ELECTROCHEMISTRY COMMUNICATIONS
·
2014
·
IF 4.287
Dandan Sun,Mingshan Wang,Zhengyang Li,Guangxin Fan,Li-Zhen Fan,Aiguo Zhou
Two-dimensional (2D) Ti 3 C 2 was synthesized by the exfoliation of Ti 3 AlC 2 with HF solution and subsequently intercalation with dimethyl sulfoxide . As anode for lithium ion batteries , Ti 3 C 2 after intercalation had an obvious higher capacity than that before intercalation. The capacity can be 123.6 mAh g − 1 at 1C rate with a coulombic efficiency of 47%. It is higher than that of 2D Ti 2 C and close to the theoretical capacity of Ti 3 C 2 with F termination. It was suggested that MXene with pure F groups may be a way to further improve its Li storage performance.
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DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 8
·1731
·
IF 4.2
Minghua Chen,Qi Fan,Ping Yu,Ke Chen,Peng Li,Kun Liang
Exploiting novel materials with high specific capacities is crucial for the progress of advanced energy storage devices. Intentionally constructing functional heterostructures based on a variety of two-dimensional (2D) substances proves to be an extremely efficient method for capitalizing on the shared benefits of these materials. By elaborately designing the structure, a greatly escalated steadiness can be achieved throughout electrochemical cycles, along with boosted electron transfer kinetics. In this study, chemical vapor deposition (CVD) was utilized to alter the surface composition of multilayer Ti3C2TxMXene, contributing to contriving various layered heterostructure materials through a precise adjustment of the reaction temperature. The optimal composite materials at a reaction temperature of 500 °C (defined as MX500), incorporating MXene as the conductive substrate, exhibited outstanding stability and high coulombic efficiency during electrochemical cycling. Meanwhile, the reactive sites are increased by using TiS2and TiO2at the heterogeneous interfaces, which sustains a specific capacity of 449 mAh g−1after 200 cycles at a current density of 0.1 A g−1and further demonstrates their exceptional electrochemical characteristics. Additionally, the noted pseudocapacitive properties, like MXene materials, further highlight the diverse capabilities of intuitive material design. This study illuminates the complex details of surface modification in multilayer MXene and offers a crucial understanding of the strategic creation of heterostructures, significantly impacting sophisticated electrochemical applications.
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DOI
PubMed
高影响因子
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2025
·Vol. 122
·期 3
·e2416817122
·
IF 9.1
Zhengqiang Hu,Fengling Zhang,Feng Wu,Li Li,Renjie Chen
Lithium-ion batteries (LIBs) have become advanced energy storage technologies; however, specific capacity remains limited by the active materials in cathodes. Here, we report Li–LiNO3 batteries (LNBs) where LiNO3 in electrolyte serves as both active materials and ion conductor at room temperature. LNBs operate on a highly reversible redox between NO3− and NO2−, which results in an impressive areal capacity of 19 mAh cm−2 at a plateau voltage of 1.75 V. Furthermore, the pouch cell exhibits stable cycling at a capacity of 100 mAh. This research underscores the potential of LNBs for high-capacity energy storage.
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DOI
PubMed
高影响因子
Nature Water
·
2024
·Vol. 2
·期 7
·663-673
·
IF 0
Zou Hao,Yang Xinge,Zhu Jingling,Wang Fan,Zeng Ziya,Xiang Chengjie,Huang Danfeng,Li Jun,Wang Ruzhu
In the face of escalating global water scarcity, intensified by population growth and agricultural demands, there is an urgent need to improve water efficiency in greenhouse cultivation. The rapid development of atmospheric water harvesting technology offers us an opportunity to address this issue. Here a novel, solar-driven, scalable hygroscopic gel, termed TCP-Li, that demonstrates exceptional water uptake capacity (3.38 g water g sorbent −1 ) and rapid solar thermal water release was reported. As a proof-of-concept application, we utilize this material in a transpiration and evaporation adsorption device (TEAD), which leverages the properties of TCP-Li to efficiently harvest water vapour from plant transpiration and soil evaporation. TEAD operates passively, absorbing moisture at high relative humidity during the night and releasing water for irrigation during the day using natural sunlight. Greenhouse experiments confirmed the efficacy of TEAD in ensuring normal plant growth while providing additional irrigation water (87.1 g per plant and 1,890.6 g m −2 ), thereby achieving an average water-saving effect of 44.9%. This study introduces a groundbreaking solution aimed at enhancing water efficiency in greenhouse cultivation, offering substantial potential for commercial and large-scale agricultural applications and significantly contributing to mitigating the global water crisis and optimizing water use in modern agriculture.
研究领域:
农业工程
·
环境科学
·
可持续农业
·
材料科学
·
水资源管理
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DOI
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 11
·3980-3987
·
IF 5.7
Yuechao Tang,Jin Yang,Qinan Mao,Yang Ding,Guojun Zheng,Lang Pei,Jiasong Zhong
Driven by the demand for miniaturized broadband near-infrared (NIR) light sources, considerable effort has been dedicated to developing Cr3+-activated phosphors. However, in many cases, the multivalent nature of the Cr ion is adverse to achieving highly efficient emission of Cr3+. Herein, strategic Li+ co-doping was employed to boost the NIR emission of BaGe4O9:Cr3+. In the phosphor, Li+ ions play a pivotal role in the distribution of Cr3+ on the two octahedral sites and the elimination of Cr4+ and crystal defects, leading to a 42.9-fold enhancement of Cr3+ emission. The obtained BaGe4O9:Cr3+,Li+ exhibited broadband emission centered at 808 nm, with an FWHM of 177 nm and an internal quantum efficiency of 61.3%. A fabricated pc-LED device utilizing the phosphor showcased an NIR radiant flux of 24.8 mW and a photoelectric efficiency of 8.9% at 100 mA. Furthermore, the application of the pc-LED in bio-imaging, night vision and information encryption was successfully demonstrated.
研究领域:
材料科学
·
光电技术
·
光子学
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Jia Liu,Tong Wu,Siqi Zhang,Dan Li,Ying Wang,Haiming Xie,Jinghai Yang,Guiru Sun
One big obstacle for a redox mediator (RM)-based Li–O 2 system is the redox shuttling between the diffusible RM + and Li anode, leading to the unexpected RM degradation and continuous deterioration of Li anode, which inevitably results in a low energy efficiency and a poor cycling stability for the Li–O 2 battery. Here, InBr 3 as a self-defensed RM is firstly introduced into Li–O 2 batteries, which can lower the cell overpotential and thus improve the cycling performance. Moreover, due to the In 3+ existence, an In-rich composite protective layer can be in situ generated on the Li anode, which contributes to suppressing the redox shuttling, improving the interface stability of Li and electrolyte, and inhibiting the dendrite formation. This work gives an insight into the development of self-defensed RM and the protection of the Li anode for Li–O 2 batteries.
研究领域:
储能
·
电化学
·
材料科学
·
电池技术
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Shi Zhou,Bowei Ju,Bangfu Yin,Xiaoyi Chen,Linqing Wang,Jun Li,Jiali Liu,Hongbo Shu,Xianyou Wang
A facile surface modification of LLZO is realized via mild acid-base neutralization with pentafluorobenzoic acid (PFA), which efficiently removes surface Li₂CO₃ without destroying the LLZO crystal structure. • The modified LLZO promotes fast lithium-ion transport at the ceramic/polymer interface and facilitates the formation of a stable LiF-rich solid-electrolyte interphase. • This surface engineering approach significantly improves the interfacial compatibility and long-term cycling stability of PEO-based composite solid electrolytes. Li₇La₃Zr₂O₁₂ (LLZO) and polyethylene oxide (PEO)-based composite solid electrolytes (CSE) demonstrate favorable potential for practical applications. However, the Li₂CO₃ passivation layer tends to form on the surface of LLZO particles, which severely degrades the electrochemical performance of the CSE. Herein, a facile surface modification strategy for LLZO is developed via a mild acid-base neutralization reaction between pentafluorobenzoic acid (PFA) and surface Li₂CO₃ in methanol solvent. With 3 wt% PFA addition, Li₂CO₃ can be efficiently eliminated, accompanied by the in-situ formation of a organic coating layer (3PFA@LLZO). The as-prepared 3PFA@LLZO can be then composited with a PEO matrix to obtain 3PFA@LLZO-PEO composite solid electrolytes. It has been found that the 3PFA@LLZO-PEO exhibits a high ionic conductivity of 1.23 × 10⁻⁴ S/cm at 30 °C. More importantly, the in-situ-formed lithium pentafluorobenzoate promotes the construction of a LiF-rich solid-electrolyte interphase (SEI), which greatly enhances the interfacial stability and compatibility. Consequently, at 30 °C, The LiFePO₄(LFP)/Li half-cell displays a capacity retention of 80% after 400 cycles at 0.5C, while the LiNi 0.7 Co 0.1 Mn 0.2 O 2 (NCM)/Li half-cell presents a high capacity retention of 91.7% after 170 cycles at 0.3C. Therefore, it distinctly demonstrates that the proposed surface modification strategy effectively elevates the comprehensive electrochemical performance of PEO-LLZO composite solid electrolytes. Download: Download high-res image (239KB) Download: Download full-size image
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Zhe Zhang,Chuangang Yao,Haixia Zhang,Yuxi Sun,Baixi Xia,Wanning Liu,Jingyi Ding,Li Zhang,Xiaoshi Lang,Kedi Cai
LiCoO2 is widely used in lithium-ion batteries. Innovatively, this study reveals that by employing a synergistic strategy of Li volatilization and anion doping, LiCoO2-based materials demonstrate exceptional performance as solid oxide fuel cell (SOFC) cathodes. At high temperatures, Li volatilization forms a Co3O4 phase. Concurrently, anionic doping is achieved by substituting F ions for O ions. The synergy of these two strategies increases the concentration of oxygen vacancies and the formation of heterogeneous interfaces, effectively enhancing the adsorption, dissociation, and diffusion rates of oxygen, thereby significantly improving the oxygen reduction reaction (ORR) of LiCoO2 (LCO). LCOF1 (LiCoO1.9F0.1+Co3O4) exhibits an oxygen diffusion coefficient (Dchem) and surface exchange coefficient (Kchem) of 8.85 × 10–5 cm2 s–1 and 7.61 × 10–3 cm s–1, respectively, which are 45% and 26% higher than those of undoped LCO. Furthermore, at 800 °C, LCOF1 achieves a PPD of 0.86 W cm–2 and an Rp as low as 0.012 Ω cm2, representing improvements of 110% in PPD and a reduction of 78.6% in Rp compared to LCO. These findings indicate that the synergistic effect of Li volatilization and F doping is an effective strategy for enhancing the performance of Li-containing cathodes, offering valuable perspectives for the development of high-performance SOFC cathodes.
研究领域:
材料科学
·
电化学
·
能源材料
·
燃料电池
·
陶瓷
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产品关联
DOI
高影响因子
RARE METALS
·
2023
·Vol. 42
·期 8
·2562-2576
·
IF 8.8
Liu Si-Ming,Chen Meng-Xun,Xie Ying,Liu Deng-Hua,Zheng Jin-Fei,Xiong Xiang,Jiang Heng,Wang Li-Chang,Luo Heng,Han Kai
All-solid-state lithium-sulfur (Li-S) battery is regarded as next-generation high energy density and safety battery system. The key challenge is to develop a compatible high-performance solid-state electrolyte. Herein, a two birds with one stone strategy is proposed to simultaneously enhance Li + conductivity and polysulfide adsorptivity of poly(ethylene oxide) (PEO)-based polymer electrolyte via the integration of Nb 2 CT x MXene. Moreover, the sheet size of Nb 2 CT x MXene is crucial for the enhancement of Li + conductivity and polysulfide adsorptivity, attributing to the difference in a specific surface area related to the percolation effect. By tuning the sheet size of Nb 2 CT x MXene from 500–300 nm to below 100 nm, the ionic conductivity of the PEO electrolyte is increased to 2.62 × 10 −4 S·cm −1 with improved Li + transference number of 0.37 at 60 °C. Furthermore, theoretical calculation and X-ray photoelectron spectroscopy (XPS) conjointly prove that polysulfides could be effectively adsorbed by Nb 2 CT x nanosheets via forming Nb−S bonding to inhibit their shuttle in the PEO framework. As a result, the all-solid-state Li-S cell exhibits an initial capacity of 1149 mAh·g −1 at 0.5C and good cycling stability with 491 mAh·g −1 after 200 cycles. The results demonstrate the necessity of polysulfide inhibition and the application of Nb 2 CT x MXene in PEO-based electrolytes for all-solid-state Li-S batteries. Graphic
研究领域:
材料科学
·
储能技术
·
电化学
·
纳米材料
·
固态电池
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Dan Li,Changyan Zhu,Min Zhang,Ying Wang,Ziye Kang,Yulong Liu,Jun Liu,Jia Liu,Haiming Xie
How to develop a homogeneous redox mediator (RM) towards both ORR and OER and how to prevent the shuttle effect are two main issues for Li-O 2 batteries thus far. Here, we firstly report 1,2-dimethyl-3-propylimidazolium iodide (DMPII), which serves multiple functions as a RM for discharge capacity promotion, a RM for charge potential reduction, and a Li anode protector for shuttling suppression by in situ generating a “self-defensed” SEI layer. Benefiting from these advantages, a cell with DMPII displays a stable cyclability with a low terminal charge potential of ~3.6 V till the cell death, a considerable rate performance, and a good reversibility associated with Li 2 O 2 formation and degradation. Based on the experimental and density functional theory (DFT) calculation results, a working mechanism for a cell operation is also proposed. These results represent a promising progress in the development of multiple-functional RM for Li-O 2 batteries. Moreover, we expect that this work gives an insight into the in situ protection of Li metal anode for board applications ( e.g., Li-S batteries, all-solid-state Li-ion batteries, etc. ).
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高影响因子
Journal of Sustainable Metallurgy
·
2021
·Vol. 7
·期 1
·203-214
·
IF 2.347
Tang Zujian,Guan Xiaofei
Abstract Lithium is a critical metal with a wide range of applications in energy, electronics, and chemical industry. Currently, the industrial method for Li metal extraction relies on electrolysis of molten LiCl and suffers from various safety, cost, and environmental issues. In this work, we report electrochemical extraction of Li from molten LiOH by using a liquid tin (Sn) cathode. The use of liquid Sn cathode offers various advantages, such as lowering the dissociation potential of LiOH and easy collection of the metallic Li. Electrochemical and materials characterization results reveal that a plunge of electrolysis current occurs in the electrolyser without using a porous alumina membrane, due to the formation of a Li 2 O passivation layer at the cathode/electrolyte interface. In the electrolyser with a porous alumina membrane, continuous electrolysis has been achieved, and the side surface of the liquid Sn is identified to be the effective interface for Li electrodeposition. In addition, we demonstrate the use of the Li–Sn product for the synthesis of acetylene (C 2 H 2 ), a widely used fuel and chemical feedstock. Graphical Abstract
研究领域:
材料科学
·
电化学
·
能源技术
·
化学工程
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DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Tian Qin,Zihao Wang,Xiaojun Ding,Shuqi Fu,Na Zhan,Wentao Lu,Zijian Li,Zihao Huang,Mingyang Li,Jiansheng Liu,Fei Gao,Weiping Zhou,Zhenzhi Cheng,Guangsheng Luo
Li 7 P 3 S 11 -based all-solid-state lithium metal batteries (ASSLMBs) have received a lot of attention because of their potential for high energy density . However, the poor interfacial stability between Li 7 P 3 S 11 electrolyte and lithium metal anode hinders its application in ASSLMBs. Here, the Li-SnO 2 composite anode (LSO) was designed by treating the lithium metal with SnO 2 to produce an interface composed of Li 22 Sn 5 and Li 2 O phases. The rapid lithium ion diffusion coefficient of Li 22 Sn 5 alloy accelerates the migration of lithium ions at the interface, while the favorable lithiophilicity of Li 2 O induces the uniform deposition of lithium ions, which hinders the growth of lithium dendrites . Therefore, the symmetrical battery using an LSO anode showed a high critical current density (CCD) of 2.5 mA cm −2 at room temperature and a stable cycle of 350 h at room temperature at 0.2 mA cm −2 (0.2 mAh cm −2 ). In addition, the improved all-solid-state lithium battery also showed an ultra-stable cycle, and the NCM622/LPS/10LSO battery still maintained 78.6 % of its original capacity after 250 cycles at 0.5C. The surface treatment method of the LSO composite anode enables it to produce ASSLMB with excellent electrochemical performance .
研究领域:
材料科学
·
电化学
·
能源存储
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DOI
高影响因子
危险品化学品经营许可证（带存储）