CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Shenghui Han,Gang Lian,Xu Zhang,Zhaozhen Cao,Qilong Wang,Deliang Cui,Ching-Ping Wong
Developing metal-free room-temperature phosphorescence (RTP) materials with ultralong lifetimes in dry and wet states simultaneously has been widely concerned due to their potential applications, which is also a tough challenge up to now. Herein, a smart construction strategy is proposed to in-situ embed boron nitride dots (BNDs) into an isogenous B 2 O 3 matrix. The BND-based materials exhibit unexpected bluish-green RTP in solid and various wet conditions (water, oxidants, organic solvents, strong acids and bases). The RTP lifetime of them in powder is as long as ~ 1.7 s, lasting over 10 s to naked eye. B 2 O 3 matrix can not only uniformly disperse the BNDs in it, but also provide a rigid environment via forming hydrogen-bonded and covalently bonded interactions between them to strongly stabilize the triplet states excitions on the dots from nonradiative deactivation. More interestingly, RTP quenching of the BND-based powder in various solutions is effectively suppressed because the B 2 O 3 matrix is not collapsed in them. For instance, the RTP lifetime in water is as long as ~ 0.9 s. Based on the distinctive RTP properties in dry and various harsh wet states, the applications of the BND-based RTP materials in multi-level anti-counterfeiting and information encryption are demonstrated.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Xiaoyu Jiang,Ziqi Zeng,Lifen Xiao,Xinping Ai,Hanxi Yang,Yuliang Cao
Development of intrinsically safe and long lifespan sodium-ion batteries (SIBs) is urgently needed for large-scale energy storage applications. However, most of the currently developed SIBs suffer from insufficient cycle life and potential unsafety. Herein, we construct an all-phosphate sodium-ion battery (AP-SIB) using a Na3V2(PO4)3 cathode, NaTi2(PO4)3 anode, and nonflammable trimethyl phosphate (TMP) electrolyte. The AP-SIB exhibits not only high safety, high rate performance, and ultralong cycle life but also zero-strain characteristics due to the inverse volume change of the phosphate cathode and anode during charge and discharge cycles, offering a safer and cycle-stable Na-ion technology for electric storage applications.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
·
IF 17.694
Yin Xiumei,Xu Wen,Zhu Ge,Ji Yanan,Xiao Qi,Dong Xinyao,He Ming,Cao Baosheng,Zhou Na,Luo Xixian,Guo Lin,Dong Bin
The second near-infrared (NIR II) response photon up-conversion (UC) materials show great application prospects in the fields of biology and optical communication. However, it is still an enormous challenge to obtain efficient NIR II response materials. Herein, we develop a series of Er 3+ doped ternary sulfides phosphors with highly efficient UC emissions under 1532 nm irradiation. β-NaYS 2 :Er 3+ achieves a visible UC efficiency as high as 2.6%, along with high brightness, spectral stability of lights illumination and temperature. Such efficient UC is dominated by excited state absorption, accompanied by the advantage of long lifetimes ( 4 I 9/2 , 9.24 ms; 4 I 13/2 , 30.27 ms) of excited state levels of Er 3+ , instead of the well-recognized energy transfer UC between sensitizer and activator. NaYS 2 :Er 3+ phosphors are further developed for high-performance underwater communication and narrowband NIR photodetectors. Our findings suggest a novel approach for developing NIR II response UC materials, and simulate new applications, eg., simultaneous NIR and visible optical communication.
研究领域:
材料科学
·
光学
·
生物医学工程
✓ 已验证
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 55
·34955-34962
·
IF 3.361
Yue Wu,Cheng Wang,Zewen Yang,Depeng Song,Takeo Ohsaka,Futoshi Matsumoto,Xiaolin Sun,Jianfei Wu
In modern society, flexible rechargeable batteries have become a burgeoning apodictic choice for wearable devices. Conventional lithium–sulfur batteries lack sufficient flexibility because their electrode materials are too rigid to bend. Along with the inherent high theoretical capacity of sulfur, lithium–sulfur batteries have some issues, such as dissolution and shuttle effect of polysulfides, which restricts their efficiency and practicability. Here, a flexible and “dead-weight”-free lithium–sulfur battery substrate with a three-dimensional structure was prepared by a simple strategy. With the cooperative assistance of carbon nanotubes and graphene attached to cotton fibers, the lithium–sulfur battery with 2.0 mg cm−2 sulfur provided a high initial discharge capacity of 1098.7 mA h g−1 at 1C, and the decay rate after 300 cycles was only 0.046% per cycle. The initial discharge capacity at 2C was 872.4 mA h g−1 and the capacity was maintained 734.4 mA h g−1 after 200 cycles with only a 0.079% per cycle decay rate.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2022
·
IF 4.654
Zishuai Zhang,Funian Mo,Wei Ling,Mangwei Cui,Jun Wei,Miao Yu,Yan Huang
Aqueous nickel-ion batteries (NiIBs) featuring small ionic radius and high theoretical volumetric capacity hold great potential in novel aqueous battery systems. However, the further development of aqueous NiIBs is plagued, owing to the strong electrostatic repulsion between Ni2+ ions and the host electrode materials, leading to the limited capacity, poor cycling performance, and inferior rate capability. Herein, the novel K2V6O16·1.64H2O (KVO) nanobelts are synthesized and utilized as cathodes for aqueous NiIBs. The KVO cathode delivers a highly reversible specific capacity of ∼140.0 mA h g–1 after the initial activation process, and ∼70.8 mA h g–1 is achieved with the Coulombic efficiency close to 100% at 0.2 A g–1 after 1000 cycles. ∼40.5 mA h g–1 is still achieved at 1.0 A g–1 after 8000 cycles. Moreover, this battery possesses a remarkable rate capability with ∼137.4 mA h g–1 being regained when the current density is switched from 1.8 to 0.2 A g–1, which is ∼97% of that at 0.2 A g–1. The capacity, lifetime, and rate capability achieved all far exceed those of the reported aqueous NiIBs, arising from the layered structure and fast kinetics of the KVO cathode. This work paves the way toward the design of aqueous NiIBs with high electrochemical performances.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Advanced Energy Materials
·
2020
·Vol. 10
·期 25
·2000892
·
IF 25.245
Yongchao Tang,Xuejin Li,Haiming Lv,Dong Xie,Wenlong Wang,Chunyi Zhi,Hongfei Li
In aqueous alkaline Zn batteries (AZBs), the Co 3+ /Co 4+ redox pair offers a higher voltage plateau than its Co 2+ /Co 3+ counterpart. However, related studies are scarce, due to two challenges: the Co 3+ /Co 4+ redox pair is more difficult to activate than Co 2+ /Co 3+ ; once activated, the Co 3+ /Co 4+ redox pair is unstable, owing to the rapid reduction of surplus Co 3+ to Co 2+ . Herein, CoSe 2− x is employed as a cathode material in AZBs. Electrochemical analysis recognizes the principal contributions of the Co 3+ /Co 4+ redox pair to the capacity and voltage plateau. Mechanistic studies reveal that CoSe 2− x initially undergoes a phase transformation to derived Co x O y Se z , which has not been observed in other Zn//cobalt oxide batteries. The Se doping effect is conducive to sustaining abundant and stable Co 3+ species in Co x O y Se z . As a result, the battery achieves a 10 000-cycle ultralong lifespan with 0.02% cycle −1 capacity decay, a 1.9-V voltage plateau, and an immense areal specific capacity compared to its low-valence oxide counterparts. When used in a quasi-solid-state electrolyte, as-assembled AZB delivers 4200 cycles and excellent tailorability, a promising result for wearable applications. The presented effective strategy for obtaining long-cyclability cathodes via a phase transformation-induced heteroatom doping effect may promote high-valence metal species mediation toward highly stable electrodes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Yang-feng Cui,Zhen-bang Zhuang,Zi-long Xie,Ren-fei Cao,Qi Hao,Ning Zhang,Wan-qiang Liu,Yun-hai Zhu,Gang Huang
Alkaline Zn–MnO2 batteries feature high security, low cost, and environmental friendliness while suffering from severe electrochemical irreversibility for both the Zn anode and MnO2 cathode. Although neutral electrolytes are supposed to improve the reversibility of the Zn anode, the MnO2 cathode indeed experiences a capacity degradation caused by the Jahn–Teller effect of the Mn3+ ion, thus shortening the lifespan of the neutral Zn–MnO2 batteries. Theoretically, the MnO2 cathode undergoes a highly reversible two-electron redox reaction of the MnO2/Mn2+ couple in strongly acidic electrolytes. However, acidic electrolytes would inevitably accelerate the corrosion of the Zn anode, making long-lived acidic Zn–MnO2 batteries impossible. Herein, to overcome the challenges faced by Zn–MnO2 batteries, we propose a hybrid Zn–MnO2 battery (HZMB) by coupling the neutral Zn anode with the acidic MnO2 cathode, wherein the neutral anode and acidic cathode are separated by a proton-shuttle-shielding and hydrophobic-ion-conducting membrane. Benefiting from the optimized reaction conditions for both the MnO2 cathode and Zn anode as well as the well-designed membrane, the HZMB exhibits a high working voltage of 2.05 V and a long lifespan of 2275 h (2000 cycles), breaking through the limitations of Zn–MnO2 batteries in terms of voltage and cycle life.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2021
·
IF 8.301
M. Khaqan Sarwar,Z. Xu,K. Yao,X. Liu,Y. Wang,J. Yang,J. Huang
The development of sodium-ion batteries with a high-power density and long life has attracted considerable interest because of their low cost and potential applications. In this work, we constructed N-doped graphene supported pseudocapacitive material consisting of Ni 3 S 4 grains (50 nm) coated by 3–4 layers of MoS 2 (MoS 2 @Ni 3 S 4 /NG) by facile one-step pyrolysis of nickel phthalocyanine. When the electrode was used as an anode for sodium-ion batteries, a pseudocapacitance-dominated storage mechanism was established, and the extrinsic pseudocapacitance could be further enhanced with the structural evolution of MoS 2 @Ni 3 S 4 during the sodiation/desodiation process, contributing to fast kinetics of Na + storage. The results of impedance analysis indicated that the MoS 2 layers play a vital role in reducing the charge-transfer resistance because the MoS 2 with wider interlayer spacing enables Na + to intercalate with a lower energy barrier compared with intercalating into Ni 3 S 4 directly. As a result, the electrode exhibits a superior cycle life over 1000 cycles, and an excellent rate capacity of 564 mAh g −1 can be achieved at 0.5 A g −1 .
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
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Hong Li,Feng Shao,Xinzhu Wen,Yusen Ding,Chao Zhou,Yafei Zhang,Hao Wei,Nantao Hu
Developing scalable and facile techniques to design and construct unique structures of cathodes with high performance is challenging for the practical Li-S batteries. In this work, highly effective and scalable cathodes based on curved graphene/MXene bi-nanosheets-constituted fibers is demonstrated for long-lifetime Li-S batteries. Wet-spinning is introduced to design and fabricate sulfur cathodes based on graphene/MXene hybrid fibers, in which sulfur is uniformly distributed and intimately enveloped between graphene and MXene nanosheets. The high chemical affinity towards polysulfides enabled by MXene is demonstrated by experiments and density functional theory (DFT) calculations. The assembled cells show high sulfur utilization (the discharge capacity of 1483.1 mAh g −1 at 0.1 C), high rate performance (733.3 mAh g −1 at 2 C) and excellent long cycle stability (0.043% per cycle decay at 1 C over 1000 cycles). Moreover, a reversible areal capacity of 5 mAh cm −2 is achieved under a high sulfur loading of 5.6 mg cm −2 , revealing its great potential for practical applications. This study gives a valuable guidance to design advanced sulfur cathodes for high-performance Li-S batteries.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2017
·Vol. 5
·期 3
·540-545
·
IF 4.136
Dongdong Wang,Guanghui Zhang,Zhongqiang Shan,Tianyong Zhang,Jianhua Tian
Graphical Quick recharge : Hierarchically structured TiO 2 /micron carbon fibers composites composed of well-defined nanowires are fabricated through a straightforward impregnation−calcination process. Owing to its unique features, the material delivers an excellent cycling stability with 92 % capacity retention after 5000 cycles at a high current density of 2000 mA g −1 , highlighting its great potential for ultralong, fast, rechargeable lithium-ion batteries. Long-life lithium-ion batteries require materials with well-designed and controlled structures on nanometer and micrometer scales. Therefore, the hierarchically structured TiO 2 /micron carbon fibers composites (TiO 2 /MCFs) composed of well-defined nanowires are fabricated through a straightforward impregnation-calcination process. The unique features, including hierarchically mesoporous micro-/nanostructures, large specific surface area, and high electrical conductivity endow the TiO 2 /MCFs with convenient lithium-ion and electron diffusion channels and effective stress−strain relief during repeated electrochemical reaction process. As anticipated, TiO 2 /MCFs deliver an excellent cycling stability with 92 % capacity retention after 5000 cycles at high current density of 2000 mA g −1 , highlighting the great potential for long-life and fast-charging lithium-ion batteries.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2020
·
IF 3.762
Yuehua Weng,Guorong Chen,Fei Dou,Xianhuan Zhuang,Qiyu Wang,Mi Lu,Liyi Shi,Dengsong Zhang
Silicon (Si) attracts attention for its ultra-high theoretical specific capacity (3579 mAh g −1 ) as anodes for lithium-ion batteries (LIB). However, adjusting the contradiction between long life and volume expansion has always been a great challenge for Si-based anodes. In this work, we designed a mulberry-like Si-based anode material (p-SiO x /SiC@C) by an in situ self-assembly and magnesium reduction approach. The most outstanding advantage of this strategy is the formation of silicon carbide (SiC) interlayer between SiO x and carbon coating, which hinders the further reduction of SiO x and realizes controllable specific capacity. The SiC interlayer on the SiO x surface can effectively prevent the electrolyte from penetrating and stabilize the solid electrolyte interphase (SEI) well. As a result, p-SiO x /SiC@C shows stable Li + storage performance and ultra-long cycle stability. Even after 2000 cycles under 2.0 A g −1 , p-SiO x /SiC@C still maintains a complete morphology; the capacity retention rate is about 79%; the capacity loss rate is only 0.01% per cycle on average; and it is even more gratifying that the average coulombic efficiency reaches 99.7%. This work opens up a new direction for the practical application of Si-based anode materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Mujtaba Aminu Muhammad,Duo Pan,Yangjie Liu,Junxiang Chen,Jun Yuan,Yongmin Wu,Baffa Haruna,Amir Mahmoud Makin,Ahmed Abdel-Aziz,Zhenhai Wen,Xiang Hu
Transition metal chalcogenides (TMCs) hold great potential for sodium-ion batteries (SIBs) owing to their multielectron conversion reactions, yet face challenges of poor intrinsic conductivity, sluggish diffusion kinetics, severe phase transitions, and structural collapse during cycling. Herein, a self-templating strategy is proposed for the synthesis of a class of metal cobalt-doped NiSe nanoparticles confined within three-dimensional (3D) N -doped macroporous carbon matrix nanohybrids (Co-NiSe/NMC). The cation defect engineering within the developed Co-NiSe and 3D N -doped carbon plays a crucial role in enhancing intrinsic conductivity, reinforcing structural stability , and reducing the barrier to sodium ion diffusion, which are verified by a series of electrochemical kinetic analyses and density functional theory calculations. Significantly, such cation defect engineering not only reduces overpotential but also accelerates conversion reaction kinetics, ensuring both exceptional high-rate capability and extended durability. Consequently, the optimally engineered Co-NiSe/NMC demonstrates a remarkable rate performance, delivering 390 mAh g −1 at 10 A g −1 . Moreover, it exhibits an unprecedented lifespan, maintaining a remarkable capacity of 403 mAh g −1 after 1400 cycles and 318 mAh g −1 after 4000 cycles, even at high rates of 1.0 and 2.0 A g −1 , respectively. This work marks a substantial advancement in achieving both high performance and prolonged cycle life in sodium-ion batteries.
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
危险品化学品经营许可证（带存储）