Nano Energy最新文献_第8页

Electrochemically passivated Ni3 + /Ni4+ for super stabilized ultrahigh-nickel cathodes 超稳定超高镍阴极的电化学钝化Ni3 + /Ni4+

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-14 DOI: 10.1016/j.nanoen.2026.111724

Xinyu Zhang , Yuming Liu , Luoming Zhang , Haoji Wang , Xinyu Hu , Ningyun Hong , Jiangnan Huang , Xiaoyu Cao , Limin Zhu , Leiming Lang , Wentao Deng , Guoqiang Zou , Hongshuai Hou , Jinhui Cao , Xiaobo Ji

Ultrahigh-nickel layered cathode materials (LiNi_0.9Co_0.05Mn_0.05O₂) are anticipated to achieve commercialization with promised energy density. However, the durability of the structure is seriously reduced by surface parasitic reactions and anisotropic stress accumulation. To alleviate the problems above, we aim to isolate the highly oxidized Ni³⁺/Ni⁴⁺ and O^- on the surface from the electrolyte and fixing the position of oxygen through a synergistic oxygen immobilization and surface passivation strategy. Highly activity Ni³⁺/Ni⁴⁺ is effectively passivated as a result of an ionic-conduction LiInO₂ coating layer, leading to mitigation of parasitic decomposition reactions, as proved by ex-situ XAS and TOF-SIMS analysis. Moreover, surficial lattice integrality is significantly improved on account of strongly ionic In-O incorporation, contributing to elevated lattice endurance accompanied with outstanding cycle stability, confirmed by in-situ XRD patterns. Leveraging the effects of elemental doping and surface engineering, the designed 1 % In-NCM cathode exhibits an impressive capacity retention of 93.9 % after 120 cycles at 1 C (1 C = 200 mA g⁻¹), far exceeding the 75.9 % retention of pristine NCM (LiNi_0.9Co_0.05Mn_0.05O₂), demonstrating remarkable long-term cycling stability. These findings provide novel insights for accelerating the application of ultrahigh-nickel layered cathode materials.

超高镍层状正极材料（LiNi0.9Co0.05Mn0.05O2）的能量密度有望实现商业化。然而，表面寄生反应和各向异性应力积累严重降低了结构的耐久性。为了缓解上述问题，我们的目标是通过协同氧固定化和表面钝化策略，从电解液中分离出表面高度氧化的Ni3+/Ni4+和O-，并固定氧的位置。高活性的Ni3+/Ni4+由于离子传导的LiInO2涂层而被有效钝化，导致寄生分解反应的减缓，正如原位XAS和TOF-SIMS分析所证明的那样。此外，原位XRD图证实，由于强离子In-O的掺入，表面晶格的完整性得到了显著改善，从而提高了晶格的耐久性，并具有出色的循环稳定性。利用元素掺杂和表面工程的影响，设计的1 % In-NCM阴极在1 C（1 C = 200 mA g−1）下120次循环后的容量保留率为93.9 %，远远超过原始NCM （LiNi0.9Co0.05Mn0.05O2）的75.9% %，表现出显著的长期循环稳定性。这些发现为加速超高镍层状正极材料的应用提供了新的见解。

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引用次数: 0

An energy-dense polysulfide/ferricyanide redox flow battery enabled by cation engineering 一种能量密集的聚硫/铁氰化物氧化还原液流电池

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-14 DOI: 10.1016/j.nanoen.2026.111722

Mahla Sarfaraz Khabbaz , Diqing Yue , Lily Shukla , Anupma Thakur , Sepideh Biabanialitappeh , Jian Xie , J. David Bazak , Xiaoliang Wei

Polysulfide/ferricyanide (S/Fe) redox flow battery is an attractive cost-effective grid energy storage system but is limited by low energy density and irreversible performance fading. Here we demonstrate cation engineering as an effective approach to enhance the energy density. The use of Li⁺ cation greatly improves the solubilities of redox anions through strengthening the water solvating interactions. Compared to Nafion membranes, a selected commercial cation exchange membrane exhibits an exceptional ability to mitigate the crossover of redox anions and thus substantially extends the cycle life of S/Fe flow cells. By using the attenuated total reflectance mode to minimize spectral interference, we successfully establish the feasibility of exploiting the Fourier transform infrared technique to determine the state of charge of S/Fe flow cells. The strategies of cation engineering and permselective membrane offers an encouraging opportunity to advance the S/Fe flow battery with boosted charge storage and durability.

多硫化物/铁氰化物（S/Fe）氧化还原液流电池是一种极具吸引力的经济高效的电网储能系统，但其能量密度低、性能不可逆衰退等问题限制了其发展。本文论证了阳离子工程是提高能量密度的有效途径。Li+阳离子的使用通过加强水溶剂化作用，大大提高了氧化还原阴离子的溶解度。与Nafion膜相比，选定的商用阳离子交换膜具有减轻氧化还原阴离子交叉的特殊能力，从而大大延长了S/Fe流电池的循环寿命。通过采用衰减全反射模式来减少光谱干扰，我们成功地建立了利用傅里叶变换红外技术来确定S/Fe流电池电荷状态的可行性。阳离子工程和透选膜的策略为推进S/Fe液流电池提供了一个令人鼓舞的机会，提高了电荷存储和耐用性。

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引用次数: 0

The path of the separator: Through production, categorization, in-service performance, and sustainable recycling in LIBs 分离器的路径：通过lib的生产，分类，使用性能和可持续回收

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-14 DOI: 10.1016/j.nanoen.2026.111718

Pengfei Zhang , Jiahao Yuan , Mengxing Zhang , Xiuyun Chuan , Fangfang Liu , Jinan Niu , Peizhong Feng

As a critical internal component of lithium-ion batteries (LIBs), the separator plays a dual role: it physically isolates the positive and negative electrodes while simultaneously facilitating the transport of lithium ions (Li⁺). Its performance determines the battery's cycle life, rate capability, and safety. This review presents a holistic, life-cycle-oriented examination of LIB separators, establishing a closed-loop framework linking “Fabrication-Structure-Failure-Recycling”. We first critically evaluate mainstream and emerging fabrication techniques, elucidating how processing parameters determine key microstructural features such as pore tortuosity, anisotropy, and surface chemistry. Subsequently, we bridge the gap between static structures and dynamic failure mechanisms. By integrating multiscale theoretical simulations, we elucidate how fabrication-induced defects predetermine specific failure pathways-ranging from dendrite penetration and thermal shrinkage to electrolyte degradation. Furthermore, responding to the urgent demand for a circular economy, we provide a comprehensive analysis of sustainable upcycling strategies, contrasting the thermodynamic feasibility and environmental footprint of physical, chemical, and pyrolytic recycling routes. Finally, we outline critical bottlenecks and future opportunities for next-generation separator design, including multifunctional architectures, recyclability, and predictive modeling frameworks tailored for emerging battery chemistries. This review aims to provide a failure-informed and multiscale design paradigm for separators, accelerating the rational development of safer and higher-performance energy storage systems.

作为锂离子电池（LIBs）的关键内部部件，隔膜起着双重作用：物理隔离正负极，同时促进锂离子（Li+）的运输。它的性能决定了电池的循环寿命、倍率能力和安全性。本文综述了LIB分离器的整体、面向生命周期的研究，建立了一个连接“制造-结构-失效-回收”的闭环框架。我们首先批判性地评估了主流和新兴的制造技术，阐明了加工参数如何决定关键的微观结构特征，如孔隙弯曲度、各向异性和表面化学。随后，我们弥合了静态结构和动态破坏机制之间的差距。通过集成多尺度理论模拟，我们阐明了制造引起的缺陷如何预先确定特定的失效途径-从枝晶渗透和热收缩到电解质降解。此外，为了响应循环经济的迫切需求，我们对可持续升级回收策略进行了全面分析，对比了物理、化学和热解回收路线的热力学可行性和环境足迹。最后，我们概述了下一代隔膜设计的关键瓶颈和未来机遇，包括多功能架构、可回收性和为新兴电池化学定制的预测建模框架。本综述旨在为分离器提供故障信息和多尺度设计范式，加速更安全和高性能储能系统的合理开发。

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引用次数: 0

Intravesical pressure-driven piezoelectric nanoneedles with optimized morphology for enhanced bladder cancer therapy via tunneling nanotubes-mediated intercellular delivery 膀胱内压力驱动的压电纳米针通过纳米管隧道介导的细胞间传递增强膀胱癌治疗

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.nanoen.2026.111716

Zhijun Liu , Ravindra Joshi , Zhongguo Zhou , Zong-Hong Lin , Shaohua Zhang , Song Wu

Bladder cancer poses a critical global health burden with high mortality and recurrence rates, where intravesical chemotherapy remains limited by poor drug penetration and rapid clearance. To overcome these challenges, we developed a needle-like piezoelectric nanosystem that consists of morphology-optimized lanthanum-doped barium titanate (BTO-CPT_PEG) with enhanced cellular internalization and tumor tissue permeability. Under rhythmic intravesical pressure fluctuations, it is effectively converted into a mechanical force output as an alternative to ultrasound, concurrently generating reactive oxygen species (ROS) via piezoelectric catalysis and enabling controlled release of camptothecin (CPT). Furthermore, we discovered that the piezoelectric nanoneedle activates tunneling nanotubes (TNTs) formation among cancer cells, facilitating intercellular nanodrug transport and promoting a potent bystander killing effect in poorly accessible tumor regions. This work presents a self-driven and intelligent therapeutic nanoplatform that effectively leverages organ-specific biomechanical forces for precision nanomedicine, offering a promising strategy against bladder cancer.

膀胱癌是一个严重的全球健康负担，死亡率和复发率高，膀胱内化疗仍然受到药物渗透不良和快速清除的限制。为了克服这些挑战，我们开发了一种针状压电纳米系统，该系统由形貌优化的镧掺杂钛酸钡（BTO-CPTPEG）组成，具有增强的细胞内化和肿瘤组织渗透性。在有节奏的膀胱内压力波动下，它有效地转化为机械力输出，作为超声的替代品，同时通过压电催化产生活性氧（ROS），并使喜树碱（CPT）可控释放。此外，我们发现压电纳米针激活癌细胞中隧道纳米管（TNTs）的形成，促进细胞间纳米药物的运输，并在难以进入的肿瘤区域促进有效的旁观者杀伤效应。这项工作提出了一个自我驱动的智能治疗纳米平台，有效地利用器官特异性生物力学力进行精密纳米医学，为治疗膀胱癌提供了一个有希望的策略。

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引用次数: 0

In-sensor polychromatic visual information processing enabled by all-optical controlled neuromorphic devices 全光控制神经形态装置实现传感器内多色视觉信息处理

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-12 DOI: 10.1016/j.nanoen.2026.111715

Dunan Hu , Ruqi Yang , Honglie Lin , Qiujiang Chen , Lu Chen , Yang Tian , Kequan Xia , Jianguo Lu

Traditional vision systems relying on CMOS image sensors typically demand substantial computational resources and network transmission. Particularly when processing color images, they suffer from issues such as system latency and high power consumption. To address these challenges, biomimetic neuromorphic vision sensors integrating sensing, memory, and computation have garnered widespread attention. Herein, we report for the first time a multispectral all-optical controlled neuromorphic device based on an amorphous ZnO/Nb₂O₅ heterojunction, an in-sensor computing unit that integrates sensing and artificial synaptic functionalities into a single device. This device shows programmable, optically-induced reversible conductance, simulating excitatory and inhibitory postsynaptic currents at 620 nm and 460 nm, respectively. Importantly, it demonstrates wide-spectrum response (365–660 nm) and multispectral selectivity. The multispectral synaptic weight matrix enables accurate in-sensor multicolor visual recognition and classification tasks, encompassing mixed-color digits, flower images, and traffic lights. This work realizes the integration of sensing, memory, all-optical controlled write/erase, multispectral perception, and computation into one device, offering a promising material strategy for low-power, wide-spectrum, and intelligent neuromorphic visual systems.

基于CMOS图像传感器的传统视觉系统通常需要大量的计算资源和网络传输。特别是在处理彩色图像时，它们受到系统延迟和高功耗等问题的困扰。为了解决这些挑战，集成传感、记忆和计算的仿生神经形态视觉传感器已经引起了广泛的关注。在此，我们首次报道了基于无定形ZnO/Nb2O5异质结的多光谱全光控神经形态器件，这是一种将传感和人工突触功能集成到单个器件中的传感器内计算单元。该器件显示出可编程的、光诱导的可逆电导，分别模拟620nm和460nm的兴奋性和抑制性突触后电流。重要的是，它具有宽光谱响应（365 nm-660 nm）和多光谱选择性。多光谱突触权重矩阵能够实现精确的传感器内多色视觉识别和分类任务，包括混合色数字、花图像和交通灯。这项工作实现了传感、记忆、全光控制写/擦除、多光谱感知和计算集成到一个器件中，为低功耗、宽光谱和智能神经形态视觉系统提供了一种有前途的材料策略。

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引用次数: 0

Beyond charge separation: Unraveling the synergy of piezoelectric polarization and structure engineering in carbon nitride for thermodynamically boosted H2O2 production 超越电荷分离：揭示压电极化和结构工程在氮化碳中对热力学促进H2O2生产的协同作用

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-10 DOI: 10.1016/j.nanoen.2026.111711

Xiaolei Zhang , Yue An , Wenying Yu , Yingge Zhang , Na Tian , Jun Li , Hongwei Huang

The prevailing paradigm in piezo-photocatalysis primarily focuses on leveraging piezoelectric polarization fields to enhance the separation of photogenerated charges. Herein, we transcend this conventional approach by demonstrating that piezoelectric polarization can synergize with precisely engineered molecular structures to regulate both the reaction kinetics and thermodynamics for hydrogen peroxide (H₂O₂) production by using the cyano-functionalized and K⁺ -intercalated carbon nitride (MCN) with enhanced intrinsic dipole moment and piezoelectric response as model catalyst. Combined experimental characterizations and DFT calculations unveil that the piezoelectric field not only facilitates charge separation but, more importantly, cooperates with the electron-withdrawing cyano groups to boost O₂ adsorption, elongate the OO bond, and lower the energy barrier of the rate-determining step. Consequently, MCN achieves an exceptional piezo-photocatalytic H₂O₂ production rate of 8.03 mmol/g/h. Furthermore, the as-formed flexible MCN/PVDF-HFP film demonstrates practical potential under outdoor sunlight with mechanical agitation, enabling efficient H₂O₂ accumulation, which is successfully utilized for the rapid degradation of organic pollutants. This work introduces a novel concept of synergistic polarization and molecular engineering, paving the way for advanced catalyst design in sustainable chemical synthesis.

压电-光催化的主流范式主要集中在利用压电极化场来增强光生电荷的分离。在此，我们超越了这种传统的方法，证明压电极化可以与精确工程的分子结构协同作用，调节过氧化氢（H2O2）生产的反应动力学和热力学，使用氰化功能化和K+插层氮化碳（MCN）作为模型催化剂，具有增强的固有偶极矩和压电响应。结合实验表征和DFT计算揭示，压电场不仅有利于电荷分离，更重要的是，与吸电子的氰基协同促进O2吸附，延长OO键，降低速率决定步骤的能垒。因此，MCN实现了特殊的压电光催化H2O2产率8.03 mmol/g/h。此外，形成的柔性MCN/PVDF-HFP薄膜在室外阳光下机械搅拌下具有实用潜力，能够有效地积累H2O2，成功地用于有机污染物的快速降解。本工作引入了协同极化和分子工程的新概念，为可持续化学合成的先进催化剂设计铺平了道路。

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引用次数: 0

Electrochemical-mechanical regulation of lithium deposition morphology in lithium metal batteries 锂金属电池中锂沉积形态的电化学-力学调控

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-10 DOI: 10.1016/j.nanoen.2026.111713

Xuzhi Zhang, Yunan Liu, Libo Men, Rong Xu

Lithium (Li) metal batteries offer exceptionally high energy density but their practical application is severely constrained by dendritic growth at the Li metal anode. Applying stack pressure has emerged as an effective strategy to mitigate dendrite formation; however, the underlying mechanisms governing the coupling between electrochemical deposition and mechanically induced deformation remain insufficiently understood, leaving optimal pressure conditions across different electrolytes largely determined by trial and error. Here, we develop an electro-chemo-mechanical model, supported by experimental validations, to elucidate how electrolyte properties and stack pressure jointly regulate Li deposition morphology. We show that dendrite-favorable electrolytes (e.g., low Li⁺ diffusivity) promote irregular Li nucleation and growth, which concentrate local stresses under pressure and thereby undergo marked morphology improvement through pressure-induced creep. By contrast, electrolytes with inherently uniform deposition exhibit limited sensitivity to stack pressure. These findings establish a mechanistic framework for the competitive regulation of Li morphology by electrolyte chemistry and stack pressure, offering design principles for uniform Li plating in high-performance Li metal batteries.

锂金属电池具有极高的能量密度，但其实际应用受到锂金属阳极枝晶生长的严重限制。施加堆压已成为缓解枝晶形成的有效策略；然而，控制电化学沉积和机械诱导变形之间耦合的潜在机制仍然没有得到充分的了解，使得不同电解质的最佳压力条件在很大程度上取决于试验和错误。在这里，我们建立了一个电化学-力学模型，并通过实验验证来阐明电解质性质和堆叠压力如何共同调节锂沉积形态。我们发现有利于枝晶的电解质（例如，低Li+扩散率）促进不规则的Li形核和生长，在压力下集中局部应力，从而通过压力诱导蠕变显著改善形貌。相比之下，具有固有均匀沉积的电解质对堆压的敏感性有限。这些发现为电解质化学和堆压对锂形态的竞争性调节建立了机制框架，为高性能锂金属电池中均匀镀锂提供了设计原则。

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引用次数: 0

Breaking the cost-performance trade-off in electrocaloric cooling via high-entropy engineered multilayer ceramics 利用高熵工程多层陶瓷打破电热冷却的成本-性能权衡

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-09 DOI: 10.1016/j.nanoen.2026.111709

Hao Wang , Ziyue Ma , Le Zhang , Qi Zhang , Guangzhi Dong , Zhonglin Wang , Biaolin Peng

Pb(Sc0.5Ta0.5)O₃ (PST) has been regarded as a leading candidate for device-grade solid-state cooling due to the exhibition of strong electrocaloric (EC) response. However, its high sintering temperature impedes the fabrication of low-cost multilayer ceramic capacitor (MLCC) device, which has been viewed as one of most potential cooling protocols. To overcome this limitation, we propose a material-to-device co-optimization strategy for the PST system that integrate high-entropy B-site chemistry with a low-temperature MLCC architecture. An equimolar incorporation of Sc, Ta, In, Nb, and Zr into the PST matrix produced the special B-site high-entropy perovskite Pb(Sc_0.2Ta_0.2In_0.2Nb_0.2Zr_0.2)O₃ (PSTINZ). This composition enabled co-firing with Ag/Pd (0.4/0.6) internal electrodes at 950°C, requiring only a brief post-anneal at 650°C for 2.5 h. The reduced firing temperature, shortened annealing duration, and decreased use of noble metals collectively lower the overall manufacturing cost by ∼65 %. More importantly, the fabricated PSTINZ-MLCC exhibits a large adiabatic temperature change ΔT_ad = 8.02 K and a considerable COP of 6.5 at 40°C under 400 kV·cm⁻¹ (direct method) while maintaining this cost-effectiveness. Direct and indirect measurements are mutually consistent and further indicate an effective operating window of ∼35 K around room temperature. Combining these performance and cost advantages, this quinary high-entropy MLCC provides a compelling platform for next-generation electrocaloric solid-state cooling.

由于Pb(Sc0.5Ta0.5)O3 （PST）表现出强烈的电热（EC）响应，因此被认为是器件级固态冷却的主要候选材料。然而，它的高烧结温度阻碍了低成本多层陶瓷电容器（MLCC）器件的制造，这已被视为最有潜力的冷却方案之一。为了克服这一限制，我们提出了一种材料到器件的PST系统协同优化策略，该策略将高熵b位化学与低温MLCC架构相结合。Sc、Ta、In、Nb和Zr等摩尔掺入到PST基体中，生成特殊的b位高熵钙钛矿Pb(Sc0.2Ta0.2In0.2Nb0.2Zr0.2)O3 （PSTINZ）。这种成分可以在950°C下与Ag/Pd（0.4/0.6）内部电极共烧，只需要在650°C下进行2.5小时的短暂退火。降低了烧成温度，缩短了退火时间，减少了贵金属的使用，使总体制造成本降低了约65%。更重要的是，制备的PSTINZ-MLCC在保持成本效益的同时，在400 kV·cm（直接法）下，在40°C下表现出巨大的绝热温度变化ΔTad = 8.02 K和可观的COP为6.5。直接和间接测量结果相互一致，并进一步表明室温左右~ 35k的有效工作窗口。结合这些性能和成本优势，这种五倍高熵MLCC为下一代电固态冷却提供了一个引人注目的平台。

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引用次数: 0

Electric field-driven oscillatory liquid metal for highly efficient thermal management 高效热管理的电场驱动振荡液态金属

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-09 DOI: 10.1016/j.nanoen.2026.111706

Gihyeon Jeong , Jihoo Moon , Daegyoum Kim, Joon Sang Kang

With the rapid miniaturization and integration of electronic devices, localized thermal hotspots have emerged as a critical challenge, demanding compact and energy-efficient cooling strategies. Conventional liquid-based thermal management typically relies on bulky mechanical components such as pumps or valves. To further miniaturize the cooling system, we demonstrate a low-power thermal management approach by electrochemically inducing oscillatory motion of eutectic Gallium-Indium (EGaIn) droplet. Experiments reveal that the oscillatory actuation of EGaIn reduces hotspot temperature by around 20 % relative to the condition without liquid metal droplet, and systematic studies show that cooling efficiency peaks at 3 Hz. Multiphysics simulations coupled with the energy equation reveal that the localized vortices induced by droplet deformation drive convection. This convection synergistically couples with conduction through the high thermal conductivity of EGaIn. This work establishes oscillatory liquid metal actuation as a compact, low-power paradigm for chip-level thermal management, with strong potential for integration into next-generation high-density electronic systems.

随着电子器件的快速小型化和集成化，局部热热点已经成为一个严峻的挑战，需要紧凑和节能的冷却策略。传统的基于液体的热管理通常依赖于笨重的机械部件，如泵或阀门。为了进一步小型化冷却系统，我们展示了一种低功耗的热管理方法，通过电化学诱导共晶镓铟（EGaIn）液滴的振荡运动。实验结果表明，在振荡驱动下，EGaIn的热点温度相对于无液态金属液滴的情况降低了约20%，系统研究表明，冷却效率在3hz处达到峰值。多物理场模拟结合能量方程表明，液滴变形引起的局部涡旋驱动对流。这种对流通过EGaIn的高导热性与传导协同耦合。这项工作建立了振荡液态金属驱动作为芯片级热管理的紧凑，低功耗范例，具有集成到下一代高密度电子系统的强大潜力。

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引用次数: 0

Thermosensitive adhesion boosts low-grade heat harvesting of ionic thermoelectric hydrogels 热敏附着力提高低品位的热收集离子热电水凝胶

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-01-09 DOI: 10.1016/j.nanoen.2026.111707

Jiafu Shen, Yiminghao Wang, Weidong Nie, Yu Dai, Fan Xia, Xiaojin Zhang

Low-grade waste heat is an overlooked but abundant source of energy that can be converted to electricity, e.g., using a thermoelectric generator (TEG). The development of high-performance thermoelectric materials, however, remains a challenge because it requires structural manipulation and interfacial matching of material-heat source and material-electrode. Here, we report thermosensitive adhesion-boosted body heat harvesting of calcium ion (Ca²⁺)-crosslinked ald-alginate-gelatin imine-based (CaAG) hydrogels. The CaAG hydrogel-assembled TEG shows a high Seebeck coefficient of 21.3 mV K⁻¹ with the maximum output power density of 5.2 mW m⁻² K⁻² at 10 K temperature difference (55 % relative humidity), which are much greater than those of most ionic thermoelectric materials. A flexible device comprising 16 TEGs generates a voltage of 2.34 V and an output power of 138 μW. Our work proposes an interfacial adhesion strategy for improving the thermoelectric performance and demonstrates the prospect of low-grade heat harvesting using hydrogels.

低品位的废热是一种被忽视的但丰富的能源，可以转化为电能，例如使用热电发电机（TEG）。然而，高性能热电材料的开发仍然是一个挑战，因为它需要材料-热源和材料-电极的结构操纵和界面匹配。在这里，我们报道了热敏粘附促进钙离子(Ca2+)-交联海藻酸盐-明胶亚胺基（CaAG）水凝胶的体热收集。在10 K温差（相对湿度为55 %）下，CaAG水凝胶组装的TEG的塞贝克系数为21.3 mV K−1，最大输出功率密度为5.2 mW m−2 K−2，远远大于大多数离子热电材料。由16个teg组成的柔性器件产生的电压为2.34 V，输出功率为138 μW。我们的工作提出了一种改善热电性能的界面粘附策略，并展示了使用水凝胶进行低品位热收集的前景。

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引用次数: 0