Energy & Environmental Materials
·
2022
·Vol. 6
·期 5
·e12415
·
IF 13.443
Lin Chen,Jingwen Zhou,Junxiang Zhang,Guicai Qi,Bin Wang,Jianli Cheng
High energy density Li-CO 2 batteries have attracted much attention owing to the “two birds with one stone” feature in fixing greenhouse gas CO 2 and providing renewable energy. However, poor reversibility of the discharge product Li 2 CO 3 is one of the main problems that limit its application, resulting in poor cycling stability and severe polarization. Herein, copper indium sulfide (CIS), a semiconducting non-precious metal sulfide, is fabricated as cathode catalysts for high-performance Li-CO 2 batteries. Combined with the synergistic effect of bimetallic valence bonding and coordinated electron transfer, Li-CO 2 batteries using CIS cathodes exhibit high full specific discharge capacity, excellent rate capability and cycle stability, namely it delivers a high specific full discharge capacity of 8878 μAh cm −2 , runs steadily from 10 to 100 μA cm −2 , and performs a stable long-term cycling behavior (>1050 h) under a high energy efficiency of 84% and a low charge voltage of approximately 3.4 V at 20 μA cm −2 within 100 μAh cm −2 . In addition, a flexible Li-CO 2 pouch cell is constructed to reveal the potential of employing CIS to fabricate flexible high energy storage devices in practical applications. This work shows a promising development pathway toward next-generation sustainable energy storage devices.
研究领域:
电化学
·
能源材料
·
纳米催化
·
可持续能源存储
·
金属-气体电池
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·Vol. 45
·期 8
·10633-10639
·
IF 3.45
Guorong Hu,Zhichen Xue,Zhongyuan Luo,Zhongdong Peng,Yanbing Cao,Weigang Wang,Yuexi Zeng,Yong Huang,Yong Tao,Tianfan Li,Zhiyong Zhang,Ke Du
The Li-rich cathode material for long cycle performance and long-term storage performance is a challenge for next-generation lithium-ion batteries due to the rapid capacity degradation over cycling and the formation of residual lithium on the surface during long-term storage. Herein, an elevated performance of Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 materials via CeO 2 inlay is reported, which was prepared from Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 by sol-gel inlay with CeO 2 . It was proved by scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy that cerium oxide cladding not only covered the surface of the material but also diffused into the interior of the material change crystal structure. Cerium oxide on the cladding not only reduces the material's contact with water and carbon dioxide in the air, but also prevents the material from being corroded by electrolyte during electrochemical test. The position of the transition metal atom is replaced Ce atoms, which increases the unit cell volume and the stability of the Li-rich material during the cycling. The results show that the storage property and the electrochemical cycling property of the material have been improved obviously. The CeO 2 inlaid lithium rich material discharged 204.6 mAh/g for the first time at the current of 1C, and 164.4 mAh/g after 150 charge and discharge cycles with corresponding capacity retention rate of 80.35%, compared with the retention rate of 57.26% for pristine Li-rich material capacity. After being stored in humid air for 40 days, the CeO 2 inlaid lithium-rich material showed better electrochemical performance than the pristine one. It is powerfully demonstrated that the CeO 2 inlay strategy here holds huge promise for surface modification of electrode materials for lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
锂离子电池
·
能源存储
·
无机非金属材料
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DOI
高影响因子
IONICS
·
2022
·Vol. 28
·期 11
·4943-4947
·
IF 2.961
Li Ze,Li Yonghua,Xie Huan,Zuo Zhaoyang,Chu Peng
As a kind of anode materials, iron matrix oxide cannot be widely used in the lithium-ion batteries due to their poor electrical conductivity and huge volume change during the electrochemical cycles. Herein, the porous carbon@Fe 2 O 3 composites are prepared by hydrothermal method. Due to the porous structure and introduction of carbon, the electrical conductivity can be greatly improved. Additionally, the porous structure could buffer the volume change during electrochemical cycles. As a result, the as-prepared carbon@Fe 2 O 3 composites deliver a high initial specific capacity of 1168 mAh/g at 0.1 C. Moreover, the carbon@Fe 2 O 3 composites show outstanding rate performance and superior cycling stability. This work provides a potential anode material for high electrochemical performance Li-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
功能复合材料
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Xiangyang Zhuang,Yao Zhang,Lingxiao He,Yunfeng Zhu,Quan Shi,Quan Wang,Guanzhou Song,Xiaoxiao Yan,Liquan Li
Overheating caused by exothermic effect of magnesiothermic reduction reaction is usually considered as a drawback in preparing porous silicon anode materials for Li-ion batteries. However, in the present work, thermal effect is available in facile preparation of macroporous Si by tabletting pretreatment . The released heat in magnesiothermic reaction is easily accumulated on the tablet with high density, leading to the collapse of the mesoporous structure of the precursor and formation of uniform macroporous silicon . Such macroporous silicon shows a higher initial Coulomb efficiency (86.5%) and enhanced cycling stability in comparison with mesoporous silicon prepared without tabletting treatment. XRD analysis indicates that the reaction temperature decreases to 430–435 °C (based on set temperature), much lower than that of the reaction without pretreatment. Since the structure of product has less dependency on precursor, a wide variety of precursors can be used to synthesize macroporous silicon, e.g. low cost biosilica. Being ascribed to low reaction temperature, heating rate insensitivity, less dependency on precursor, enhanced cycling performance and high initial Coulomb efficiency of the Si products, the modified magnesiothermic reduction method is promising for application in fabricating Si anode.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机合成
·
功能材料
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Jiabin Hao,Hongli Bai,Jintao Liu,Fangli Yang,Qiling Li,Changwei Su,Junming Guo
A (Li, Cu)-co-doped cathode material Li(Li 0.05 Cu 0.05 Mn 1.90 )O 4 was prepared by a flameless combustion synthesis at 500 °C for 3 h and then two-stage calcination at 700 °C for 6 h. Physical and electrochemical performances were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), galvanostatic charge–discharge cycling test, cyclic voltammogram (CV) and electrochemical impedance spectroscopy (EIS) to investigate the influence of Li and Cu substitution on the lithium ion batteries . Li(Li 0.05 Cu 0.05 Mn 1.90 )O 4 not only exhibited the initial discharge capacity of 106.9 mAh g −1 with a high retention of 89.2% after 500 cycles at 1.0 C but also retained 63.5% capacity after 1500 cycles at 5.0 C. Besides, a good rate capability at different current densities from 0.5 C to 5.0 C can be acquired. The (Li, Cu)-co-doped sample had excellent cycling stability in comparison with the LiMn 2 O 4 cathode.
研究领域:
材料科学
·
电化学
·
储能技术
·
无机合成
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2023
·Vol. 25
·期 46
·31754-31769
·
IF 3.3
Wenhao Pan,Changjiang Yang,Lei Zhou,Xiaolan Cai,Yankun Wang,Junhao Tan,Jun Chang
This study aimed to address the challenges associated with silicon (Si) anode materials in Li-ion batteries, such as their large volume effect and poor electrical conductivity. To overcome these limitations, a novel composite microsphere called pSi/Ag was developed using quartz waste through a combination of high-energy ball-milling, spray drying, and magnesiothermic reduction techniques. The morphology and structure of the pSi/Ag composite were thoroughly characterized using various methods, including X-ray diffraction, field-emission scanning electron microscopy, and transmission electron microscopy. The results revealed that the Ag nanoparticles were uniformly dispersed within the porous micron-sized Si sphere particles, leading to enhanced electrochemical performance compared to pure porous silicon that did not undergo the spray drying process. The use of micron-sized Si prevented the excessive formation of the solid electrolyte interphase film, and the pSi/Ag-5 anode, prepared with 5 wt% AgNO3 as a precursor, demonstrated an impressive initial Coulombic efficiency of 92.8%. Moreover, a high specific capacity of 1251.4 mA h g−1 over 300 cycles at a current density of 4000 mA g−1 was attributed to the improved conductivity provided by the Ag nanoparticles in the Si matrix. The straightforward synthesis method employed in this study to produce pSi/Ag presents a promising approach for the future development of high-performance silicon anodes in Li-ion batteries.
研究领域:
材料科学
·
储能
·
纳米技术
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2026
·
IF 14.3
Wanqi Chen,Ruolan Tang,Bo Yang,Wenzhao Sun,Bo Zhang,Peize Lv,Banghe Lv,Haile Yan,Zongbin Li,Song Li,Liang Zuo
The Magnéli-phase λ-Ti 3 O 5 , characterized by its unique flat-band electronic structure, is a promising photothermal conversion material for solar-driven interfacial evaporation. However, its intrinsic thermodynamic instability at ambient temperature severely constrains large-scale practical application. To overcome this challenge, we developed a scalable synthesis strategy for stabilizing λ-Ti 3 O 5 via arc-melting followed by high-energy ball milling, coupled with Lithium (Li) doping. Structural and surface analyses confirm that Li incorporation effectively stabilizes the λ-phase. Morphological studies reveal particle refinement (∼1–2 μm) with increased surface roughness and oxygen vacancies, further enhancing solar absorption with overall reflectivity < 6% in the range of 250–2500 nm. Incorporating 10 wt.% of Li 0.25 Ti 2.75 O 5 particles into a Polyvinyl alcohol/Polyvinylpyrrolidone (PVA/PVP) porous hydrogel evaporator yielded an evaporation rate of 5.22 kg m −2 h −1 under one sun irradiation. Remarkably, the evaporator demonstrated excellent resistance to salt crystallization, maintaining stable performance during a 24-h continuous operation in 3.5 wt.% saline water. This work not only provides a practical and scalable approach for stabilizing λ-Ti 3 O 5 but also offers valuable insights into the development of efficient, durable photothermal materials for solar desalination technologies.
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产品关联
DOI
高影响因子
Solar RRL
·
2026
·Vol. 10
·期 11
·e70386
·
IF 4.8
Shiliang Xiao,Chunxu Xiang,Yize Li,Yuanyuan Zheng,Xinyu Li,Na Zhao,Haoyu Guo,Youyou Yuan,Shaoying Wang,Weibo Yan,Hao Xin
Kesterite Cu 2 ZnSn (S,Se) 4 (CZTSSe) solar cells, as an emerging class of inorganic photovoltaics, offer promising application prospects owing to their earth-abundant and environmentally benign constituent elements, as well as a high theoretical power conversion efficiency. However, the relatively low majority carrier concentration, detrimental band tailing induced by bulk Cu–Zn disorder defects, and severe interface recombination limit further improvement in device efficiency. In a dimethyl sulfoxide (DMSO) solution system, extrinsic cation doping with Li + and Cd 2+ was introduced to optimize both bulk and interfacial properties of the CZTSSe absorber. The results show that the co-incorporation of Li and Cd into the absorber significantly improves its crystallinity, reduces defect density, and suppresses band tailing states, while simultaneously enhancing the hole carrier concentration of CZTSSe. Furthermore, Li + Cd co-doping results in more favorable conduction band offset (CBO) at CZTSSe/CdS heterojunction interface compared to the control group, which effectively reduces carrier recombination and enhances carrier collection efficiency, achieving a power conversion efficiency of 14.2% for the champion device.
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DOI
高影响因子
DESALINATION
·
2026
·
IF 9.9
Yi Yuan,Tong Wu,Lijuan Hu,Yajie Ding,Jianqiang Wang,Fu Liu
Nanofiltration membranes were prepared by regulating monomer diffusion. • Nanofiltration membranes with tailored pore distribution and thinner structure achieved • Nanofiltration membranes exhibit an exceptional Li + /Mg 2+ selectivity of 173. • Nanofiltration membranes exhibit a high water permeance of 15.4 L·m −2 ·h −1 ·bar −1 . Amid the urgent demand for lithium resources driven by the global carbon neutrality goals and the rapid development of the new energy industry, efficiently separating and extracting lithium from salt lakes has emerged as a challenge. Current nanofiltration membranes exhibit issues such as low selectivity, limited permeance, and broad pore size distribution in Li + /Mg 2+ separation. This study proposes a novel strategy for the synergistic control of interfacial polymerization by combining electrically generated in-situ bubbles with surfactants. Electrolysis of water generates negatively charged hydrogen bubbles that attract positively charged amine monomers via electrostatic interaction. Synergized by electric field forces and the buoyancy of the bubbles, the amines are transported to the water/hexane interface for enrichment. Meanwhile, a surfactant added to the oil phase forms a monolayer at the oil-water interface, reducing surface tension and promoting the diffusion of the amine monomers. These mechanisms synergistically modulate interfacial polymerization kinetics, optimizing polyamide density and pore size distribution. The resulting membrane demonstrates an excellent Li + /Mg 2+ selectivity of 173 and high water permeance of 15.4 L·m −2 ·h −1 ·bar −1 . This work presents a novel and feasible strategy that holds promise for achieving large-scale production and advancing the development of efficient lithium extraction technologies from salt lake brine.
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 42
·33149-33167
·
IF 4.4
Guo Hongyan,Shi Dandan,Wang Yiying,Zhao Caiying,Zhong Kaipeng,Cao Jiajia,Xu Naicai,Bian Shaoju
With the increasing popularity of electric vehicles, the demand for lithium batteries is growing. Extracting lithium from salt-lake brine is an important method for lithium separation. This study successfully synthesized high-valence Zr 4+ -doped spinel manganese oxides using a hydrothermal-calcination approach to enhance adsorption capacity and address capacity degradation issues during the cycling of manganese-based lithium-ion sieves (Mn-based LIS). The results indicate that Zr 4+ -doping reduces the particle size and increases specific surface area from 24.22 to 32.70 m 2 g −1 . The adsorption isotherm was well fitted by the Langmuir model for 2% ZrCl 4 -doped H 1.6 Mn 1.6-x Zr x O 4 (2-HMZO) indicating a monolayer chemisorption mechanism, and the theoretical maximum adsorption capacities ( q m ) of 2-HMZO at 298, 308, and 318 K were 55.13, 58.24, and 65.92 mg g −1 , respectively. The adsorption capacity of the 2-HMZO achieved 88% of its theoretical adsorption capacity. After ten cycles of adsorption and desorption, the material maintained the Mn dissolution loss of 3.77%. Meanwhile, theoretical calculations confirmed that Zr 4+ doping enhances structural stability and facilitates easier Li + transport. Combined characterization results further confirmed that the primary Li + adsorption mechanism of 2-HMZO involves ion exchange. This research provides experimental evidence for advancing the practical application of Mn-based LIS and achieving efficient lithium extraction from salt-lake brines. Graphical abstract A spinel-type Zr-doped H 1.6 Mn 1.6 O 4 adsorbent was synthesized via hydrothermal, solid-state and ion-exchange methods, using high-valence Zr 4+ as the dopant ion. The introduction of Zr 4+ significantly enhanced the Li + adsorption capacity of HMO, and it also exhibited excellent ion selectivity in real brine samples. The primary adsorption mechanisms are ion exchange and surface electrostatic interactions. Furthermore, the adsorbent well retains its intact spinel structure even after ten consecutive adsorption-desorption cycles.
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DOI
高影响因子
ACS Nano
·
2026
·Vol. 20
·期 37
·25629-25641
·
IF 17.3
Deng Hao,Zhu Yong,Xu Kai,Pang Xiao,Lu Yanqiu,Zheng Yu,Wang Ying,Lyu Bohui,Zhang Runnan,Jiang Zhongyi,Zhang Sui
Covalent organic framework (COF) nanosheets are ideal
building
blocks for fabricating high-performance membranes. The production
of COF nanosheets in water is a significant step towards sustainable
synthesis but remains an unresolved challenge. Herein, we report an
aqueous synthesis method for COF nanosheets via a group capping-decapping
strategy. The in-plane-dominated COF growth is driven by two factors:
first, capping of aldehyde groups with secondary amines enhances monomer
solubility in water for homogeneous nucleation; second, the presence
of ionic groups on amine monomers suppresses out-of-plane stacking
via electrostatic repulsion. By adjusting Brønsted acids or bases
concentrations, the decapping rate and the subsequent COF polymerization
rate can be tuned, enabling precise control over the reaction kinetics.
Consequently, highly crystalline ionic COF nanosheets can be mildly
synthesized in water with high volumetric yield and at a gram scale.
The COF composite membranes assembled from nanosheets and polyethylenimine
exhibit high selectivity and outstanding Li + recovery efficiency
for Li + /Mg 2+ separation. Furthermore, the excellent
processability of COF nanosheets is demonstrated by fabricating the
tubular membrane module.
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DOI
高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Tian-tian Xue,Jian-wei Jia,Fan-xin Kong,Li-ping Yue,Guang-dong Sun,Jin-fu Chen
Positive surface charge dominates Mg 2+ /Li + selectivity in commercial NF membranes. • The DK membrane achieves a separation factor of 24.6 at a Mg 2+ /Li + ratio of 150. • A narrow pore size distribution is key to achieving precise ion sieving. • The DSPM&DE model predicts performance by quantifying volume charge density (χ). The efficient extraction of lithium from salt lake brines characterized by high Mg 2+ /Li + ratios presents a significant challenge in sustainable resource recovery. This study presented a systematic evaluation of six commercial nanofiltration (NF) membranes (GH, GT, NF90, NF270, DK, SelRO). Quantitative analysis revealed a moderate positive correlation between the surface amine group density and the Mg 2+ /Li + separation factor (up to 24.6), establishing amine density as a key descriptor for selectivity. Higher amine density yielded a more positive surface charge, which enhanced Donnan exclusion of Mg 2+ . Membranes exhibiting a positive surface charge (DK, SelRO, GT) achieved superior Mg 2+ rejection (>90%) and high separation factors. In particular, the DK membrane exhibited a separation factor of 24.6 at a Mg 2+ /Li + ratio of 150, attributable to enhanced Donnan exclusion of divalent cations. Furthermore, the pore size distribution emerged as a critical determinant of selectivity, wherein narrow distributions (e.g., Sₚ = 0.26 for the GT membrane) significantly enhanced separation precision. The Donnan Steric Partitioning Model with Dielectric Exclusion accurately predicted separation performance (error <15%), identifying volume charge density as the dominant factor. This work established a quantitative correlation between surface amine density and Mg 2+ /Li + separation performance, providing practical insights for membrane selection and future membrane design. Download: Download high-res image (135KB) Download: Download full-size image
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DOI
高影响因子
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