ACS Materials Letters

Nan Yan

Jingjing Li

Tengying Ma

Xuejie Liu

Yanqiu Du

Fan Wu

Yutian Zhu

Self-Organization of Polymer-Tethered Gold Nanoparticles into Hybrid Polyhedral Clusters Confined in Soft Emulsion Droplets

聚合物接枝金纳米粒子在软乳液液滴中自组装形成杂化多面体团簇

Chongrui Dong

Shenglong Tang

Yiqing Chen

Xiangjun Pu

Xiang-kui Gu

Yuliang Cao

Zhongxue Chen

ACS Materials Lett.

Identifying the Synergistic Na+/Zn2+ Co-Intercalation Mechanism for Boosting Electrochemical Performance of Na4Fe3(PO4)2P2O7 in Zn-Ion Batteries

De Lin Hu

Jing Yuan Guo

Mei-Juan Xie

Ming-Sheng Wang

Fa-Kun Zheng

Guo-Cong Guo

Viologen Unlocks Photogenerated Carrier Confinement in Low-Dimensional Perovskites for High-Stability and High-Gain X-ray Detection

紫精解锁低维钙钛矿中光生载流子限制，实现高稳定性与高增益X射线检测

Yihong Yu

Zhengpeng Qin

Xuefeng Zhang

Yanan Chen

Gaowu Qin

Song Li

Far-From-Equilibrium Processing Opens Kinetic Paths for Engineering Novel Materials by Breaking Thermodynamic Limits

远离平衡态加工打破热力学极限，为工程新型材料开辟动力学途径

Monoatomic metal wires (MAMW) possess unique physical properties and exciting potential applications. In particular, Ni MAMW has been predicted to be ferromagnetic. However, the inherent instability of MAMW due to the Peierls distortion phenomenon renders its fabrication and isolation extremely difficult. Here we fabricate monatomic Ni MAMW through the columnar self-assembly of tribenzocyclyne (TBC) derivatives. Three types of Ni MAMWs have been constructed: MAMW I, II and III with average Ni–Ni distances of 0.480, 0.342, and 0.336 nm, which were found to be diamagnetic. The Peierls distortions were absent when three H-bonds were installed on each TBC unit, giving insight into the energy level required to overcome Peierls distortions. These results not only enriched the methods for the fabrication of MAMWs but also are of value to understand the magnetic properties of MAMWs.

Bin Li

Glenn P. A. Yap

Vincent St-Onge

Niki Mavragani

Thi Thanh Hà Dao

Pierre Baillargeon

Patrick Fournier

Yves L. Dory

Jerome P. Claverie

Monoatomic Nickel Wires via Columnar Self-Assembly of Tribenzocyclyne Nickel Complexes

单原子镍线通过三苯并环炔镍配合物的柱状自组装形成

Perovskite solar cells have attracted extensive attention due to their simple manufacturing process and high efficiency. However, defects between the perovskite and hole transport layer can lead to nonradiative recombination of photogenerated carriers and severe ion migration, which accelerates the degradation of such devices. Here, we chose to deposit an Al2O3 porous insulating layer on the surface of the perovskite film. At the same time, we chose to introduce NMABr (1-Naphthylmethylamine Bromide) into Al2O3 as a modifier to overcome the issue that applying Al2O3 alone may hinder interfacial carrier transport due to the uncontrolled morphology. The addition of NMABr not only has a passivation effect but also changes the morphology of the Al2O3 layer. Under the synergistic effect of Al2O3 and NMABr, a porous insulating contact layer is better formed, which is conducive to carrier transport and improves the stability and efficiency.

Jiashun Li

Jing Liao

Tianhe Dong

Hongyu Li

Ze Li

Li Tan

Xu Chen

Wenfeng Zhang

Haijin Li

Synergetic Porous Insulating and Passivation Layer Design for High-Efficiency and Stable Perovskite Solar Cells

高效稳定钙钛矿太阳能电池的协同多孔绝缘与钝化层设计

Whenever the cycling of Li-ion batteries is stopped, the electrode materials undergo a relaxation process, but the structural changes that occur during relaxation are not well-understood. We have used operando synchrotron X-ray diffraction with a time resolution of 1.24 s to observe the structural changes that occur when the lithiation of graphite and LiFePO4 electrodes are interrupted. Assessing the kinetics of the relaxation processes coupled with molecular dynamics simulations allows us to identify three relaxation stages in graphite. The atomistic origin for the relaxation process within the partially lithiated graphite structure is driven by the reorganization of Li ions into Li clusters. Relaxation in LiFePO4 electrodes is considerably slower than for graphite, but the observed structural changes is also attributed to reorganization of Li ions. These insights highlight the nature of the structural changes that occur during relaxation and the importance of using operando structural studies to avoid misleading conclusions about the reaction mechanisms in battery materials.

Amalie Skurtveit

Erlend Tiberg North

Heesoo Park

Dmitry Chernyshov

David S. Wragg

Alexey Y. Koposov

Stepwise Structural Relaxation in Battery Active Materials

电池活性材料的逐步结构弛豫

Cu-based materials are regarded as effective electrocatalysts for CO2RR; however, Cu+, the active site for C–C coupling, is unstable under reduction conditions. Herein, Mg2+ is doped into the Cu2O/CuO interface and generates high-activity Cu+–O-Mg2+ sites following electrochemical activation. The electron-withdrawing effect of Mg2+ in the Cu+–O-Mg2+ site stabilizes Cu+ and optimizes the reaction pathway for CO2RR. At a partial current density of 567.21 ± 5.18 mA cm–2, the Faraday efficiency (FE) for C2+ products can reach 81.03 ± 0.74%. In situ Raman and in situ infrared spectroscopy reveal that the Cu+–O-Mg2+ site significantly enhances the coverage and stability of *CO, which contributes to the ultrahigh selectivity of CO2 toward C2+ products. Density functional theory (DFT) studies indicate that *CO2 is readily adsorbed on the Cu+–O-Mg2+ site, facilitating the more effective generation of *CO, which subsequently promotes the electrochemical C–C coupling step and accelerates the production of C2+ products.

Qinyuan Ji

Hu Zang

Changjiang Liu

Haiyan Lu

Nan Yu

Baoyou Geng

Establishing Active Cu+–O–Mg2+ Sites at the Cu2O/CuO Interface for Efficient Electroreduction of CO2 to C2+ Products

在Cu2O/CuO界面建立活性Cu+–O–Mg2+位点以实现高效的CO2电还原为C2+产物

Photoassisted capture of uranium provides a promising strategy for the sustainable utilization of nuclear energy. Herein, we constructed Cu2O/CuO heterojunctions in situ by a wet-etching method, showing ultrafast reaction kinetics and photocatalytic activity for U(VI) reduction. In 8 ppm of uranium-containing wastewater, the Cu2O/CuO heterojunctions exhibited a remarkable uranium extraction efficiency of 94.6% within 10 min under irradiation, which exceeded most recently reported photocatalysts. The photocatalytic reaction rate constant of Cu2O/CuO heterojunctions was 5.8-time larger than that of pure Cu2O. A mechanism study indicated that the photogenerated electrons reduced CuO species in Cu2O/CuO heterojunctions and in situ created the oxygen vacancy during the photocatalysis process, which strengthened the binding of UO22+. The rapid electron transfer rate over the in situ heterojunction interfaces and the enhanced UO22+ binding strength by the in situ formed oxygen vacancy accounted for the ultrafast reaction kinetics.

Huanhuan Liu

Hongliang Guo

Dingping Huang

Li Zhou

Jia Lei

Yan Liu

Wenkun Zhu

Ultrafast Photoassisted Capture of Uranium over Cu2O/CuO Heterojunction Enabled by Rapid Interfacial Electron Transfer

超快光辅助铜铋氧化物/铜氧化物异质结界面快速电子转移促进的铀捕获

Abbreviation	ACS Materials Lett.
Journal Impact	9.56
Quartiles(Global)	MATERIALS SCIENCE, MULTIDISCIPLINARY(Q1)

ISSN	2639-4979
h-index	61

Publication Information	Publisher: American Chemical Society，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 2019，Proportion of original research papers: 91.09%，Self Citation Rate:2.10%， Gold OA Rate: 5.52%

ACS Materials Letters

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Self-Organization of Polymer-Tethered Gold Nanoparticles into Hybrid Polyhedral Clusters Confined in Soft Emulsion Droplets

Identifying the Synergistic Na⁺/Zn²⁺ Co-Intercalation Mechanism for Boosting Electrochemical Performance of Na₄Fe₃(PO₄)₂P₂O₇ in Zn-Ion Batteries

Viologen Unlocks Photogenerated Carrier Confinement in Low-Dimensional Perovskites for High-Stability and High-Gain X-ray Detection

Far-From-Equilibrium Processing Opens Kinetic Paths for Engineering Novel Materials by Breaking Thermodynamic Limits

Monoatomic Nickel Wires via Columnar Self-Assembly of Tribenzocyclyne Nickel Complexes

Synergetic Porous Insulating and Passivation Layer Design for High-Efficiency and Stable Perovskite Solar Cells

Stepwise Structural Relaxation in Battery Active Materials

Establishing Active Cu⁺–O–Mg²⁺ Sites at the Cu₂O/CuO Interface for Efficient Electroreduction of CO₂ to C₂₊ Products

Far-From-Equilibrium Processing Opens Kinetic Paths for Engineering Novel Materials by Breaking Thermodynamic Limits

Ultrafast Photoassisted Capture of Uranium over Cu₂O/CuO Heterojunction Enabled by Rapid Interfacial Electron Transfer