Rare Metals最新文献_第3页

Tris-buffered efficacy: enhancing stability and reversibility of Zn anode by efficient modulation at Zn/electrolyte interface 三缓冲功效：通过在锌/电解质界面上进行有效调节，提高锌阳极的稳定性和可逆性

IF 8.8 1区材料科学

Rare Metals Pub Date : 2024-09-05 DOI: 10.1007/s12598-024-02990-5

Yong-Jian Wang, Su-Hong Li, Lin Li, Jian-Yong Ren, Ling-Di Shen, Chao Lai

{"title":"Tris-buffered efficacy: enhancing stability and reversibility of Zn anode by efficient modulation at Zn/electrolyte interface","authors":"Yong-Jian Wang, Su-Hong Li, Lin Li, Jian-Yong Ren, Ling-Di Shen, Chao Lai","doi":"10.1007/s12598-024-02990-5","DOIUrl":"https://doi.org/10.1007/s12598-024-02990-5","url":null,"abstract":"Aqueous zinc-ion batteries (AZIBs) have developed rapidly in recent years but still face several challenges, including zinc dendrites growth, hydrogen evolution reaction, passivation and corrosion. The pH of the electrolyte plays a crucial role in these processes, significantly impacting the stability and reversibility of Zn2+ deposition. Therefore, pH-buffer tris (hydroxymethyl) amino methane (tris) is chosen as a versatile electrolyte additive to address these issues. Tris can buffer electrolyte pH at Zn/electrolyte interface by protonated/deprotonated nature of amino group, optimize the coordination environment of zinc solvate ions by its strong interaction with zinc ions, and simultaneously create an in-situ stable solid electrolyte interface membrane on the zinc anode surface. These synergistic effects effectively restrain dendrite formation and side reactions, resulting in a highly stable and reversible Zn anode, thereby enhancing the electrochemical performance of AZIBs. The Zn||Zn battery with 0.15 wt% tris additives maintains stable cycling for 1500 h at 4 mA·cm−2 and 1120 h at 10 mA·cm−2. Furthermore, the Coulombic efficiency reaches ~ 99.2% at 4 mA·cm−2@1 mAh·cm−2. The Zn||NVO full batteries also demonstrated a stable specific capacity and exceptional capacity retention.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"10 1","pages":""},"PeriodicalIF":8.8,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced strength of a high-conductivity Cu-Cr alloy by Sc addition 通过添加 Sc 增强高导电率铜-铬合金的强度

IF 9.6 1区材料科学

Rare Metals Pub Date : 2024-09-04 DOI: 10.1007/s12598-024-02947-8

Tao Huang, Chao-Min Zhang, Ying-Xuan Ma, Shu-Guo Jia, Ke-Xing Song, Yan-Jun Zhou, Xiu-Hua Guo, Zhen-Peng Xiao, Hui-Wen Guo

{"title":"Enhanced strength of a high-conductivity Cu-Cr alloy by Sc addition","authors":"Tao Huang, Chao-Min Zhang, Ying-Xuan Ma, Shu-Guo Jia, Ke-Xing Song, Yan-Jun Zhou, Xiu-Hua Guo, Zhen-Peng Xiao, Hui-Wen Guo","doi":"10.1007/s12598-024-02947-8","DOIUrl":"10.1007/s12598-024-02947-8","url":null,"abstract":"<div>A new Cu-Cr-Sc alloy was designed, prepared and subjected to deformation heat treatment. Transmission electron microscopy (TEM), electron backscatter diffraction (EBSD) and X-ray diffraction (XRD) were employed to investigate the effects of Sc on the microstructural changes in the Cu-Cr alloy in different states, examine the changes in the precipitates during aging, reveal the intrinsic correlation between the structure and property in the peak aging state, and evaluate the Sc distribution in the Cu-Cr alloy. The addition of Sc significantly increased the yield strength of the Cu-Cr alloy by ~ 24.6% after aging at 480 °C for 1 h, while it had a high electrical conductivity of 81.5% international annealed copper standard (IACS). This enhancement was attributed to the effective inhibition of Cr phase coarsening and recrystallization through the addition of Sc, which strengthened the alloy. Furthermore, in the Cu-Cr-Sc alloy, most of the Sc atoms precipitated as the Cu4Sc phase, with a small amount of Sc segregating at the grain boundaries to pin them. This grain boundary pinning helped to inhibit grain growth and further improve the strength. The main strengthening mechanisms identified in Cu-Cr-Sc alloys were dislocation strengthening and precipitation strengthening.<h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"43 11","pages":"6054 - 6067"},"PeriodicalIF":9.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unlocking oxygen vacancy-rich high-entropy oxides in upgrading composite solid electrolyte 释放升级复合固体电解质中的富氧空位高熵氧化物

IF 8.8 1区材料科学

Rare Metals Pub Date : 2024-09-04 DOI: 10.1007/s12598-024-02961-w

Jun Cheng, Nai-Xuan Ci, Hong-Qiang Zhang, Zhen Zeng, Xuan Zhou, Yuan-Yuan Li, Hua-Jun Qiu, Wei Zhai, Dan-Dan Gao, Li-Jie Ci, De-Ping Li

{"title":"Unlocking oxygen vacancy-rich high-entropy oxides in upgrading composite solid electrolyte","authors":"Jun Cheng, Nai-Xuan Ci, Hong-Qiang Zhang, Zhen Zeng, Xuan Zhou, Yuan-Yuan Li, Hua-Jun Qiu, Wei Zhai, Dan-Dan Gao, Li-Jie Ci, De-Ping Li","doi":"10.1007/s12598-024-02961-w","DOIUrl":"https://doi.org/10.1007/s12598-024-02961-w","url":null,"abstract":"Recently, high-entropy materials are attracting enormous attention in battery applications, encompassing both electrode materials and solid electrolytes, due to the pliability and diversification in material composition and electronic structure. Theoretically, the rapid ion transport and the abundance of surface defects in high-entropy materials suggest a potential for enhancing the performance of composite solid-state electrolytes (CPEs). Herein, using a high-entropy oxide (HEO) filler to assess its potential contributions to CPEs is proposed. The distinctive structural distortions in HEO significantly improve the ionic conductivity (5 × 10−4 S·cm−1 at 60 °C) and Li-ion transference number (0.57) of CPEs. Furthermore, the enhanced Li-ion transport capability extends the critical current density from 0.6 to 1.5 mA·cm−2 in Li/Li symmetric cells. In addition, all-solid-state batteries incorporating the HEO-modified CPEs exhibit superior rate performance and cycling stability. The work will enrich the application of HEOs in CPEs and provide fundamental understanding.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"23 1","pages":""},"PeriodicalIF":8.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A pore-confined strategy for synthesizing CoFe nanoparticles in mesoporous biocarbon matrix as advanced bifunctional oxygen electrocatalyst for zinc–air battery 在介孔生物碳基质中合成 CoFe 纳米粒子的孔隙封闭策略，作为锌-空气电池的先进双功能氧电催化剂

IF 9.6 1区材料科学

Rare Metals Pub Date : 2024-09-04 DOI: 10.1007/s12598-024-02969-2

Xiang-Jun Zheng, Hong-Yu Gong, Na Zhang, Wen-Hua Shi, Qing Sun, Yu-Hang Qian, Li-Kun Jiang, Xue-Cheng Cao, Rui-Zhi Yang, Chang-Zhou Yuan

{"title":"A pore-confined strategy for synthesizing CoFe nanoparticles in mesoporous biocarbon matrix as advanced bifunctional oxygen electrocatalyst for zinc–air battery","authors":"Xiang-Jun Zheng, Hong-Yu Gong, Na Zhang, Wen-Hua Shi, Qing Sun, Yu-Hang Qian, Li-Kun Jiang, Xue-Cheng Cao, Rui-Zhi Yang, Chang-Zhou Yuan","doi":"10.1007/s12598-024-02969-2","DOIUrl":"10.1007/s12598-024-02969-2","url":null,"abstract":"Designing rational transition-metal/carbon composites with highly dispersed and firmly anchored nanoparticles (NPs) to prevent agglomeration and shedding is crucial for realizing excellent electrocatalytic performances. Herein, a biomass pore-confined strategy based on mesoporous willow catkin is explored to obtain uniformly dispersed CoFe NPs in N-doped carbon nanotubes and hollow carbon fibers (CoFe@N-CNTs/HCFs). The resultant catalyst exhibits enhanced electrocatalytic performance, which affords a half-wave potential of 0.86 V (vs. RHE) with a limited current density of 6.0 mA·cm−2 for oxygen reduction reaction and potential of 1.67 V (vs. RHE) at 10 mA·cm−2 in 0.1 M KOH for oxygen evolution reaction. When applied to rechargeable zinc–air batteries, a maximum power density of 340 mW·cm−2 and long-term cyclic durability over 800 h are achieved. Such superior bifunctional electrocatalytic activities are ascribed to the biocarbon matrix with abundant mesopores and unobstructed hollow channels, CoFe NPs with high dispersion and controllable nanoscale and the hybrid composite with optimized electronic structure. This work presents an effective approach for constraining the size and dispersion of NPs in a low-cost biocarbon substrate, offering valuable insights for designing advanced oxygen electrocatalysts.","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"43 11","pages":"5757 - 5768"},"PeriodicalIF":9.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient visible-light-driven hydrogen production with Ag-doped flower-like ZnIn2S4 microspheres 利用掺银花状 ZnIn2S4 微球在可见光下高效制氢

IF 8.8 1区材料科学

Rare Metals Pub Date : 2024-09-03 DOI: 10.1007/s12598-024-02979-0

Man Yang, Xiao-Qiang Zhan, De-Liu Ou, Lin Wang, Lu-Lu Zhao, Hong-Li Yang, Zi-Yi Liao, Wei-You Yang, Guo-Zhi Ma, Hui-Lin Hou

{"title":"Efficient visible-light-driven hydrogen production with Ag-doped flower-like ZnIn2S4 microspheres","authors":"Man Yang, Xiao-Qiang Zhan, De-Liu Ou, Lin Wang, Lu-Lu Zhao, Hong-Li Yang, Zi-Yi Liao, Wei-You Yang, Guo-Zhi Ma, Hui-Lin Hou","doi":"10.1007/s12598-024-02979-0","DOIUrl":"https://doi.org/10.1007/s12598-024-02979-0","url":null,"abstract":"The zinc indium sulfide (ZnIn2S4) semiconductors have garnered significant interest in photocatalysis due to their environmentally friendly characteristics, appropriate bandgap, and high absorption coefficient. However, the exploration of advanced strategies to realize the effective and tailored doping still poses significant challenges in enhancing hydrogen evolution performance. In this work, a mild cation exchange strategy is reported to incorporate Ag cations into flower-like ZnIn2S4 microspheres, enabling the selective replacement of Zn atoms by Ag. Remarkably, the as-fabricated Ag-ZnIn2S4 exhibited exceptional photocatalytic hydrogen production performance, achieving a rate of 8098 μmol·g−1· h−1 under visible light irradiation. This is 4 times than that of pristine ZnIn2S4 (2002 μmol·g−1· h−1), and stands as the highest one among metal-doped-ZnIn2S4 photocatalysts ever reported. Along with the theoretical calculations, it has been confirmed that the enhanced photocatalytic hydrogen generation behavior can primarily be attributed to the synergistic effect with improved light absorption, reduced adsorption energy, increased active sites and optimized charge carrier transfer, induced by the cation exchange with Ag in ZnIn2S4. This work might provide some valuable insights on the design and development of highly efficient visible light driven photocatalysts for water splitting applications.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"47 1","pages":""},"PeriodicalIF":8.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biological ion channel inspired interfacial protection layer for high-performance zinc-ion batteries 用于高性能锌离子电池的生物离子通道启发界面保护层

IF 8.8 1区材料科学

Rare Metals Pub Date : 2024-09-03 DOI: 10.1007/s12598-024-02966-5

Kai-Xin Wang, Ru-Duan Yuan, Yu-Ting He, Sheng-Hao Reng, Qian-Zhi Gou, Si-Da Zhang, Jiang-Bin Deng, Zi-Ga Luogu, Zhao-Yu Chen, Xing-Xing Gu, Meng Li

{"title":"Biological ion channel inspired interfacial protection layer for high-performance zinc-ion batteries","authors":"Kai-Xin Wang, Ru-Duan Yuan, Yu-Ting He, Sheng-Hao Reng, Qian-Zhi Gou, Si-Da Zhang, Jiang-Bin Deng, Zi-Ga Luogu, Zhao-Yu Chen, Xing-Xing Gu, Meng Li","doi":"10.1007/s12598-024-02966-5","DOIUrl":"https://doi.org/10.1007/s12598-024-02966-5","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The inherent safety, high theoretical specific capacity and low raw material cost of aqueous batteries make them potential candidates in large-scale energy storage. However, uncontrolled dendrite growth, parasitic reactions and sluggish mass transfer on the anode-electrolyte interface are the main challenges restricting the application prospect of aqueous zinc-ion batteries. In general, eukaryotic cells utilize specific ion channels to achieve ion migration with the merits of low energy consumption and rapid speed. Herein, migrating the concept of ion channels to aqueous batteries, a crown species encapsulated zeolitic imidazolate framework (ZIF) interfacial layer (denoted as ZIF@Crown) was ex situ decorated onto the Zn anode. Similar to biological ion channels, the ZIF@Crown layer can homogenize the distribution of Zn2+ on the anode, accelerate the desolvation of hydrated Zn2+ and reduce the energy barrier for Zn2+ deposition, which were verified by theoretical calculations and experimental characterizations. Benefiting from these efficacious modulation mechanisms, the Zn@ZIF@Crown symmetrical cell could achieve a long calendar life of over 1900 h and the Zn@ZIF@Crown||Cu also sustained 600 cycles with a high Coulombic efficiency (97%). Furthermore, the full cells containing ZIF@Crown layer exhibit desirable electrochemical performance. This work provides an innovative avenue toward the optimization of aqueous batteries via bionic interfacial engineering.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"47 1","pages":""},"PeriodicalIF":8.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hollow tubular-structured molybdenum diselenide/carbon hybrid decorated by titanium dioxide nanoparticles for superior lithium-ion storage 用二氧化钛纳米颗粒装饰的中空管状结构二硒化钼/碳混合物，可实现卓越的锂离子存储功能

IF 8.8 1区材料科学

Rare Metals Pub Date : 2024-09-03 DOI: 10.1007/s12598-024-02980-7

Ren-Quan Hu, Yi-Fan Qin, Jing-Xuan Li, Peng Zhang, Ning Zhao, Teng Wang, Ya-Qi Xu, Qing-Yang Mu, Yong Yang

{"title":"Hollow tubular-structured molybdenum diselenide/carbon hybrid decorated by titanium dioxide nanoparticles for superior lithium-ion storage","authors":"Ren-Quan Hu, Yi-Fan Qin, Jing-Xuan Li, Peng Zhang, Ning Zhao, Teng Wang, Ya-Qi Xu, Qing-Yang Mu, Yong Yang","doi":"10.1007/s12598-024-02980-7","DOIUrl":"https://doi.org/10.1007/s12598-024-02980-7","url":null,"abstract":"One-dimensional nanomaterials with hollow structures could provide large space for ion storage and charge accumulation. Herein, TiO2/MoSe2-Carbon nanotube composite (NT) materials were designed and fabricated by the template method and the chelation coordination reaction. The stability and conductivity were improved by the presence of titanium and hollow tubular-architecture carbon in the whole structure. As a result, the as-prepared TiO2/MoSe2-Carbon hybrid achieved a high-rate performance of 760.0 mAh·g−1 at a current density of 0.1 A·g−1, while still obtaining stability after 300 charge/discharge cycles. The enhancement of the lithium storage capacity mainly contributed to the acceleration of the electron conductivity and the storage kinetics. Moreover, the hollow structure reduced the volume strain and stress caused by the rapid insertion and removal of lithium ions, which ensured the favorable stability of lithium storage. The experiment shows that the kinetic of the TiO2/MoSe2-carbon hybrid during the lithium storage process is dominated by the pseudocapacitance mechanism. This work provides a new idea and scheme for the design and preparation of hierarchical nanotube composite electrode materials.<h3 data-test=\"abstract-sub-heading\">Graphic Abstract</h3>\u0000","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"9 1","pages":""},"PeriodicalIF":8.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxygen-assisted recoverable hydrogen sensor based on sensing gate field effect transistor with ppb-level detection ability 基于传感栅场效应晶体管的氧气辅助可回收氢气传感器，具有 ppb 级检测能力

IF 8.8 1区材料科学

Rare Metals Pub Date : 2024-09-03 DOI: 10.1007/s12598-024-02976-3

Yi-Xi Wang, Bin Liu, Bo-Hao Liu, Yong Zhang

{"title":"Oxygen-assisted recoverable hydrogen sensor based on sensing gate field effect transistor with ppb-level detection ability","authors":"Yi-Xi Wang, Bin Liu, Bo-Hao Liu, Yong Zhang","doi":"10.1007/s12598-024-02976-3","DOIUrl":"https://doi.org/10.1007/s12598-024-02976-3","url":null,"abstract":"The rise in gas leakage incidents underscores the urgent need for advanced gas-sensing platforms with ultra-low concentration detection capability. Sensing gate field effect transistor (FET) gas sensors, renowned for the gas-induced signal amplification without directly exposing the channel to the ambient environment, play a pivotal role in detecting trace-level hazardous gases with high sensitivity and good stability. In this work, carbon nanotubes are employed as the conducting channel, and yttrium oxide (Y2O3) is utilized as the gate dielectric layer. Noble metal Pd is incorporated as a sensing gate for hydrogen (H2) detection, leveraging its catalytic properties and unique adsorption capability. The fabricated carbon-based FET gas sensor demonstrates a remarkable detection limit of 20 × 10–9 for H2 under an air environment, enabling early warning in case of gas leakage. Moreover, the as-prepared sensor exhibited good selectivity, repeatability, and anti-humidity properties. Further experiments elucidate the interaction between H2 and sensing electrode under an air/nitrogen environment, providing insights into the underlying oxygen-assisted recoverable sensing mechanism. It is our aspiration for this research to establish a robust experimental foundation for achieving high performance and highly integrated fabrication of trace gas sensors.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"19 1","pages":""},"PeriodicalIF":8.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

N/O dual coordination of cobalt single atom for fast kinetics sodium-sulfur batteries 钴单原子的 N/O 双配位，用于快速动力学钠硫电池

IF 9.6 1区材料科学

Rare Metals Pub Date : 2024-09-02 DOI: 10.1007/s12598-024-02975-4

Peng Hu, Yi-Fei Wu, Xin-Peng Gao, Long Huang, Bin-Bin Cai, Yu-Xian Liu, Yao Ma, Shan Jiang, Fei Wang, Feng-Ping Xiao

{"title":"N/O dual coordination of cobalt single atom for fast kinetics sodium-sulfur batteries","authors":"Peng Hu, Yi-Fei Wu, Xin-Peng Gao, Long Huang, Bin-Bin Cai, Yu-Xian Liu, Yao Ma, Shan Jiang, Fei Wang, Feng-Ping Xiao","doi":"10.1007/s12598-024-02975-4","DOIUrl":"10.1007/s12598-024-02975-4","url":null,"abstract":"<div>Room-temperature sodium-sulfur batteries are promising grid-scale energy storage systems owing to their high energy density and low cost. However, their application is limited by the dissolution of long-chain sodium polysulfides and slow redox kinetics. To address these issues, a cobalt single-atom catalyst with N/O dual coordination was derived from a metal-organic framework precursor (denoted as Co–N2O2/MOFc) for sulfur storage. Theoretical analysis demonstrates that, compared with the Co–N4 structure, the introduction of oxygen atoms can further tune the d-electron density of Co atoms via the coordinative effect, which enhances d-p hybridization after Na2Sx adsorption on Co–N2O2/MOFc. This leads to higher adsorption energy for Na2Sx, lower Gibbs free energy for the rate-limiting process and a decreased Na2S decomposition energy barrier, thereby promoting the polysulfide conversion reaction kinetics. When used as a sulfur host, the Co–N2O2/MOFc/S cathode exhibits excellent performance with a capacity of 590 mAh·g−1 (983 mAh·g−1 normalized by the sulfur mass) after 100 cycles at 0.1 A·g−1 and an excellent rate capability of 350 mAh·g−1 at 10 A·g−1.<h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 1","pages":"288 - 299"},"PeriodicalIF":9.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tungsten-based Li-rich rock salt stabilized Co-free Ni-rich layered oxide cathodes 钨基富锂岩盐稳定无钴富镍层状氧化物阴极

IF 8.8 1区材料科学

Rare Metals Pub Date : 2024-08-31 DOI: 10.1007/s12598-024-02970-9

Bing-Chen Li, Mei Wang, Bing-Yuan Han, Yuan-Xia Zhang, Da-Jian Wang, Jing-Jing Chen, Zhi-Yong Mao, Chen-Long Dong

{"title":"Tungsten-based Li-rich rock salt stabilized Co-free Ni-rich layered oxide cathodes","authors":"Bing-Chen Li, Mei Wang, Bing-Yuan Han, Yuan-Xia Zhang, Da-Jian Wang, Jing-Jing Chen, Zhi-Yong Mao, Chen-Long Dong","doi":"10.1007/s12598-024-02970-9","DOIUrl":"https://doi.org/10.1007/s12598-024-02970-9","url":null,"abstract":"Dual-element-doped Co-free Ni-rich LiNiO2-based cathodes demonstrate great potential for high-energy lithium-ion batteries (LIBs). Nevertheless, they suffer from serious Li+/Ni2+ mixing, irreversible phase transitions, structural degradation and side reactions at the cathode/electrolyte interface. Herein, W is purposively introduced into LiNi0.9Mn0.05Ti0.025Al0.025O2 to engineer rock-salt Li4+xNi1-xWO6 stabilized LiNi0.9Mn0.035Ti0.025Al0.025W0.015O2 (LNMTAWO) cathode. In situ characterizations, together with electrochemical analysis, demonstrate that Mn, Ti and Al can effectively enhance the reversibility of phase transitions, stabilize the TM–O bonds under high voltage and relieve voltage decay. The rock-salt Li4+xNi1-xWO6 can prevent the overgrowth of grain size, avoid the exposure of active materials into electrolytes and decrease the side reaction. Benefitting from the dual-element synergistic effects, the LNMTAWO cathode offers high reversible capacities of 228.7 and 150.8 mAh·g−1 at 0.2C and 5C, respectively, and contributes a high reversible capacity of 171.4 mAh·g−1 at 0.5C after 200 cycles (voltage delay: 5 mV) and 88.4 mAh·g−1 at 10C after 500 cycles. Such design of rock-salt structure symbiotically grown on Ni-rich cathodes by introducing high-valence elements would provide rational guidelines on engineering high-energy Co-free Ni-rich LIB cathodes.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"270 1","pages":""},"PeriodicalIF":8.8,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0