CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Qinping Jian,Zixiao Guo,Leicheng Zhang,Maochun Wu,Tianshou Zhao
Metallic zinc (Zn), featuring high specific capacity, low redox potential, and low cost, is a promising anode material for next-generation rechargeable aqueous batteries. However, Zn anodes suffer from the dendrite formation and side reactions during the plating/stripping process, which severely hinder their practical applications. To simultaneously address these issues, we create a hierarchical porous framework by electroless plating a conformal nanoporous tin (Sn) layer on a copper (Cu) mesh as a host (NSH) for the Zn anode. Both experimental and numerical results reveal that the newly developed NSH offers abundant Zn nucleation sites, homogenizes both the ion flux and electric field at the electrode surface, and suppresses side reactions with the high hydrogen evolution reaction overpotential of Sn, thus leading to dendrite-free Zn deposition and a highly reversible plating/stripping process. As a result, the asymmetric Zn||NSH cell achieves a coulombic efficiency (CE) of 99.0% for over 200 cycles at 2 mA cm −2 . The cell with the pristine Cu mesh host (PCH), in comparison, exhibits a CE of 97.7% and suffers from short-circuits after 50 cycles. Moreover, the Zn@NSH anode enables the Zn-MnO 2 full cell to deliver a high capacity of 164 mAh g −1 and maintain a retention rate of 86.2% after 1200 cycles at 1 A g −1 . By contrast, the capacity of the cell with the Zn@PCH anode decays to 55.2 mAh g −1 after 800 cycles, corresponding to a retention rate of 38.1%. This work opens a new avenue to develop advanced three-dimensional Zn metal anodes for high-performance rechargeable aqueous batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
金属负极
·
水系电池
✓ 已验证
DOI
高影响因子
CURRENT APPLIED PHYSICS
·
2023
·
IF 2.4
WenXin Zhang,Hao Li,Haofei Cong,Ruifu Zhou,Yuanbin Qin,Peilong Xu,Xuhai Liu,Fengyun Wang
One-dimensional wide band-gap metal oxide semiconductors demonstrate enormous potential in high-performance ultraviolet photodetectors. Here, via tuned zinc oxide (ZnO) concentration ratio and heterojunction structure as well as decent V TH value, we electrospun tin zinc oxide (SnZnO X ) nanowires for photoelectronic conversion function. The constructed optimized photodetectors based on Sn 8 Zn 2 O X nanowires can exhibit a remarkable detectivity of 1.77 × 10 16 Jones, excellent responsivity of 2.23 × 10 3 A/W and relative high sensitivity over 10 4 . In addition to the excellent photodetection performance, Sn 8 Zn 2 O X nanowire devices exhibit nonvolatile memory effect , which can maintain the light-induced low resistance state at 5 V without light. Moreover, a voltage of 30 V was applied to Sn 8 Zn 2 O X nanowires devices to realize light-writing state switching to bias-erasing state, and the device could come back to their initial high resistance state. These results indicate SnZnO X nanowires devices possess a tremendous potential in the circuit design of the artificial visual system.
研究领域:
材料科学
·
纳米电子学
·
光电子学
·
半导体器件
·
人工视觉系统
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jiawei Long,Tianli Han,Yingyi Ding,Chaoquan Hu,Jinyun Liu
Biomimetic materials are receiving increasing attention as potential candidates for secondary battery systems owing to unique structures and properties. Here, we develop a biomimetic composite composing of sea anemone-shaped hollow SnO 2 in-situ co-coating with ZnCo 2 O 4 nanoparticles encapsulated by a carbon shell. The biomimetic SnO 2 @ZnCo 2 O 4 @C-based Li-ion battery anode shows a stable capacity of 700 mAh g −1 after 350 cycles, a Coulombic efficiency exceeding 99% and a repeatable rate-performance. Low reaction barriers and rapid diffusion kinetics of Li ions are verified by using galvanostatic intermittent titration technique analysis. Moreover, a full cell composing of a SnO 2 @ZnCo 2 O 4 @C anode and a LiCoO 2 cathode exhibits 520 mAh g −1 ; while working as a slurry battery anode, the sea anemone-shaped SnO 2 @ZnCo 2 O 4 @C also displays high capacity and Coulombic efficiency after 100 cycles. The high performances of the biomimetic composite when working at different battery systems enable it to be applicable broadly.
研究领域:
材料科学
·
能源技术
·
电化学
✓ 已验证
DOI
高影响因子
Nano Energy
·
2019
·
IF 15.548
Xueying Zheng,Wenjuan Yang,Zhongqiang Wang,Liqiang Huang,Sheng Geng,Jiayun Wen,Wei Luo,Yunhui Huang
The high theoretical capacity and earth-abundancy of metallic sodium (Na) endow it with high potential as the ultimate anode for batteries based on Na-ion chemistry. Nevertheless, dendritic Na, the unstable solid electrolyte interphase (SEI) and an infinite volume change of Na metal, drive rapid cell deterioration and potential safety hazards. In tackling these challenges, we take advantage of the spontaneous reaction between molten Na and SnO 2 that triggers the formation of a percolated Na–Sn alloy/Na 2 O framework throughout Na metal, effectively anchoring the “hostless” Na into a dual ion/electron-conductive matrix and simultaneously improving the electrode surface chemistry. By density functional theory (DFT) calculations, we validate the high “sodiophilicity” and low Na + diffusion barrier enabled by the Na–Sn alloy/Na 2 O framework. As such, stable Na plating/striping is realized in symmetric cells using both carbonate and ether-based electrolytes without any additive. The full cell paired with Na 3 V 2 (PO 4 ) 3 cathode further demonstrates superior capacity retention of 83% over 300 cycles (1C), along with a promising rate performance at 10C.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2021
·
IF 9.811
Shixun Wang,Stephen V. Kershaw,Andrey L. Rogach
In this study, conventional saturation recrystallization process was found to produce a complex mixture instead of pure Dion-Jacobson (DJ)-phase ODASnBr4 perovskite single crystals (ODA denotes protonated 1,8-octanediamine), which originated from the strong hydrogen bonding in diammonium cations and the interaction with polar hydrogen bromide solution, resulting in the formation of impurities. Thus, additional primary alcohols, including ethanol, 1-propanol, 1-butanol, and 1-pentanol, were introduced to treat that mixture with an attempt to remove undesired byproducts, while also resulting in the molecular doping and enhanced crystallinity of DJ perovskites. The formation of O–H...Br hydrogen bonds between [SnBr6]4– octahedron slabs and alcohols promoted the lattice coordination of the perovskites and the removal of undesired surface-absorbed water and byproducts, thereby achieving ODASnBr4[alcohol] perovskite microcrystals with high photoluminescence quantum yield close to 90%. Their thermal stability and oxidation resistance were also significantly enhanced as a result of improved lattice crystallinity and surface capping by dopants. The strategy introduced here offers prospects for further development of lead-free DJ perovskite materials with strong emissions and reliable stabilities.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Shukai Ding,Wei Cheng,Longming Zhang,Gaohui Du,Xiaodong Hao,Guanjian Nie,Bingshe Xu,Miao Zhang,Qingmei Su,Christophe A. Serra
Sn@Graphene composites as anode materials in Lithium-ion batteries have attracted intensive interest due to the inherent high capacity. On the other side, the high atomic ratio (Li 4.4 Sn) induces the pulverization of the electrode with cycling. Thus, suppressing pulverization by designing the structure of the materials is an essential key for improving cyclability. Applying the nanotechnologies such as electrospinning, soft/hard nano template strategy, surface modification, multi-step chemical vapor deposition (CVD), and so on has demonstrated the huge advantage on this aspect. These strategies are generally used for homogeneous dispersing Sn nanomaterials in graphene matrix or constructing the voids in the inner of the materials to obtain the mechanical buffer effect. Unfortunately, these processes induce huge energy consumption and complicated operation. To solve the issue, new nanotechnology for the composites by the bottom-up strategy (Organic Molecule Confinement Reaction (OMCR)) was shown in this report. A 3D organic nanoframes was synthesized as a graphene precursor by low energy nano emulsification and photopolymerization . SnO 2 nanoparticles@3D organic nanoframes as the composites precursor were in-situ formed in the hydrothermal reaction . After the redox process by the calcination , the Sn nanoparticles with nanovoids (~100 nm, uniform size) were homogeneously dispersed in a Two-Dimensional Laminar Matrix of graphene nanosheets (2DLM G ) by the in-situ patterning and confinement effect from the 3D organic nanoframes. The pulverization and crack of the composites were effectively suppressed, which was proved by the electrochemical testing. The Sn nanoparticles@2DLM G not delivered just the high cyclability during 200 cycles, but also firstly achieved a high specific capacity (539 mAh g −1 ) at the low loading Sn (19.58 wt%).
研究领域:
材料科学
·
能源存储技术
·
纳米技术
✓ 已验证
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2020
·Vol. 646
·期 5
·288-295
·
IF 1.24
Yalan Li,Yuandong Wu,Dajiang Mei,Thomas Doert
Three new tin coordination compounds (4,4'-Hbipy) 2 [Sn 2 (C 2 O 4 ) 3 ] ( 1 ), (4,4'-H 2 bipy)[Sn(C 2 O 4 ) 2 ] ( 2 ), and SnCl 2 (4,4'-bipy) ( 3 ) were synthesized under hydro-(solvo-)thermal conditions and their crystal structures were determined by single-crystal X-ray diffraction. Compound 1 exhibits a ionic structure based on discrete [4,4'-Hbipy] + cations and [Sn 2 (C 2 O 4 ) 3 ] 2– anions. These two units are linked via N–H ··· O hydrogen bonds to form a pseudo-one-dimensional zigzag hydrogen-bonded chain. In compound 2 , four-coordinate Sn atoms form monomeric tin dioxalato complexes, which are connected to the doubly protonated [4,4'-H 2 bipy] 2+ cations through N–H ··· O hydrogen bonded to give a one-dimensional zigzag hydrogen-bonded chain. Compound 3 forms a three-dimensional hydrogen-bonded network, in which 1 ∞ [SnCl 2 (4,4'-bipy)] linear chains are interconnected to each other by C–H ··· Cl hydrogen bonding. The solid-state UV/Vis/NIR diffuse reflectance spectroscopy shows that three compounds are broadband semiconductors. The thermogravimetric analysis evidences the thermal stability of the three compounds up to 175, 201, and 246 °C, respectively.
研究领域:
无机化学
·
材料科学
✓ 已验证
DOI
高影响因子
Materials Today Energy
·
2021
·
IF 7.311
W. Guo,Y. Zhang,X. Tong,X. Wang,L. Zhang,X. Xia,J. Tu
Aqueous zinc-ion battery is a low-cost, non-toxic, and high-safety energy storage system , which has received extensive attention in recent years. However, the Zn anode with high theoretical capacity often suffers from severe corrosion and dendrite growth during the Zn plating/stripping process, leading to severe polarization and eventually short circuits. These knotty problems severely impede further practical applications of Zn-based batteries . Herein, a robust and homogeneous metallic tin (Sn) coating is in situ built on the surface of Zn to form Zn|Sn by a facile chemical vapor deposition method to enhance reaction reversibility. The as-prepared Sn coating not only affords more robust nucleation sites of Zn and higher hydrogen evolution reaction potential, but also effectively decreases the nucleation overpotential of Zn. Accordingly, the symmetric cells with Zn|Sn anode can stably maintain an extremely low-voltage hysteresis (50 mV) in a 500 h of plating/stripping cycles. Even at a high current density of 50 mA cm −2 , the symmetric Zn|Sn cell still can operate well for 50 h. Moreover, this stable Zn|Sn anode also enables a full Zn-ion battery with outstanding rate and cyclic stability.
研究领域:
电化学储能
·
材料科学
·
能源化学
·
金属负极
·
电池技术
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2020
·
IF 2.779
Guonan Cui,Yanchun Yang,Ruilan Chen,Chengjun Zhu
Cations substitutions are known to make much significant contribution on achieving the high-quality kesterite Cu 2 ZnSn(S,Se) 4 thin films . And the optimal ratios of Mn, Ni and Co substitutions are reported to be ~0.05, belong to the low doping to reduce their defect density , which looks like to some extent the effect of Na doping. In this study, learning the research experience of alkali metal doping, we introduced the extra trace Mn 2+ ion into the precursor solution without affecting the compositions of other elements (i.e. Cu, Zn, and Sn), and the effect of trace addition on properties of the absorber layer was also studied. It was discovered that crystalline, electrical properties, and hole carrier concentration of Cu 2 ZnSn(S,Se) 4 thin films increased with an increase of Mn incorporation, and the best doping ratio of Mn/(Cu + Zn + Sn) was considered to be 0.03. In addition, the effect of extra trace Mn-doping on the film thickness and elemental compositions of Cu 2 ZnSn(S,Se) 4 absorber layer were studied in detail.
研究领域:
材料科学
·
半导体物理
·
薄膜制备
·
光伏材料
·
固体化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 23
·19614-19619
·
IF 2.324
Hu Yiwei,Chen Xinhang,Ren Xiaohui,Huang Zongyu,Qi Xiang,Zhong Jianxin
Tin disulfide (SnS 2 ) has been attracted intensive attention in the field of photoelectric conversion due to its appropriate band gap and glorious electronic mobility. The hexagon SnS 2 nanosheets has been successfully integrated through a facile one-pot hydrothermal method. SEM images, Raman spectra, atomic force microscope and X-ray diffraction patterns are measured to carry out to investigate the morphologies and microstructures of SnS 2 nanosheetsm, confirming a good crystallized SnS 2 . Then, the photochemical activity of as-prepared SnS 2 nanosheets were tested in the electrolyte of Na 2 SO 4 . Photoelectrochemical tests demonstrate that the photocurrent density of as-prepared hexagon SnS 2 nanosheets (1.66 µA/cm 2 at a light intensity of 140 mW/cm 2 ) is hugely increased with increasing light intensity. Furthermore, after 50 cycles, the photocurrent density does not change significantly, indicating that the as-prepared SnS 2 nanosheets possesses superior stabilities. The outstanding photocatalytic performances of SnS 2 nanosheets are not only resulted from its huge specific surface area, which can harvest more light and provide more active sites, but also attributed to its superior charge mobility, which can facilitate the separation photogenerated electron–hole pairs and the charge transfer between SnS 2 nanosheets and the electrode. The most important is that our work reveals the hexagonal SnS 2 nanosheets not only possess superior photoelectrochemical properties, but also have great potential applications in energy conversion and photodetector fields.
研究领域:
材料科学
·
光催化
·
能源转换
·
纳米材料
·
光电化学
✓ 已验证
DOI
高影响因子
Chinese Physics B
·
2023
·Vol. 32
·期 11
·117802
·
IF 1.7
Jiayu Tan,Yixuan Zhou,De Lu,Xukun Feng,Yuqi Liu,Mengen Zhang,Fangzhengyi Lu,Yuanyuan Huang,Xinlong Xu
Tin halide perovskites recently have attracted extensive research attention due to their similar electronic and band structures but non-toxicity compared with their lead analogues. In this work, we prepare high-quality CsSnX3 (X = Br, I) microplates with lateral sizes of around 1–4 μm by chemical vapor deposition and investigate their low-temperature photoluminescence (PL) properties. A remarkable splitting of PL peaks of the CsSnBr3 microplate is observed at low temperatures. Besides the possible structural phase transition at below 70 K, the multi-peak fittings using Gauss functions and the power-dependent saturation phenomenon suggest that the PL could also be influenced by the conversion from the emission of bound excitons into free excitons. With the increase of temperature, the peak position shows a blueshift tendency for CsSnI3, which is governed by thermal expansion. However, the peak position of the CsSnBr3 microplate exhibits a transition from redshift to blueshift at ∼160 K. The full width at half maximum of CsSnX3 broadens with increasing temperature, and the fitting results imply that longitudinal optical phonons dominate the electron–phonon coupling and the coupling strength is much more robust in CsSnBr3 than in CsSnI3. The PL intensity of CsSnX3 microplates is suppressed due to the enhanced non-radiative relaxation and exciton dissociation competing with radiative recombination. According to the Arrhenius law, the exciton binding energy of CsSnBr3 is ∼38.4 meV, slightly smaller than that of CsSnI3.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
ORGANIC ELECTRONICS
·
2017
·
IF 3.399
Cuncun Wu,Ziru Huang,Yihao He,Wei Luo,Hungkit Ting,Tieyi Li,Weihai Sun,Qiaohui Zhang,Zhijian Chen,Lixin Xiao
Recently, perovskite solar cells have attracted tremendous research interest due to their amazing light to electric power conversion efficiency (PCE). However, most high performance devices usually use mesoporous TiO 2 as the electron transport layer (ETL), which increases cost for practical application. Here, TiO 2 /SnO x Cl y double layer was employed as the ETL for planar perovskite solar cells . Compared with bare TiO 2 , perovskite solar cell based on TiO 2 /SnO x Cl y shows drastically improved power conversion efficiency and reduced hysteresis. These improvements are attributed to TiO 2 /SnO x Cl y which could enhance electron extraction and reduce surface trap-state.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）