Small
·
2025
·Vol. 21
·期 37
·e02985
·
IF 12.1
Yi Chang,Wenyi Mao,Yu Zhang,Zirui Dong,Yunpu Zhang,Linke Li,Jiye Zhang,Jun Luo
Ductile thermoelectric materials and devices, capable of converting human body heat into electricity through the Seebeck effect, are emerging as a promising solution for powering wearable technologies. The recent discovery of Ag 2 S-based ductile thermoelectric materials has injected new vitality into this field, while the excess carrier concentration of these materials results in substantially lower thermoelectric performance compared to traditional inorganic thermoelectrics. Herein, by reducing the electronegativity of the anion sublattice and producing a silver deficiency at the cation site, an optimal carrier concentration is attained in the Ag 5.98 SSe 0.6 Te 1.4 material, leading to simultaneously high power factor (6.0 µW cm −1 K −2 ) and low total thermal conductivity (0.27 W m −1 K −1 ) at room temperature. Concurrently, it achieves a record thermoelectric figure of merit of 0.65 among Ag 2 S-based ductile thermoelectrics, while maintaining favorable phase stability and mechanical properties. A six-leg Ag 5.98 SSe 0.6 Te 1.4 flexible thermoelectric device exhibits a normalized maximum power density of 0.16 W m −1 , an order of magnitude higher than that of existing flexible organic as well as inorganic–organic hybrid thermoelectric devices, demonstrating significant progress in the development of ductile thermoelectrics.
研究领域:
材料科学
·
凝聚态物理
·
能源材料
·
纳米科技
·
功能材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Qianchen Wang,Xiangyu Ding,Jingbo Li,Haibo Jin,Hongcai Gao
A ceramic solid electrolyte of Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) with high ionic conductivity (4.28 × 10 −4 S cm −1 at 30 °C) and low activation energy (0.25 eV) is prepared by a three-step method, and the interfacial properties of the ceramic solid electrolyte are further modified by an in-situ polymerization strategy with the formation of a gel-polymer electrolyte with the thickness of 8.85 μm on the surface of LAGP. The presence of the gel-polymer electrolyte on the surface of LAGP inhibits the side reactions and the growth of lithium dendrites, as evidenced by the stable cycling of the lithium symmetric cells with the modified LAGP solid electrolyte for 1000 h at 25 °C. In addition, the high ionic conductivity and the stable interface of the modified LAGP solid electrolyte enable the solid-state lithium battery with a LiFePO 4 cathode, exhibiting superior electrochemical performances which can run stably at 25 °C with initial discharge specific capacity of 159.8 mAh g −1 at 0.1C.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Suli Chen,Haiying Che,Fan Feng,Jianping Liao,Hong Wang,Yimei Yin,Zi-Feng Ma
Solid-state rechargeable batteries using polymer electrolytes have been considered, which can avoid safety issues and enhance energy density. However, commercial application of the polymer electrolyte solid-state battery is still significantly limited by the low room-temperature ionic conductivity, poor mechanical properties, and weak interfacial compatibility between the electrolyte and electrode, especially for the room-temperature solid-state rechargeable battery. In this work, a poly(vinylene carbonate)-based composite polymer electrolyte (PVC-CPE) is reported for the first time to realize room-temperature solid-state sodium batteries with high performances. This in situ solidified PVC-CPE possesses superior ionic conductivity (0.12 mS cm–1 at 25 °C), high Na+ transference number (tNa+ = 0.60), as well as enhanced electrode/electrolyte interfacial stability. Notably, the composite cathode NaNi1/3Fe1/3Mn1/3O2 (c-NFM) is designed through the in situ growth of the polymer electrolyte inside the electrode to decrease interfacial resistance and facilitate effective ion transport in electrode/electrolyte interfaces. It is demonstrated that the solid-state c-NFM/PVC-CPE/Na battery assembled by a one-step in situ solidification method exhibits remarkably enhanced cell performances at room temperature compared with a reference NFM/PVC-CPE/Na assembled through a conventional ex situ method. The battery presents a high initial specific capacity of 104.2 mA h g–1 at 0.2 C with a capacity retention of 86.8% over 250 cycles and ∼80.2 mA h g–1 at 1 C. This study suggests that PVC-CPE is a very promising electrolyte for solid-state sodium batteries. This study also suggests a new method to design high-performance polymer electrolytes for other solid-state rechargeable batteries to realize high safety and considerable electrochemical performance at room temperature.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Ziqian Lu,Binyi Chen,Xing Cao,Ya Liu,Xiangyu Wang,Yubin Zhao,Shoujing Wei,Huanhui Chen,Liubiao Zhong,Yejun Qiu
A critical barrier to commercializing solid-state batteries lies in the inadequate performance of existing solid electrolytes, particularly their poor conductivity at room temperature and unsatisfactory long-term stability. In this context, a self-healing composite solid electrolyte based on succinonitrile (SCN) reinforced with lithium lanthanum titanate (LLTO) is introduced. Leveraging the increased interfacial lithium-ion (Li + ) transport channels in composite systems, the resultant LLTO-enhanced SCN electrolyte demonstrates remarkable ionic conductivity of 2.5 mS cm −1 at room temperature. The insight into the transport mechanism of Li + was provided using density functional theory. In addition to its superior conductivity, the electrolyte also exhibits excellent anodic stability, with an electrochemical oxidation potential reaching 5.1 V. Furthermore, LLTO effectively mitigates the inherent instability of SCN-based electrolytes while circumventing undesired side reactions. The self-healing properties enable autonomous repair of defects in the electrolyte, thereby enhancing battery safety characteristics. Consequently, symmetric Li cells demonstrated stable cycling for 1800 h at 0.1 mA cm −2 . Notably, the Li||LiFePO 4 cell retains 100 mAh g −1 of capacity at 1.0C after 1100 cycles at room temperature. The pouch cell further underscores the long-cycle durability and safety characteristics, with over 80 % capacity retention following 530 cycles. The investigation indicates that the LLTO-enhanced SCN electrolyte holds strong potential for the commercial application of solid-state lithium metal batteries under ambient conditions.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Tingting Cheng,Yiran Ding,Changwei Wu,Lixuesong Han,Nan Wei,Yong Liu,Ting Yu,Xiaofei Zhu,Liangcheng He,Xiao Wang,Mengqi Zeng,Lei Fu
Developing ultrathin giant magnetostrictive materials above room temperature creates a versatile platform for straintronic and spintronic applications because they can provide significant spin–lattice interaction on the nanoscale. Nevertheless, due to the suppression of magnetic ordering by thermal fluctuations, there are fewer ultrathin room-temperature magnetic materials available, not to mention ultrathin giant magnetostrictive materials at room temperature. Here, the ultrathin single-crystal Fe x Mn 1–x Ga 4 is reported with above-room-temperature Curie temperature ( T C , ≈ 324 K) and giant magnetostriction (magnetostrictive coefficient λ, –1670 ppm). The giant magnetostriction originates from the large magnetic anisotropy energy of Fe x Mn 1–x Ga 4 , which is caused by the strong spin coupling between d xy and d yz of Fe atoms due to the same spin channel near the Fermi level. The Villari effect is also observed in the Fe x Mn 1–x Ga 4 , in which the coercivity field increases dramatically by more than 300% at a tiny-scale applied strain of 0.69%. This work provides an avenue to realize giant magnetostriction in ultrathin materials at room temperature, laying the foundation for low-power-consumption, integrative, and high-performance nanoelectromechanical applications.
研究领域:
材料科学
·
凝聚态物理
·
纳米电子学
·
自旋电子学
·
功能材料
·
应变电子学
·
磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Chuankai Fu,Shuaifeng Lou,Yi Cao,Yulin Ma,Chunyu Du,Pengjian Zuo,Xinqun Cheng,Weiping Tang,Yongmin Wu,Yunzhi Gao,Hua Huo,Geping Yin
Recently, rechargeable lithium metal polymer battery (LMPB) attracts increasing attention because of its high safety and energy density properties. However, the high contact interfacial resistance of solid-state electrode and electrolyte is still an obstacle to satisfy the demand of high current density and long cycle stability, especially at room and lower temperature. Here, we develop a simple and efficient heat treatment method, to improve the interfacial compatibility between electrode and electrolyte in all-solid-state LMPB, successfully realizing workable LMPB at a reduced temperature (30 °C). The LMPB shows excellent cycling performance and rate capability in the voltage range of 2.5–4.2 V. The behavior of Li + plating/stripping on the surface of lithium metal anode is greatly enhanced. Meanwhile, the interfacial resistance of the LMPB decrease significantly after the heat treatment process .
研究领域:
材料科学
·
电化学
·
能源存储
·
固态电池
·
界面工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yan Yuan,Bin Wang,Kesi Xue,Yitian Ma,Xuyi Liu,Xiuping Peng,Manbo Liu,Hai Lu
Solid polymer electrolyte (SPE) is quite an attractive candidate for constructing high-voltage Li metal batteries (LMBs) with high energy density and excellent safety. However, sim ultaneous achievement of high-voltage stability against the cathode and good compatibility with the Li anode remains challenging for the current SPE technology. Herein, a dual-layered solid electrolyte (DLSE) consisting of an oxidation-resistant poly(acrylonitrile) (PAN) layer facing a high-potential cathode and a reduction-compatible poly(vinylidene fluoride) (PVDF) layer incorporated by Li6.4La3Zr1.4Ta0.6O12 (LLZTO) nanoparticles and an ionic liquid plasticizer in contact with a Li anode was fabricated. The uniquely designed DLSE holds favorable overall properties in ionic conductivity, Li+ transference number, and mechanical strength. Moreover, the combined advantages of two polymer electrolyte layers greatly address the interface issues on both the cathode and anode. Consequently, the high-voltage LMBs employing the DLSE exhibit excellent room-temperature performances including high rate capacity and long cycle life.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Haowen Chen,Kaiyi Luo,Pingping Qian,Yixiao Deng,An Li,Qiang Sun,Lei Yang,Yuquan Liu,Zhengshang Wang,Guang-Kun Ren,Qian Cao,Jun Tang
The donor effect of polycrystalline n-type bismuth telluride (Bi2Te3) during sample preparation usually results in the peak thermoelectric figure of merit (ZT) at temperatures above 400 K, severely restricting its application in the room-temperature (RT) range. A leap in RT performance requires innovative strategies that replace conventional methods of regulating point defects with limited effectiveness. We demonstrate excellent thermoelectric performance with an RT figure of merit, ZT = 1.2, and a maximum ZT = 1.3 at 325 K, by regulating the high-potential barrier heterointerfaces composed of La2O3 nanoparticles (NPs) and Bi2Te2.7Se0.3 (BTS). The created energy barriers at grain boundaries scatter and localize carriers through O–Bi ionic bonding and O–Te hybridization, enhancing the density of states in adjacent regions and leading to a rapid rise in the RT Seebeck coefficient (from 148.67 μV K–1 to 222.84 μV K–1 at 300 K). Another aspect of La2O3 NPs, as the second term of nano-oxide, introduces multiscale defect-scattering phonons, thereby enhancing thermal performance. Finally, at temperature difference ΔT = 10 K, a maximum output voltage and power, Vmax = 239.73 mV and Pmax= 10.50 mW, can be achieved with the fabricated TE module. Our findings underscore the full potential for promoting the performance of thermoelectric materials in the lower temperature region via high-energy barrier interface engineering.
研究领域:
材料科学
·
热电学
·
纳米材料
·
能量转换
✓ 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）