ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Shuxia Wei,Xuejun Xu,Zongjie Su,Hongyi Lu,Yue Liu,Han Xu,Qianqian Gao,Yunfeng Wang,Ming Li,Tianyu Xing,Siyu Wang,Haoran Li,Li Wu,Yi Zhang
The open-circuit voltage ( V OC ) deficit remains a primary bottleneck hindering the efficiency of solution-processed Cu(In,Ga)(S,Se) 2 (CIGSSe) solar cells, largely due to the uncontrolled elemental diffusion during high-temperature selenization that prevents the formation of a beneficial bandgap gradient. Here, we propose a novel and highly effective low-temperature surface treatment strategy to overcome this long-standing challenge. By spin-coating a gallium-thiourea complex solution onto the pre-fabricated CIGSSe absorber, we construct a strategic Cu-poor, Ga-rich surface layer. Such design widens the surface bandgap, leading to an optimized band alignment at the CIGSSe/CdS heterojunction with a reduced conduction band offset (0.15 eV) and an enlarged valence band offset (1.13 eV). This synergistic effect drastically suppresses interface recombination. As a consequence, we achieve a champion device with a V OC of 0.692 V—the highest value reported to date for solution-processed CIGSSe—and a power conversion efficiency of 16.65% (17.93% with an MgF 2 anti-reflection layer). This work presents a simple yet powerful pathway for targeted front interface engineering, paving the way for high-efficiency, low-cost chalcopyrite photovoltaics.
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ACS Applied Energy Materials
·
2025
·
IF 5.5
Zhengde Wang,Zhengfeng Zhang,Xingkai Zhang,Rupeng Li,Yunxia Wang,Jin Li,Bin Zhang
The LiCoO2 cathode cannot maintain stable battery cycling under high voltage, as the undesired release of lattice O and harmful surface side reactions compromise its structural stability, resulting in battery capacity degradation. Herein, inspired by architectural engineering, we proposed a surface–bulk structure dual-reinforced strategy to tackle the aforementioned challenges by room-temperature Al-induced engineering, which could achieve surface disordering and phosphating and bulk gradient Ni doping of the LiCoO2 cathode. Such a multifunctional structure could delay the detrimental transition, restrain lattice O loss, reduce harmful surface side reactions, and form a phosphate-rich CEI with high ionic conductivity and stability. The as-prepared modified LiCoO2 as the cathode in lithium-ion batteries displayed remarkably enhanced cycle stability than bare LiCoO2 (91.9% vs 45.3% after 100 cycles in 3.0–4.6 V at a current density of 1 C). Even at a 5 C high rate, the modified LiCoO2 cathode also displayed superb battery cycling (92% after 100 cycles at 3.0–4.6 V). This room-temperature Al-induced engineering is universal to other layered cathode materials.
研究领域:
材料科学
·
电化学
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高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Yuqing Li,Weixing Xiong,Qunting Qu,Jie Shao,Ying Yan,Ru Wang,Linze Lv,Honghe Zheng
Dual-ion batteries (DIBs) composed of a graphite cathode and a lithium anode are promising candidates for high-energy and high-power energy storage systems. However, graphite cathode undergoes rapid failure during the extended cycling and rapid charge/discharge mainly because of its structural breakdown and drastic resistance rise of cathode/electrolyte interphase (CEI) arising from the violent electrolyte decomposition at high voltage (4.5–5.0 V). Unlike the mainstream CEI modification strategy solely solving the problem of electrolyte decomposition, this work proposes a bifunctional CEI construction strategy that not only inhibits the electrolyte decomposition but also enhances the mechanical stability of graphite cathodes. Three pH-variable phosphates (LiH 2 PO 4 , Li 2 HPO 4 and Li 3 PO 4 ) are artificially coated on the surface of natural graphite (NG) particles through a green and low-cost wet coating route. The acidic LiH 2 PO 4 coating not only effectively suppresses the electrolyte decomposition through the formation of a conformal coating layer, but also considerably enhances the mechanical strength of NG cathode via a strong bonding between LiH 2 PO 4 and binder. The underlying mechanisms are elucidated through both theoretical calculations and empirical experiments. The optimized NG cathode is able to withstand fast charge/discharge at 60 C and exhibits exceptional capacity retention of 80.7% after 10,000 cycles 2 C.
研究领域:
储能与转换
·
电化学
·
材料科学
·
电池技术
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高影响因子
Advanced Energy Materials
·
2023
·Vol. 13
·期 18
·2203999
·
IF 27.8
Lifan Wang,Guicheng Liu,Rui Xu,Xindong Wang,Liguang Wang,Zhenpeng Yao,Chun Zhan,Jun Lu
The Ni-rich layered oxide cathode is pushing the frontier of battery powered electric vehicles toward longer driving range and lower cost, whilst facing a major challenge with the compromised cycle life and thermal robustness. It is well recognized that irreversible oxygen evolution at the cathode-electrolyte interphase is critical to the electrochemical and thermal stability of the Ni-rich cathode. Herein, combining experiments with density functional theory (DFT) calculations, the authors focus on manipulating the irreversible oxygen evolution to solve the performance degradation and safety hazard. An oxygen ion conductor introduced to the surface of the cathode restrains the activated surficial lattice oxygen ions by its stable oxygen vacancies. Meanwhile, a Li-rich fast ion conductor incorporated in the coating layer synergistically reinforces the Li diffusion path through the cathode-electrolyte interphase. This sophisticated multifunctional surficial modification implemented by a neat one-step treatment represents a successful design and development of a thermally stable Ni-rich cathode and approximately 400-cycle state-of-health up to 80% with the operating voltage range extended up to 4.5 V. Therefore, this study provides an encouraging strategy to overcome the capacity versus robustness dilemma of high-energy cathodes.
研究领域:
材料科学
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电化学
·
能源存储
·
纳米材料
·
固体离子学
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电池技术
·
表面工程
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高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Meng Wang,Xiaolang Liu,Wen Zhang,Hongwei Niu,Leimin Xu,Jiantao Han,Yuhao Lu
For the first time, this work investigates the synergetic impact of yttrium (Y) and aluminium (Al) co-doping on the electrochemical properties of 4.6 V LiCoO 2 (LCO) cathode for high energy density lithium-ion batteries. The optimized LCO demonstrates an impressive initial discharge capacity of 208.6 mAh g −1 in the voltage range of 3–4.6 V, along with superior structural stability , retaining over 86 % of its initial capacity even after 125 cycles at the current of 100 mA g −1 that is far higher than the capacity retention of 40 % for the pristine LCO under the same condition. Thanks to the synergistic effect , Al in Co layers enhances the bonds of Al/Co-O to stabilize oxygen in the LCO crystal structure while Y serves “pillar” in Li layers, migrated from the initial Co layers during cycling process, effectively curtail the formation and expansion of interlayer cracking, which contributes to the long-term cycle stability of LCO under high voltage. Most importantly, Al/Y co-doping is a facile process compatible with the existing industrial infrastructure for LCO mass production, and thus it can be scaled up readily for commercial applications. Al/Y co-doped LCO is assembled into commercial-level pouch cells with graphite anode, achieves an extremely high energy density of 750 Wh/L, and exhibits a superior cycling stability and obtains a capacity retention of 88.2 % at 25 °C after 800 cycles with the high cutoff voltage of 4.55 V.
研究领域:
材料科学
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电化学
·
储能
·
电池技术
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高影响因子
WASTE MANAGEMENT & RESEARCH
·
2024
·
IF 3.7
Yan Zhou,Wenhui Liu,Dandan Chen,Bangwei Liu,Ping Lu,Yiwei Zhang
A novel Fe/Ca-modified biochar (BC) derived from corn stalk was prepared in this study for the simultaneous adsorption and immobilization of arsenic, cadmium and lead in aqueous solution and soil, respectively. The adsorption experiment in aqueous solution indicated that 1Ca-Fe@BC exhibited excellent removal efficiency (R, %) towards arsenic (46.3%), cadmium (76.3%) and lead (93.6%). The presence of cadmium and lead could enhance the adsorption efficiency of arsenic by facilitating the formation of ternary complexes with it. Moreover, both cooperative and competitive effects occurred between cadmium and lead adsorption. When the distribution coefficient of cadmium and lead was equimolar, cooperative adsorption prevailed. However, when the distribution coefficient deviated from this balance, competitive adsorption dominated with a higher affinity for lead. The soil culture experiment demonstrated that the utilization of 1Ca-Fe@BC could enhance the stability of arsenic, cadmium and lead in soil by enhancing soil cation exchange capacity and pH while reducing dissolved organic carbon. The competitive and cooperative effects of arsenic, cadmium and lead in soil were consistent with those found in aqueous solution. The results showed that 1Ca-Fe@BC exhibited an excellent remediation efficiency for both arsenic, cadmium and lead-contaminated aqueous solution and soil.
研究领域:
环境科学
·
土壤学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 4
·318
·
IF 3.2
Su Xiuyuan,Chen Yuan-Bin,Tang Ruxuan
Based on the Na 0.48 La 0.52 MoO 4 ceramic, this study replaced La 3+ ions with Nd 3+ ions through ion substitution, which significantly increased the Q × f of Na 0.48 La 0.52 MoO 4 and reduced the sintering temperature. The good sintering state of this series of ceramics was demonstrated by scanning electron microscopy (SEM) and density tests. X-ray diffraction (XRD) and Raman spectroscopy results revealed the formation of solid solutions without the presence of secondary phases or impurities. The P–V–L theory indicated that the Na/La/Nd–O bond-to-bond ionicity (fi) contribution was dominant, while the Mo–O bond also played a significant role in the lattice energy ( U ), bond energy ( E ), and thermal expansion coefficient ( α ). Among them, the Na 0.48 La 0.48 Nd 0.04 MoO 4 ceramic achieved the best dielectric performance at 900 °C, with ɛ r = 11.027 ± 0.018, Q × f = 113,805 ± 6,358 GHz, and τ f = − 23.36 ppm/℃. Through ion substitution, these materials all have low sintering temperatures and high Q × f values, making them ideal candidates for low-temperature co-fired ceramics (LTCC).
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 57
·120030-120043
·
IF 5.8
Zhou Chuchen,Wan Lei,Lou Zimo,Wu Shuang,Baig Shams Ali,Xu Xinhua
Elevated Sb(V) concentration in textile wastewater is a growing environmental concern worldwide and has received wider attention in recent years. Iron oxides possess appealing characteristics as efficient and cost-effective adsorbents in large-scale applications. In the present study, Sb(V) adsorption capacity of α-Fe 2 O 3 , γ-Fe 2 O 3 , and Fe 3 O 4 was compared under experimental conditions close to the practical textile wastewater treatment. Results demonstrated that α-Fe 2 O 3 performed better under different pH values, reaction times, dye compounds, and co-existing ions as compared to γ-Fe 2 O 3 and Fe 3 O 4 , and the adsorption equilibrium was achieved within 8 h. Sb(V) adsorption is found to be highly pH dependent, and higher removal was achieved in lower pH, indicating the involvement of electrostatic interactions. The pH pzc value of α-Fe 2 O 3 was 7.15, which favored Sb(V) adsorption in practical wastewater having neutral pH value (pH ~ 7). Pseudo-first- and pseudo-second-order described the data and the simulated values of q e fitted well with the experimental values, indicating that pseudo-second-order model described the adsorption kinetics better with R 2 (> 0.95) higher than of pseudo-first-order plots. The Langmuir and Freundlich models both described well the sorption data of all the adsorbents, where the R 2 values were > 0.90 with a better fit in the Freundlich model for α-Fe 2 O 3 , suggesting that the adsorbent has heterogeneous surface characteristics. Similarly, characterizations revealed that the specific surface area, pore volume, and hydroxyl group content in α-Fe 2 O 3 were higher than others, making it easier for contaminants to bind on to the active sites. Furthermore, the effect of dyes and co-existing anions on Sb(V) adsorption was negligible, except for SO 4 2− , CO 3 2− , and PO 4 3− by the formation of inner-sphere complexes with iron oxides through competitive adsorption with [Sb(OH) 6 ] − . Findings from the present study suggested that α-Fe 2 O 3 effectively reduced Sb(V) in textile wastewater and could be a promising alternative for practical textile wastewater treatment. Graphical Abstract
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高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2023
·
IF 11.4
Binbin Shao,Jing Deng,Hongyu Dong,Shuchang Wang,Enchao Li,Xiaohong Guan
Recent research has primarily focused on the utilization of reductants as activators for Fe(VI) to generate high-valent iron species (Fe(IV)/Fe(V)) for the degradation of emerging organic contaminants (EOCs). However, a significant drawback of this approach arises from the reaction between reductants and ferrates, leading to a decrease in oxidation capacity. This study introduces a novel discovery that highlights the potential of the iron(III)-(1,10-phenanthroline) (Fe(III)-Phen) complex as an activator, effectively enhancing the degradation of EOCs by Fe(VI) and augmenting the overall oxidation capacity of Fe(VI). The degradation of EOCs in the Fe(VI)/Fe(III)-Phen system is facilitated through two mechanisms: a direct electron transfer (DET) process and electron shuttle action. The DET process involves the formation of a Phen-Fe(III)–Fe(VI)* complex, which exhibits a stronger oxidation ability than Fe(VI) alone and can accept electrons directly from EOCs. On the other hand, the electron shuttle process utilizes Fe(III)-Phen as a redox mediator to transfer electrons from EOCs to Fe(VI) through the Fe(IV)/Fe(III) or Fe(IV)/Fe(II)/Fe(III) cycle. Moreover, the Fe(III)-Phen complex can improve the utilization efficiency of Fe(V) by preventing its self-decay. This study’s findings may present a viable option for utilizing an effective catalyst to enhance the oxidation of EOCs by Fe(VI) and Fe(V).
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yujin Li,Tan Liu,Yupei Liu,Fanbin Meng,Zhiqian Cao
Preparation of heterostructure electrode materials with dual storage mechanisms of charge adsorption desorption (electric double-layer capacitance) and Faraday redox reaction (pseudo-capacitance) remains a great challenge for supercapacitors with wide operating voltage and high energy density. Herein, the heterostructure ZnO nanoparticles decorated NiFe/CNTs/rGO (ZnO-FeNi/CG) was rational designed and synthesized via a straightforward two-step hydrothermal process for supercapacitor application. The rational designed flower-like heterostructure ZnO-FeNi/CG reveals outstanding specific capacitance of 1265F/g at 1 A/g and 88.5 % capacitance retention after 10,000 cycles even at 30 A/g in three-electrode test. Benefiting from the designed unique heterostructure and the effective anti-catalytic strategy, the Faradaic redox reactions of ZnO-FeNi/CG electrode were well coordinated by HER and OER, so that water splitting process was greatly suppressed under high operating voltage in aqueous alkaline electrolytes. Thus, the fabricated symmetric supercapacitor based on the dual storage mechanisms of electric double-layer capacitance and pseudo-capacitance displays 1.4 V output voltage, ultrahigh capacitance of 227F/g (1 A/g), and exceptional energy density of 62 Wh kg −1 at power density of 1400 W kg −1 as well as extraordinary capacitance retention 84.7 % for 10,000 cycles, outperforming the previous spinel-type metal oxides/carbon-based supercapacitors in aqueous alkaline electrolytes. The dual storage mechanism of charge adsorption desorption and Faraday redox reaction can provide a pathway to design next-generation aqueous symmetric supercapacitors with wide output voltage and ultrahigh energy density for advanced energy storage systems.
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Sustainable Energy & Fuels
·
2023
·Vol. 8
·期 3
·604-609
·
IF 5.6
Jinhui Zhang,Chuanhe Ma,Haixuan Gao,Jinchun Jiang,Hailong Wang
An over-thick MoSe2 layer and numerous voids at the absorbing layer inside and backside lead to a relatively low Jsc and PCE of CZTSSe solar cells. In previous studies, MoO2 and MoO3 sacrificial layers have been commonly used to eliminate those voids and reduce the thickness of MoSe2 layers. However, there is still no clarity about which one is more effective. In this work, we prepared MoO2 and MoO3 sacrificial layers on the surface of Mo-coated SLG substrates by air annealing and ammonia (NH3·H2O) etching, respectively. J–V testing shows that both MoO2 and MoO3 can effectively improve the Jsc and PCE of CZTSSe solar cells, wherein MoO3 is more effective. Comparative analysis shows that the electrical mechanism of Jsc and PCE improvement lies in the significant reduction of device series resistance (Rs). SEM images and XRD pattern results indicate that the reason for Rs decreasing is void elimination and MoSe2 layer thickness reduction from 600 nm to 270 nm after applying MoO3. With the aid of the MoO3 sacrificial layer, the PCE of the CZTSSe device increases from 7.51% to 9.58% (total area 0.21 cm2) without the MgF2 anti-reflection layer.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Husnain Raza,Siqian Li,Qian Zhou,Jiayi He,Ka Wing Cheng,Shuhong Dai,Mingfu Wang
V-type starch-polyphenol complexes, known for their improved physicochemical properties compared to native starch, are challenging to form efficiently. In this study, the effects of tannic acid (TA) interaction with native rice starch (NS) on digestion and physicochemical properties were investigated using non-thermal ultrasound treatment (UT). Results showed the highest complexing index for NSTA-UT3 (∼ 0.882) compared to NSTA-PM (∼0.618). NSTA-UT complexes reflected the V6I-type complex having six anhydrous glucose per unit per turn with peaks at 2θ = 7°, 13°, and 20°. The maxima of the absorption for iodine binding were suppressed by the formation of V-type complexes depending on the concentration of TA in the complex. Furthermore, rheology and particle size distributions were also affected by TA introduction under ultrasound, as revealed by SEM. XRD, FT-IR, and TGA analyses confirmed V-type complex formation for NSTA-UT samples, with improved thermal stability and increased short-range ordered structure. Ultrasound-induced addition of TA also decreased the hydrolysis rate and increased resistant starch (RS) concentration. Overall, ultrasound processing promoted the formation of V-type NSTA complexes, suggesting that tannic acid could be utilized for the production of anti-digestion starchy foods in the future.
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高影响因子
危险品化学品经营许可证（带存储）