future energy applications.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RARE METALS
·
2022
·Vol. 41
·期 8
·2645-2654
·
IF 6.318
Cheng Shu-Ling,Yin Xiu-Ping,Sarkar Samrat,Wang Zhen-Wei,Huang Qiu-An,Zhang Jiu-Jun,Zhao Yu-Feng
Anode materials of lithium-ion batteries (LIBs) endowed with high-rate performance and fast charging capability are crucial for future energy storage systems. Here, Mo 8.7 Nb 6.1 O x @NCs (nitrogen-doped carbon nanotubes, NCs) egg-nest structure synthesized by an in-situ solvothermal method is reported. The Mo 8.7 Nb 6.1 O x @NCs egg-nest exhibits high embedding potential, high pseudo-capacitance contribution rate (87.5%), and low charge transfer resistance. The electrochemical results show that Mo 8.7 Nb 6.1 O x @NCs demonstrates excellent rate performance (reversible capacity of 196.8 mAh·Ag −1 at 10 A·Ag −1 , and full charging only takes 1.1 min) and excellent cycle stability (reversible capacity of 513 mAh.Ag −1 at 0.5 A.Ag −1 combined with a capacity loss of only 5.4% after 100 cycles), outperforming the state-of-the-art literature. The full cell is assembled with Mo 8.7 Nb 6.1 O x @NCs as the anode and LiFePO 4 as the cathode, which can provide a remarkably high energy density of 731.9 Wh·kg −1 , indicating its excellent prospect for practical applications. Graphical abstract
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Kaite Peng,Xiaoyan Wang,Zhiyong Wang,Xianbo Jin
Advanced thermal batteries require new cathode materials with high thermal stability, high capacity, high voltage, and high-rate performance. Although antimony sulfide (Sb 2 S 3 ) has a high theoretical capacity, its low melting point characteristic hinders the application in thermal batteries. Here, we demonstrate that modifying with a small amount of graphite can effectively immobilize liquid Sb 2 S 3 to form a pellet electrode, which allows us to use cathodes made of this liquid active material just like traditional solid-state electrodes. The formation of such a solid-like liquid cathode can be attributed to graphite's affinity for Sb 2 S 3 while repelling the molten electrolyte. The electrochemical testing in LiCl-KCl eutectic at 560 °C and 600 °C indicates that, the performance of the graphite modified Sb 2 S 3 (gra@Sb 2 S 3 ) of optimized proportions far surpasses that of traditional FeS 2 , both in terms of discharge capacity and thermal stability. This study provides a strategy for developing new kind of liquid cathode materials for high-performance thermal batteries.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Gaobang Chen,Yong Fan,Tianhui Yu,Muhammad Shoaib,Azim Khan,Yifan Liu,Xian Jian
The practical application of high-rate lithium/fluorinated carbon (Li/CF x ) primary batteries faces challenge of relatively slow electrode reaction kinetics limited by inert C-F bond and strong polarity. Herein, an effective microwave-induction strategy was developed to regulate C-F bond for 80C high-rate Li/CF x battery with suppressed polarization. The as-mentioned microwave method was carried out in the alcohol-based solvent for uniformly modify CF x , including precise defluorination, C-F bond regulation, surface functional groups and carbon quantum dots. Precise defluorination contains the conversion of C-F bond to semi-ionic C-F bond while preserving C-F 2 and C-F 3 . During the process of C-F bond regulation, hydroxyl groups is grafted onto the surface of CF x to increase the wettability and electronegativity of the electrode. Compared with raw CF x , the Li/CF x batteries using microwave-modified CF x achieved high discharge rate of 80C possessing a high power density of 134.091 kW/kg. In addition, the optimal Li/CF x battery possesses a large specific capacity increase ratio of 142.6 % at 50C. This microwave-induction approach for modifying CF x in ethanol-based solvent provides a facile and effective pathway to design high-rate Li/CF x battery.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Yifei Chen,Meng Li,Qin Zhu,Wei Bai,Xiaofang Liu,Mingwu Xiang,Junming Guo,Jintao Liu
The Jahn-Teller effect and Mn dissolution always restrict the practical electrochemical properties of spinel LiMn 2 O 4 cathode material. Herein, a low-temperature solid-state combustion method is employed to synthesize various truncated octahedral LiZn 0.03 Al x Mn 1.97- x O 4 ( x ≤ 0.08) with submicron structure. The Zn/Al dual-doping is conducive to forming {110} and {100} planes, and is also beneficial to the crystal development of LiMn 2 O 4 . It is found that as the amount of Al doping increases, the average particle size gradually decreases from 188 nm to 113 nm. In addition, the Zn/Al co-doping integrated with small particles can improve the high-rate performance. The optimal LiZn 0.03 Al 0.03 Mn 1.94 O 4 exhibits submicron truncated octahedral morphology, high crystallinity , and good particles dispersibility . Benefiting from these structure merits, the LiZn 0.03 Al 0.03 Mn 1.94 O 4 delivers the first discharge capacity of 113.1 mAh⋅g −1 and low capacity fade of 9.9 % after 300 cycles at 1C. It also shows the high first discharge capacity of 86.6 mAh⋅g −1 at 10C and the high capacity retention of 72.1 % after 2000 cycles. Even at ultrahigh current density of 15C and 20C, the ultralong cycling lifespans over 2000 cycles are also achieved in LiZn 0.03 Al 0.03 Mn 1.94 O 4 cathode material. The excellent electrochemical properties are ascribed to its relatively high Li + diffusion coefficient (1.60 × 10 −11 cm 2 ⋅s −1 ) and low apparent activation energy (25.45 kJ⋅mol −1 ) during the de-intercalation process. The Zn/Al dual-doping and submicron truncated octahedron designs of the LiMn 2 O 4 provide a scientific reference to prepare high-performance cathode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）