Nanomaterials
·
2024
·Vol. 14
·期 10
·825
·
IF 4.4
Chongjie Su,Muhammad Hilal,Fan Yang,Xinda Xu,Chao Zhang,Shuoyu Guo,Junning Zhang,Zhicheng Cai,Huimin Yuan,Wanfeng Xie
Binary transition metal oxide complexes (BTMOCs) in three-dimensional (3D) layered structures show great promise as electrodes for supercapacitors (SCs) due to their diverse oxidation states, which contribute to high specific capacitance. However, the synthesis of BTMOCs with 3D structures remains challenging yet crucial for their application. In this study, we present a novel approach utilizing a single-step hydrothermal technique to fabricate flower-shaped microspheres composed of a NiCo-based complex. Each microsphere consists of nanosheets with a mesoporous structure, enhancing the specific surface area to 23.66 m2g−1and facilitating efficient redox reactions. When employed as the working electrode for supercapacitors, the composite exhibits remarkable specific capacitance, achieving 888.8 F g−1at 1 A g−1. Furthermore, it demonstrates notable electrochemical stability, retaining 52.08% capacitance after 10,000 cycles, and offers a high-power density of 225 W·kg−1, along with an energy density of 25 Wh·kg−1, showcasing its potential for energy storage applications. Additionally, an aqueous asymmetric supercapacitor (ASC) was assembled using NiCo microspheres-based complex and activated carbon (AC). Remarkably, the NiCo microspheres complex/AC configuration delivers a high specific capacitance of 250 F g−1at 1 A g−1, with a high energy density of 88 Wh kg−1, for a power density of 800 W kg−1. The ASC also exhibits excellent long-term cyclability with 69% retention over 10,000 charge–discharge cycles. Furthermore, a series of two ASC devices demonstrated the capability to power commercial blue LEDs for a duration of at least 40 s. The simplicity of the synthesis process and the exceptional performance exhibited by the developed electrode materials hold considerable promise for applications in energy storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Haoze Li,Hao Liu,Honggeng Ding,Chenshuo Fu,Ling Gao,Zhe Li,Haijing Liu,Yi Zhang,Abdul Jabbar Khan,Guowei Zhao
Li-containing argyrodites, particularly Li 5.5 PS 4.5 Cl 1.5 , are key ceramic solid electrolytes with high ionic conductivity (∼10 mS cm –1 at room temperature), making them promising candidates for all-solid-state lithium batteries (ASSBs). However, their poor air and electrochemical stability limit their application as electrolytes for ASSBs. This study attempts to address these issues by Ge 4+ substitution involving the forming of Li 5.5+ x (P 1− x Ge x )S 4.5 Cl 1.5 solid solutions (0 ≤ x ≤ 0.10). The optimized composition, Li 5.56 (P 0.9 Ge 0.1 )S 4.5 Cl 1.5 , exhibits improved air and electrochemical stability and a higher ionic conductivity of 13.2 mS cm –1 . When used in a lab-scale ASSB, this electrolyte achieved an initial discharge capacity of 106.4 mAh g –1 , retaining 89.3 mAh g –1 after 100 cycles with 98.9 % cycling efficiency. This work provides insights into the improving air and electrochemical stability of Li 5.5 PS 4.5 Cl 1.5 solid electrolytes for ASSBs.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Shenyang Xu,Zhihai Gao,Hao Chen,Liang Chang,Nian Zhang,Dong Zhou,Tianyi Li,Tony Wang,Cong Lin,Haoyu Xue,Qinghao Lai,Weiyuan Huang,Luyi Yang,Jiajie Liu,Tongchao Liu,Lunhua He,Mingjian Zhang,Zhengyan Lun,Feng Pan
Li-rich Mn-based layered (LMR) cathodes with anionic redox chemistry show great potential for next-generation sustainable Li-ion battery (LIB) applications due to the low cost and high energy density. However, the asynchronous structural evolutions with cycling in the heterogeneous composite structure of LMR lead to serious lattice strain and thus fast electrochemical decay, which hinders the commercialization of LMR cathodes. Here, an order–disorder coherent LMR cathode is demonstrated that exhibits a higher average voltage (by 0.25 V), negligible voltage decay (97.6% voltage retention after 100 cycles at 100 mA g −1 ), and enhanced cycling stability (98% capacity retention after 200 cycles at 100 mA g −1 ) compared to its layered oxide counterparts. It is proposed that this order–disorder coherent structure design can promote a more synchronous and homogeneous structure evolution during charge and discharge, thus minimizing lattice strain, which significantly prevents layer collapse and collective degradation at high voltage, improving the electrochemical stability. The study displays the feasibility of optimizing the performance of Li-rich cathode materials through a dedicated order–disorder structure control for sustainable energy storage.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Liming Zeng,Yongyang Zhu,Daifeng Wu,Dongxing Wang,Qing Zhou
The hydrogen evolution reaction (HER) in alkaline medium is much sluggish than that in acidic medium due to the limited water dissociation step, thus accelerating the water dissociation kinetics is critical. Herein, we designed a MoO x species-modified ruthenium nanoparticle catalyst (MoO x /Ru/C-3) based on the unique electrostatic interaction between carboxymethylcellulose sodium salt (CMC) and metal ions , where an heterophase structure is formed between MoO x and Ru. The obvious electronic interaction between them allows the formation of synergistic promotion relationship involving the water dissociation on MoO x and the adsorbed hydrogen recombination on Ru. At a metal loading of 6.98 μg Ru cm-2 geo, the overpotential of 82 mV is just required to reach a current density of 10 mA cm −2 , exhibiting a significantly better apparent electrochemical activity than Ru/C (98 mV) without introduction of MoO x , which demonstrates superior or comparable alkaline HER activity to the recently reported Ru-based electrocatalysts . Meanwhile, the overpotential for Ru/C increased by 113 mV after 24 h of chronopotentiometric test, whereas only 61 mV elevates for MoO x /Ru/C-3, and even just 98 mV generates after 120 h. Thereof, introduction of MoO x species into Ru matrix can also markedly improve the electrochemical stability. The proposed material construction strategy in this study provides a feasible idea for the rational design of highly cost-performance alkaline hydrogen evolution catalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Yiyun Cao,Lvji Yan,Bichao Wu,Dun Wei,Baixue Ouyang,Peng Chen,Tingzheng Zhang,Justice Annor Asare,Yuxin Jiang,Yingjie He,Haiying Wang
The capacitive deionization technology has demonstrated its efficacy in removing chlorine-containing contaminants from water. However, the long-term and selective removal of Cl − remains a significant challenge. We present the synthesis of nitrogen‑phosphorus co-doped carbon composites embedded with silver-metal particles by incorporating N and P heteroatoms, which serve as effective anchoring sites for metallic Ag. The design of the electrode material ultimately enhances the electrochemical stability of silver by facilitating strong interactions between nitrogen and phosphorus with the silver and carbon substrates, respectively, forming stable chemical bonds. The electrode material exhibited excellent dechlorination performance, with a selectivity factor (Cl − versus SO 4 2− ) of up to 83.4 for Cl − in wastewater in a mixed solution and an adsorption capacity of 99.2 mg·g −1 for Cl − . Additionally, the silver-based selective dechlorination electrode achieved a desalination capacity of 77.7 mg·g −1 for Cl − in a single system and demonstrated remarkable stability over 100 cycles, retaining 93.99 % of its capacity. The present study demonstrates that introducing nitrogen and phosphorus can significantly enhance the cyclic stability of silver‑carbon electrodes, thereby facilitating the sustainable treatment of chlorinated wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Qingyuan Dong,Bo Hong,Hailin Fan,Chunhui Gao,Shu Hong,Yanqing Lai
The Li metal anode has been regarded as the ultimate anode because of high theoretical capacity and low potential. Unfortunately, dendrite growth and safety issues impede its practical applications. Herein, we report a series of electron-rich functional groups, such as nitrogen, oxygen and phosphorus, doped Ketjen Black (ECP) as a lithium deposition/dissolution host. The electron-rich functional groups can effectively improve the wettability and lithiophility of the carbon host, which is benefit to induce homogeneous lithium deposition in the Ketjen Black (ECP), rendering significant inhibition of dendrite growth and effective improvement of electrochemical stability. Under the roles of these factors, the nitrogen doped Ketjen Black (ECP) electrode achieves a high Coulombic efficiency of 97.8% over 300 cycles at 1.0 mA cm −2 , while the pristine ECP electrode only maintains 110 cycles. What's more the O-doped ECP and P-ECP electrode also keeps longer cycles than the pristine ECP electrode.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Congcai Huang,Guanming Yang,Wenhao Yu,Chao Xue,Yanfang Zhai,Weiping Tang,Ning Hu,Zhaoyin Wen,Li Lu,Shufeng Song
As a possible solid electrolyte material for solid-state sodium-based batteries, gallium-substituted Na 3 Zr 2 Si 2 PO 12 in the structure of Nasicon (sodium super ion conductor) has received hardly any attention so far, though Ga 3+ has similar ionic radius close to that of Zr 4+ . Herein, a series of gallium-substituted Na 3 Zr 2 Si 2 PO 12 with formula of Na 3+x Zr 2-x Ga x Si 2 PO 12 (0 ≤ x ≤ 0.4) have been prepared through solid-state synthesis. The electrical, microstructural, and crystallographic performances of the developed solid electrolytes are systematically studied. In particular, the gallium-substituted Na 3.1 Zr 1.9 Ga 0.1 Si 2 PO 12 shows superior ionic conductivity of 1.06 × 10 −3 S cm −1 at 25 °C, which is almost one order of magnitude higher than that of the pristine Na 3 Zr 2 Si 2 PO 12 , as well as low electronic conductivity of 6.17 × 10 −8 S cm −1 and wide electrochemical stability window of 5 V vs. Na/Na + . This work demonstrates a new substituted strategy for exploring Na + -ion solid electrolytes.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 8
·4072-4077
·
IF 2.936
Chuan Shi,Jianwei Zhu,Xiu Shen,Fuxing Chen,Fanggang Ning,Hongdi Zhang,Yun-Ze Long,Xin Ning,Jinbao Zhao
A flexible SiO2 porous fiber membrane (SF) is prepared by electrospinning followed by calcination in this work. Compared with an organic substrate separator, the SF used as a separator will be an absolute guarantee of the battery thermal safety. The porosity of the SF is 88.6%, which is more than twice that of a regular PP separator. Hydrophilic SF shows better electrolyte wetting ability and its high porosity enables the SF to absorb 633% liquid electrolyte on average, while the lithium-ion conductivity reaches 1.53 mS cm−1. The linear sweep voltammogram testing of PP and SF suggested that SF, with great electrochemical stability, can meet the requirements of lithium-ion batteries. The cyclic and rate performances of batteries prepared with SF are improved significantly. Such advantages of the SF, together with its potential in mass production, make the SF a promising membrane for practical applications in secondary lithium-ion batteries.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
Science China-Materials
·
2021
·Vol. 65
·期 1
·95-104
·
IF 8.273
Bao Kepan,Pang Yuepeng,Yang Junhe,Sun Dalin,Fang Fang,Zheng Shiyou
Rational composite design is highly important for the development of high-performance composite polymer electrolytes (CPEs) for solid-state lithium (Li) metal batteries. In this work, Li closo-borohydride, Li 2 B 12 H 12 , is introduced to poly(vinylidene fluoride)-Li-bis-(trifluoromethanesulfonyl) imide (PVDF-LiTFSI) with a bound N -methyl pyrrolidone plasticizer to form a novel CPE. This CPE shows superb Li + conduction properties, as evidenced by its conductivity of 1.43 × 10 −4 S cm −1 and Li + transference number of 0.34 at 25°C. Density functional theory calculations reveal that Li 2 B 12 H 12 , which features electron-deficient multicenter bonds, can facilitate the dissociation of LiTFSI and enhance the immobilization of TFSI to improve the Li + conduction properties of the CPE. Moreover, the fabricated CPE exhibits excellent electrochemical, thermal, and mechanical stability. The addition of Li 2 B 12 H 12 can help form a protective layer at the anode/electrolyte interface, thereby preventing unwanted reactions. The above benefits of the fabricated CPE contribute to the high compatibility of the electrode. Symmetric Li cells can be stably cycled at 0.2 mA cm −2 for over 1200 h, and Li∥LiFePO 4 cells can deliver a reversible specific capacity of 140 mA h g −1 after 200 cycles at 1 C at 25°C with a capacity retention of 98%.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 9
·2404
·
IF 5.076
Liren Zheng,Minrui Wang,Yujie Li,Fahao Ma,Jiyu Li,Weiyi Jiang,Mu Liu,Hefeng Cheng,Zeyan Wang,Zhaoke Zheng,Peng Wang,Yuanyuan Liu,Ying Dai,Baibiao Huang
Monoclinic bismuth vanadate (BiVO4) is an attractive material with which to fabricate photoanodes due to its suitable band structure and excellent photoelectrochemical (PEC) performance. However, the poor PEC stability originating from its severe photo-corrosion greatly restricts its practical applications. In this paper, pristine and Mo doped BiVO4ceramics were prepared using the spark plasma sintering (SPS) method, and their photoelectrochemical properties as photoanodes were investigated. The as-prepared 1% Mo doped BiVO4ceramic (Mo-BVO (C)) photoanode exhibited enhanced PEC stability compared to 1% Mo doped BiVO4films on fluorine doped Tin Oxide (FTO) coated glass substrates (Mo-BVO). Mo-BVO (C) exhibited a photocurrent density of 0.54 mA/cm2and remained stable for 10 h at 1.23 V vs. reversible hydrogen electrode (RHE), while the photocurrent density of the Mo-BVO decreased from 0.66 mA/cm2to 0.11 mA/cm2at 1.23 V vs. RHE in 4 h. The experimental results indicated that the enhanced PEC stability of the Mo-BVO (C) could be attributed to its higher crystallinity, which could effectively inhibit the dissociation of vanadium in BiVO4during the PEC process. This work may illustrate a novel ceramic design for the improvement of the stability of BiVO4photoanodes, and might provide a general strategy for the improvement of the PEC stability of metal oxide photoanodes.Keywords:BiVO4photoanode;photoelectrochemical stability;spark plasma sintering (SPS);ceramics
研究领域:
材料科学
·
光电化学
·
陶瓷工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Nanjie Chen,Dongchu Chen,Jingshu Wu,Yuekun Lai,Dongyang Chen
Redox flow batteries (RFBs) are highly promising electrochemical systems for large-scale energy storage. To develop high energy density non-aqueous catholyte for RFBs, herein, two polar and bulky polyethylene glycol tails have been attached to the tetrathiafulvalene (TTF) core by ester exchange reactions. Such modification turns scarcely soluble TTF particles into viscous oils, which are totally miscible with the conventional organic electrolytes. The 4,4′(5′)-bis(2-(2-methoxyethoxy)ethyl)carboxylate -tetrathiafulvalene (TTF-BMEEC) with a mass-based specific capacity of 107.84 mAh g −1 is systematically evaluated in a hybrid RFB. When paired with a Li foil electrode and a permselective separator, the catholyte consisting of 1.0 M of TTF-BMEEC delivers two high discharge voltage plateaus of 3.55 and 3.88 V, a large volumetric capacity of 49.6 Ah L −1 , an outstanding energy density of 178.0 Wh L −1 , and a high cycling capacity retention of 91.5% after 100 cycles at the current density of 10 mA cm −2 . The excellent electrochemical stability of TTF-BMEEC is confirmed by UV–vis and 1 H NMR investigations and supported by density functional theory (DFT) calculations. These results demonstrate that molecular engineering has great potential for the development of high performance organic redox-active materials for RFBs.
研究领域:
材料科学
·
电化学
·
储能技术
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 23
·4155
·
IF 4.329
Lijuan Chen,Xisen Cai,Zhonghui Sun,Baohua Zhang,Yu Bao,Zhenbang Liu,Dongxue Han,Li Niu
Thermally reversible self-healing polymer (SHP) electrolyte membranes are obtained by Diels-Alder cycloaddition and electrolyte embedding. The SHP electrolytes membranes are found to display high ionic conductivity, suitable flexibility, remarkable mechanical properties and self-healing ability. The decomposition potential of the SHP electrolyte membrane is about 4.8 V (vs. Li/Li+) and it possesses excellent electrochemical stability, better than that of the commercial PE film which is only stable up to 4.5 V (vs. Li/Li+). TGA results show that the SHP electrolyte membrane is thermally stable up to 280 °C in a nitrogen atmosphere. When the SHP electrolyte membrane is used as a separator in a lithium-ion battery with an LCO-based cathode, the SHP membrane achieved excellent rate capability and stable cycling for over 100 cycles, and the specific discharge capacity could be almost fully recovered after self-healing. Furthermore, the electrolyte membrane exhibits excellent electrochemical performance, suggesting its potential for application in lithium-ion batteries as separator material.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）