CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Shiyu Liu,Guodong Han,Jian Zhang,Hao Wang,Xiaoxi Huang
Electrochemical water splitting to produce clean hydrogen fuel provides a route to store electrical energy based on intermittent renewable energy sources. Oxygen evolution reaction (OER) is an essential reaction in water splitting process and requires efficient electrocatalyst to lower the overpotential. However, current electrocatalysts are limited by the complicated synthetic protocols, especially long synthesis time, along with poor intrinsic catalytic activity. Here we report a low-cost and scalable electrochemical method to synthesize efficient water oxidation electrode via potential pulses. In a two-electrode setup, two water oxidation electrodes are synthesized in merely 10 s. These two electrodes need overpotentials of 240.7 ± 6.8 mV and 239.5 ± 3.4 mV to catalyze OER at 10 mA/cm 2 current density normalized by geometric area. Remarkably, when normalized by electrochemically active surface area, the intrinsic catalytic activity outperformed the state-of-the-art catalysts. And the electrode is durable to catalyze OER at 100 mA/cm 2 , even after repeated ultrasonication treatment, the overpotential only shift 25–51 mV. We postulate that the highly disordered defective sites of nickel hydroxide modified with iron species are the most active OER catalytic sites. In addition, the attempt to synthesize 10 water oxidation electrodes using this concept is very successful, further reducing the cycle time to 1 s per electrode. The super facile synthesis procedures, as well as the excellent catalytic performance make these materials highly suitable for large scale applications.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
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2023
·Vol. 15
·期 1
·1-16
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IF 26.6
Li Xiangyang,Chen Fangshuai,Zhao Bo,Zhang Shaohua,Zheng Xiaoyu,Wang Ying,Jin Xuting,Dai Chunlong,Wang Jiaqi,Xie Jing,Zhang Zhipan,Zhao Yang
An efficient and general strategy for ultrafast synthesis of seven transition metal layered hydroxides on conductive substrates is proposed, which avoids the use of additional reagents, multiple steps and long production time in the traditional bottom-up method.
The whole synthesis process only takes as fast as approximately 13 s, and its synthesis rate reaches ~ 0.46 cm 2 s −1 .
The NiCo LDH@CC as a demonstration example is selected as cathode material for aqueous alkaline Zn (micro-) battery, which exhibits an outstanding performance.
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
ADVANCED MATERIALS
·
2022
·Vol. 35
·期 2
·2208974
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IF 32.086
Wei Zhu,Jingchao Zhang,Jiawei Luo,Cuihua Zeng,Hai Su,Jinfeng Zhang,Rui Liu,Enyuan Hu,Yuansheng Liu,Wei-Di Liu,Yanan Chen,Wenbin Hu,Yunhua Xu
The synthesis of cathode materials plays an important role in determining the production efficiency, cost, and performance of lithium-ion batteries. However, conventional synthesis methods always experience a slow heating rate and involve a complicated multistep reaction process and sluggish reaction dynamics, leading to high energy and long time consumption. Herein, a high-temperature shock (HTS) strategy is reported for the ultrafast synthesis of cathode materials in seconds. The HTS process experiences an ultrahigh heating rate, leading to a non-equilibrium reaction and fast reaction kinetics, and avoids high energy and long time consumption. Mainstream cathode materials (such as LiMn 2 O 4 , LiCoO 2 , LiFePO 4 , and Li-rich layered oxide/NiO heterostructured material) are successfully synthesized with pure phases, oxygen vacancies, ultrasmall particle sizes, and good electrochemical performance. The HTS process not only provides an efficient synthesis approach for cathode materials, but also can be extended beyond lithium-ion batteries.
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
DOI
高影响因子
Advanced Energy Materials
·
2023
·Vol. 13
·期 37
·2301540
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IF 27.8
Daxian Zuo,Lin Yang,Zheyi Zou,Shen Li,Yitian Feng,Stephen J. Harris,Siqi Shi,Jiayu Wan
NASICON-structured solid-state electrolytes (SSEs) are highly promising materials for sodium solid-state metal batteries (NaSMBs). However, the current synthesis methods are often labor-intensive and inefficient, consuming a significant amount of energy and time. Here, an ultrafast high-temperature synthesis (UHS) technique is successfully demonstrated to directly synthesize NASICON-type SSEs from mixed precursor powders, reducing the synthesis time from hours to merely seconds. The intermediate with a Na 3 PO 4 structure plays a critical role in the rapid synthesis of NASICON-type SSEs, ultimately leading to the formation of the final NASICON phase. Moreover, the UHS-synthesizes NASICON-type Na 3.3 Zr 1.7 Lu 0.3 Si 2 PO 12 (NZLSP) exhibits high room temperature ionic conductivity of 7.7 × 10 −4 S cm −1 , approximately three times that of the undoped Na 3 Zr 2 Si 2 PO 12 (NZSP). The Na|NZLSP|Na symmetric cell can sustain highly stable cycling for over 4800 h. This study provides a novel insight and validation in the precise and targeted synthesis of complex oxide solid-state electrolytes.
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
Nature Communications
·
2023
·Vol. 14
·期 1
·1-12
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IF 16.6
Zhang Lin,Peng Li,Lu Yuanchao,Ming Xin,Sun Yuxin,Xu Xiaoyi,Xia Yuxing,Pang Kai,Fang Wenzhang,Huang Ning,Xu Zhen,Ying Yibin,Liu Yingjun,Fu Yingchun,Gao Chao
Wet-chemical synthesis via heating bulk solution is powerful to obtain nanomaterials. However, it still suffers from limited reaction rate, controllability, and massive consumption of energy/reactants, particularly for the synthesis on specific substrates. Herein, we present an innovative wet-interfacial Joule heating (WIJH) approach to synthesize various nanomaterials in a sub-second ultrafast, programmable, and energy/reactant-saving manner. In the WIJH, Joule heat generated by the graphene film (GF) is confined at the substrate-solution interface. Accompanied by instantaneous evaporation of the solvent, the temperature is steeply improved and the precursors are concentrated, thereby synergistically accelerating and controlling the nucleation and growth of nanomaterials on the substrate. WIJH leads to a record high crystallization rate of HKUST-1 (~1.97 μm s −1 ), an ultralow energy cost (9.55 × 10 −6 kWh cm −2 ) and low precursor concentrations, which are up to 5 orders of magnitude faster, −6 and −2 orders of magnitude lower than traditional methods, respectively. Moreover, WIJH could handily customize the products’ amount, size, and morphology via programming the electrified procedures. The as-prepared HKUST-1/GF enables the Joule-heating-controllable and low-energy-required capture and liberation towards CO 2 . This study opens up a new methodology towards the superefficient synthesis of nanomaterials and solvent-involved Joule heating.
研究领域:
材料科学
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化学工程
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
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IF 4.7
Zhili Xu,Shuanglai Liu,Wenwu You,Mingxing Li,Jiacai Li,Pingping Fan,Xu Zhao,Gencai Pan,Huiping Gao,Yanli Mao
Organic–inorganic hybrid metal halides have attracted considerable attention due to their facile synthesis, low cost, and high thermal and chemical stability. However, developing environmentally benign, readily synthesized, high-performance, and spectrally tunable broadband-emitting materials remains challenging. Herein, this study reports a zero-dimensional perovskite material, TEA2HfCl6:Sb3+, using a room-temperature coprecipitation method. This material exhibits low toxicity and excitation-wavelength-dependent modulation of singlet and triplet emission ratios, enabling broadband emission ranging from warm white to deep red. Notably, TEA2HfCl6:11%Sb3+ achieves a high photoluminescence quantum yield of up to 93.1%. Steady-state and time-resolved spectroscopic analyses reveal that these emissions arise from Sb3+-induced radiative transitions of singlet and triplet self-trapped excitons. Furthermore, leveraging its scalable synthesis process and favorable emission characteristics, the material shows potential for applications in large-area optical anticounterfeiting paper and full-spectrum, eye-friendly white-light-emitting diode (WLED). These findings highlight the dual functionality of TEA2HfCl6:Sb3+ in secure optical encryption and solid-state lighting, providing a promising platform for the development of multifunctional luminescent materials.
研究领域:
材料科学
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光电子学
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发光材料
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固态照明
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安全与加密
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无机化学
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纳米材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）