Nano-Micro Letters最新文献_第3页

High-Performance Silicon-Rich Microparticle Anodes for Lithium-Ion Batteries Enabled by Internal Stress Mitigation 通过内部应力减轻实现的用于锂离子电池的高性能富硅微粒阳极。

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-10-09 DOI: 10.1007/s40820-023-01190-7

Yao Gao, Lei Fan, Rui Zhou, Xiaoqiong Du, Zengbao Jiao, Biao Zhang

{"title":"High-Performance Silicon-Rich Microparticle Anodes for Lithium-Ion Batteries Enabled by Internal Stress Mitigation","authors":"Yao Gao, Lei Fan, Rui Zhou, Xiaoqiong Du, Zengbao Jiao, Biao Zhang","doi":"10.1007/s40820-023-01190-7","DOIUrl":"10.1007/s40820-023-01190-7","url":null,"abstract":"<div><p>Si is a promising anode material for Li ion batteries because of its high specific capacity, abundant reserve, and low cost. However, its rate performance and cycling stability are poor due to the severe particle pulverization during the lithiation/delithiation process. The high stress induced by the Li concentration gradient and anisotropic deformation is the main reason for the fracture of Si particles. Here we present a new stress mitigation strategy by uniformly distributing small amounts of Sn and Sb in Si micron-sized particles, which reduces the Li concentration gradient and realizes an isotropic lithiation/delithiation process. The Si<sub>8.5</sub>Sn<sub>0.5</sub>Sb microparticles (mean particle size: 8.22 μm) show over 6000-fold and tenfold improvements in electronic conductivity and Li diffusivity than Si particles, respectively. The discharge capacities of the Si<sub>8.5</sub>Sn<sub>0.5</sub>Sb microparticle anode after 100 cycles at 1.0 and 3.0 A g<sup>−1</sup> are 1.62 and 1.19 Ah g<sup>−1</sup>, respectively, corresponding to a retention rate of 94.2% and 99.6%, respectively, relative to the capacity of the first cycle after activation. Multicomponent microparticle anodes containing Si, Sn, Sb, Ge and Ag prepared using the same method yields an ultra-low capacity decay rate of 0.02% per cycle for 1000 cycles at 1 A g<sup>−1</sup>, corroborating the proposed mechanism. The stress regulation mechanism enabled by the industry-compatible fabrication methods opens up enormous opportunities for low-cost and high-energy–density Li-ion batteries.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":48779,"journal":{"name":"Nano-Micro Letters","volume":"15 1","pages":""},"PeriodicalIF":26.6,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10562352/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41093521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green Vertical-Cavity Surface-Emitting Lasers Based on InGaN Quantum Dots and Short Cavity 基于InGaN量子点和短腔的绿色垂直腔面发射激光器。

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-10-09 DOI: 10.1007/s40820-023-01189-0

Tao Yang, Yan-Hui Chen, Ya-Chao Wang, Wei Ou, Lei-Ying Ying, Yang Mei, Ai-Qin Tian, Jian-Ping Liu, Hao-Chung Guo, Bao-Ping Zhang

{"title":"Green Vertical-Cavity Surface-Emitting Lasers Based on InGaN Quantum Dots and Short Cavity","authors":"Tao Yang, Yan-Hui Chen, Ya-Chao Wang, Wei Ou, Lei-Ying Ying, Yang Mei, Ai-Qin Tian, Jian-Ping Liu, Hao-Chung Guo, Bao-Ping Zhang","doi":"10.1007/s40820-023-01189-0","DOIUrl":"10.1007/s40820-023-01189-0","url":null,"abstract":"<div><p>Room temperature low threshold lasing of green GaN-based vertical cavity surface emitting laser (VCSEL) was demonstrated under continuous wave (CW) operation. By using self-formed InGaN quantum dots (QDs) as the active region, the VCSEL emitting at 524.0 nm has a threshold current density of 51.97 A cm<sup>−2</sup>, the lowest ever reported. The QD epitaxial wafer featured with a high IQE of 69.94% and the δ-function-like density of states plays an important role in achieving low threshold current. Besides, a short cavity of the device (~ 4.0 λ) is vital to enhance the spontaneous emission coupling factor to 0.094, increase the gain coefficient factor, and decrease the optical loss. To improve heat dissipation, AlN layer was used as the current confinement layer and electroplated copper plate was used to replace metal bonding. The results provide important guidance to achieving high performance GaN-based VCSELs.</p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":48779,"journal":{"name":"Nano-Micro Letters","volume":"15 1","pages":""},"PeriodicalIF":26.6,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10562330/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41105121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effectively Modulating Oxygen Vacancies in Flower-Like δ-MnO2 Nanostructures for Large Capacity and High-Rate Zinc-Ion Storage 有效调节花状δ-MnO2纳米结构中的氧空位，用于大容量和高速率锌离子存储。

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-10-07 DOI: 10.1007/s40820-023-01194-3

Yiwei Wang, Yuxiao Zhang, Ge Gao, Yawen Fan, Ruoxin Wang, Jie Feng, Lina Yang, Alan Meng, Jian Zhao, Zhenjiang Li

{"title":"Effectively Modulating Oxygen Vacancies in Flower-Like δ-MnO2 Nanostructures for Large Capacity and High-Rate Zinc-Ion Storage","authors":"Yiwei Wang, Yuxiao Zhang, Ge Gao, Yawen Fan, Ruoxin Wang, Jie Feng, Lina Yang, Alan Meng, Jian Zhao, Zhenjiang Li","doi":"10.1007/s40820-023-01194-3","DOIUrl":"10.1007/s40820-023-01194-3","url":null,"abstract":"<p>In recent years, manganese-based oxides as an advanced class of cathode materials for zinc-ion batteries (ZIBs) have attracted a great deal of attentions from numerous researchers. However, their slow reaction kinetics, limited active sites and poor electrical conductivity inevitably give rise to the severe performance degradation. To solve these problems, herein, we introduce abundant oxygen vacancies into the flower-like <i>δ</i>-MnO<sub>2</sub> nanostructure and effectively modulate the vacancy defects to reach the optimal level (<i>δ</i>-MnO<sub>2−<i>x</i></sub>−2.0). The smart design intrinsically tunes the electronic structure, guarantees ion chemisorption–desorption equilibrium and increases the electroactive sites, which not only effectively accelerates charge transfer rate during reaction processes, but also endows more redox reactions, as verified by first-principle calculations. These merits can help the fabricated <i>δ</i>-MnO<sub>2−<i>x</i></sub>−2.0 cathode to present a large specific capacity of 551.8 mAh g<sup>−1</sup> at 0.5 A g<sup>−1</sup>, high-rate capability of 262.2 mAh g<sup>−1</sup> at 10 A g<sup>−1</sup> and an excellent cycle lifespan (83% of capacity retention after 1500 cycles), which is far superior to those of the other metal compound cathodes. In addition, the charge/discharge mechanism of the <i>δ</i>-MnO<sub>2−<i>x</i></sub>−2.0 cathode has also been elaborated through ex situ techniques. This work opens up a new pathway for constructing the next-generation high-performance ZIBs cathode materials. </p>","PeriodicalId":48779,"journal":{"name":"Nano-Micro Letters","volume":"15 1","pages":""},"PeriodicalIF":26.6,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10560176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41100206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MXene Lubricated Tribovoltaic Nanogenerator with High Current Output and Long Lifetime MXene润滑的具有高电流输出和长寿命的摩擦学纳米发电机。

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-10-07 DOI: 10.1007/s40820-023-01198-z

Wenyan Qiao, Linglin Zhou, Zhihao Zhao, Peiyuan Yang, Di Liu, Xiaoru Liu, Jiaqi Liu, Dongyang Liu, Zhong Lin Wang, Jie Wang

{"title":"MXene Lubricated Tribovoltaic Nanogenerator with High Current Output and Long Lifetime","authors":"Wenyan Qiao, Linglin Zhou, Zhihao Zhao, Peiyuan Yang, Di Liu, Xiaoru Liu, Jiaqi Liu, Dongyang Liu, Zhong Lin Wang, Jie Wang","doi":"10.1007/s40820-023-01198-z","DOIUrl":"10.1007/s40820-023-01198-z","url":null,"abstract":"<div><h2>Highlights</h2><div>\u0000 \u0000 <ul>\u0000 <li>\u0000 <p>Successfully solves the key issue of tribovoltaic nanogenerators (TVNGs) lifetime (90,000 cycles) and improves its output current density (754 mA m<sup>−2</sup>) simultaneously.</p>\u0000 </li>\u0000 <li>\u0000 <p>Conductive polar liquid with MXene as additive is proposed as the dominant factor in enhancing the electrical output performance and durability of TVNG simultaneously.</p>\u0000 </li>\u0000 <li>\u0000 <p>The mechanism of lubricated TVNG with enhanced output performance is explained from the perspective of solution polarity at the first time.</p>\u0000 </li>\u0000 <li>\u0000 <p>Mxene solution exhibits universality in different types of semiconductor systems (Cu and <i>P</i>-type Si, and Cu and <i>N</i>-GaAs as material pairs).</p>\u0000 </li>\u0000 </ul>\u0000 </div></div>","PeriodicalId":48779,"journal":{"name":"Nano-Micro Letters","volume":"15 1","pages":""},"PeriodicalIF":26.6,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10560292/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41097453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graphene Quantum Dot-Mediated Atom-Layer Semiconductor Electrocatalyst for Hydrogen Evolution 石墨烯量子点介导的原子层半导体析氢电催化剂。

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-09-28 DOI: 10.1007/s40820-023-01182-7

Bingjie Hu, Kai Huang, Bijun Tang, Zhendong Lei, Zeming Wang, Huazhang Guo, Cheng Lian, Zheng Liu, Liang Wang

引用次数: 0

Artificial Macrophage with Hierarchical Nanostructure for Biomimetic Reconstruction of Antitumor Immunity 具有分级纳米结构的人工巨噬细胞用于抗肿瘤免疫的仿生重建。

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-09-22 DOI: 10.1007/s40820-023-01193-4

Henan Zhao, Renyu Liu, Liqiang Wang, Feiying Tang, Wansong Chen, You-Nian Liu

{"title":"Artificial Macrophage with Hierarchical Nanostructure for Biomimetic Reconstruction of Antitumor Immunity","authors":"Henan Zhao, Renyu Liu, Liqiang Wang, Feiying Tang, Wansong Chen, You-Nian Liu","doi":"10.1007/s40820-023-01193-4","DOIUrl":"10.1007/s40820-023-01193-4","url":null,"abstract":"<div><p>Artificial cells are constructed from synthetic materials to imitate the biological functions of natural cells. By virtue of nanoengineering techniques, artificial cells with designed biomimetic functions provide alternatives to natural cells, showing vast potential for biomedical applications. Especially in cancer treatment, the deficiency of immunoactive macrophages results in tumor progression and immune resistance. To overcome the limitation, a BaSO<sub>4</sub>@ZIF-8/transferrin (TRF) nanomacrophage (NMΦ) is herein constructed as an alternative to immunoactive macrophages. Alike to natural immunoactive macrophages, NMΦ is stably retained in tumors through the specific affinity of TRF to tumor cells. Zn<sup>2+</sup> as an “artificial cytokine” is then released from the ZIF-8 layer of NMΦ under tumor microenvironment. Similar as proinflammatory cytokines, Zn<sup>2+</sup> can trigger cell anoikis to expose tumor antigens, which are selectively captured by the BaSO<sub>4</sub> cavities. Therefore, the hierarchical nanostructure of NMΦs allows them to mediate immunogenic death of tumor cells and subsequent antigen capture for T cell activation to fabricate long-term antitumor immunity. As a proof-of-concept, the NMΦ mimics the biological functions of macrophage, including tumor residence, cytokine release, antigen capture and immune activation, which is hopeful to provide a paradigm for the design and biomedical applications of artificial cells.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":48779,"journal":{"name":"Nano-Micro Letters","volume":"15 1","pages":""},"PeriodicalIF":26.6,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10516848/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41096013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetic Limits of Graphite Anode for Fast-Charging Lithium-Ion Batteries 快速充电锂离子电池石墨阳极的动力学极限。

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-09-22 DOI: 10.1007/s40820-023-01183-6

Suting Weng, Gaojing Yang, Simeng Zhang, Xiaozhi Liu, Xiao Zhang, Zepeng Liu, Mengyan Cao, Mehmet Nurullah Ateş, Yejing Li, Liquan Chen, Zhaoxiang Wang, Xuefeng Wang

引用次数: 0

Micro–Nano Water Film Enabled High-Performance Interfacial Solar Evaporation 微纳米水膜实现高性能界面太阳能蒸发。

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-09-22 DOI: 10.1007/s40820-023-01191-6

Zhen Yu, Yuqing Su, Ruonan Gu, Wei Wu, Yangxi Li, Shaoan Cheng

引用次数: 0

Recent Advances in Multifunctional Reticular Framework Nanoparticles: A Paradigm Shift in Materials Science Road to a Structured Future 多功能网状结构纳米颗粒的最新进展：材料科学通往结构化未来之路的范式转变。

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-09-22 DOI: 10.1007/s40820-023-01180-9

Maryam Chafiq, Abdelkarim Chaouiki, Young Gun Ko

引用次数: 0

Adsorption Site Regulations of [W–O]-Doped CoP Boosting the Hydrazine Oxidation-Coupled Hydrogen Evolution at Elevated Current Density 高电流密度下[W-O]掺杂CoP促进肼氧化耦合析氢的吸附位点调控

IF 26.6 1区材料科学

Nano-Micro Letters Pub Date : 2023-09-14 DOI: 10.1007/s40820-023-01185-4

Ge Meng, Ziwei Chang, Libo Zhu, Chang Chen, Yafeng Chen, Han Tian, Wenshu Luo, Wenping Sun, Xiangzhi Cui, Jianlin Shi

{"title":"Adsorption Site Regulations of [W–O]-Doped CoP Boosting the Hydrazine Oxidation-Coupled Hydrogen Evolution at Elevated Current Density","authors":"Ge Meng, Ziwei Chang, Libo Zhu, Chang Chen, Yafeng Chen, Han Tian, Wenshu Luo, Wenping Sun, Xiangzhi Cui, Jianlin Shi","doi":"10.1007/s40820-023-01185-4","DOIUrl":"10.1007/s40820-023-01185-4","url":null,"abstract":"<div><p>Hydrazine oxidation reaction (HzOR) assisted hydrogen evolution reaction (HER) offers a feasible path for low power consumption to hydrogen production. Unfortunately however, the total electrooxidation of hydrazine in anode and the dissociation kinetics of water in cathode are critically depend on the interaction between the reaction intermediates and surface of catalysts, which are still challenging due to the totally different catalytic mechanisms. Herein, the [W–O] group with strong adsorption capacity is introduced into CoP nanoflakes to fabricate bifunctional catalyst, which possesses excellent catalytic performances towards both HER (185.60 mV at 1000 mA cm<sup>−2</sup>) and HzOR (78.99 mV at 10,00 mA cm<sup>−2</sup>) with the overall electrolyzer potential of 1.634 V lower than that of the water splitting system at 100 mA cm<sup>−2</sup>. The introduction of [W–O] groups, working as the adsorption sites for H<sub>2</sub>O dissociation and N<sub>2</sub>H<sub>4</sub> dehydrogenation, leads to the formation of porous structure on CoP nanoflakes and regulates the electronic structure of Co through the linked O in [W–O] group as well, resultantly boosting the hydrogen production and HzOR. Moreover, a proof-of-concept direct hydrazine fuel cell-powered H<sub>2</sub> production system has been assembled, realizing H<sub>2</sub> evolution at a rate of 3.53 mmol cm<sup>−2</sup> h<sup>−1</sup> at room temperature without external electricity supply.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":48779,"journal":{"name":"Nano-Micro Letters","volume":"15 1","pages":""},"PeriodicalIF":26.6,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10501108/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10252719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0