JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Jingxiong Gao,Songyi Han,Haiming Hua,Jie Wu,Jing Zeng,Yuanyu Sun,Weiping Tang,Shuling Liu,Jinbao Zhao
To optimize the electrochemical behavior of NCM-based high-energy lithium-ion batteries (LIBs) in wide temperature ranges, Phenyl trifluoromethane sulfonate (PTM) is demonstrated as the novel electrolyte additive to enhance the electrochemical behavior of LiNi 0·6 Co 0·2 Mn 0·2 O 2 /graphite cells at 25 °C, −20 °C and 45 °C. The cells with 1.0 wt% PTM-containing electrolyte deliver 80.6% capacity retention after 350 cycles at 25 °C, 73.4% after 100 cycles at −20 °C, and 82.6% after 300 cycles at 45 °C, which are significantly higher than that in standard electrolyte (STD), corresponding to 36.4% at 25 °C, 40.3% at −20 °C, and failure at 45 °C, respectively. According to density functional theory (DFT) simulations and quantitative calculations, the PTM preferentially reduces on the anode and oxidizes on the cathode to participate in the formation of solid electrolyte interphase (SEI) films. In addition, the scanning electron microscopy (SEM), Transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and other analysis suggest that the formed SEI films are thinner and more stable for the electrolyte containing PTM, and the formed SEI films effectively control the decomposition of carbonate-based electrolytes and greatly decrease the increased resistance during the cycle.
研究领域:
电化学
·
材料科学
·
能源存储
·
锂电池技术
·
界面化学
✓ 已验证
DOI
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2018
·Vol. 304
·期 1
·1800477
·
IF 2.69
Ziqiang Xu,Wenlei Li,Zhi Chen,Dongxia Wang,Tingting Feng,Hanna Potapenko,Mengqiang Wu
A novel porous membrane of chemically modified polyvinyl butyral (mPVB), with improved thermal properties and chemical stability for lithium ion battery applications, is successfully synthesized by utilizing the chain extension reaction of the OH units from PVB. The porous mPVB membranes are obtained via the tape casting and phase inversion method. The corresponding gel polymer electrolyte (GPE) is achieved by immersing the as-prepared membranes in the liquid electrolyte. The electrochemical performances of the GPE show that the mPVB membranes have the features of good uniformity, high porosity ( ≈ 90%), great thermal stability, and high mechanical strength. Moreover, the GPE exhibits good chemical stability, a wide electrochemical window, as well as high ionic conductivity ( ≈ 1.21 × 10 −3 S cm −1 ). A test of a Li/GPE/LiFePO 4 battery cell shows a capacity of 147.7 mAh g −1 and excellent cycling stability, demonstrating the great potential of the mPVB-based GPE for lithium ion battery applications.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子化学
·
电池技术
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Yuxiao Li,Meishan Zhang,Xueyan Wang,Zhun Li,Lianhua Zhao
Sulfonated poly (ether ether ketone) (SPEEK, SP) with tetraethoxysilane (TEOS) and diethylethylammonium trifluoromethanesulfonate ([dema] [OTf]) were used to make SP/SiOx/OTf inorganic–organic composite membranes by the sol–gel method. The composite membranes were studied with respect to their structural, thermal, ionic liquid leeching (ILs), mechanical, and proton conduction properties. Fourier transform infrared spectroscopy (FT-IR) results showed that there exist intermolecular forces between the sulfonic groups, silica, and ILs in the composite membrane. Thermogravimetric (TG) results showed that the thermal stability of the SP/SiOx/OTf composite membrane is better than that of the pristine SPEEK membrane. IL leaching studies showed that the sulfonic group could help to reduce the loss of ILs. The introduction of silica in the SP/SiOx/OTf composite membrane could further reduce the loss of ILs, and also reduce the swelling degree of the composite membrane. Dynamic mechanical analysis (DMA) data showed that the introduction of silica can increase the flexibility of membranes, and improve the mechanical properties. A proton conductivity of 2.003 × 10 −2 S/cm was obtained for a 50 wt% [dema][OTf] doped SP-66/SiOx/OTF-50 composite membranes at 220 °C under anhydrous conditions.
研究领域:
材料科学
·
高分子化学
·
能源材料
·
电化学
·
膜科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Nan Sun,Hongjin Sun,Dongchen Tan,Qinglei Guo,Zhe Zhang,Zhiyuan Tao,Chengcheng Fang,Jingyuan Bu,Jijie Huang,Chengming Jiang
Transparent and flexible electronics research is a lively and promising domain that holds immense potential for a plethora of innovative applications in consumer electronics, healthcare, and renewable energy sectors. It would be extremely beneficial to develop internal energy sources that are transparent and do not alter the visual appearance would. In this study, we introduce the design of a transparent and flexible zinc-ion solid-state battery (TFZSB), all of whose component elements, such as the electrode, electrolyte/diaphragm, and packaging, are made of transparent and soft materials. The electrodes have been constructed with a framework of nanotube (NT) networks, while the electrolyte is built from a polyacrylamide (PAM) hydrogel material. The suggested electrode design effectively leverages the outstanding optical properties and flexibility of the NT network, while the construction assimilates the PAM hydrogel for providing electrical protection and fabricate the electrolyte, culminating in a resilient interface, which confers exceptional electrochemical stability under varying mechanical strains. With a strong visible-light spectrum transmittance of >80 % and a retention Coulombic efficiency of >92 % under large-scale strains, the TFZSB demonstrates a mass specific capacity of 122.6mAh/g. This TFZSB constitutes a breakthrough in the realm of wearable and smart electronics, and holds the potential to unlock a multitude of opportunities in the future by bridging the domains of energy storage and flexibility/transparency.
研究领域:
材料科学
·
电化学
·
能源存储
·
柔性电子学
·
纳米科技
·
高分子材料
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Fengchen Zhou,Xu-Sheng Yang,Jiangwen Liu,Jun Liu,Renzong Hu,Liuzhang Ouyang,Min Zhu
Owing to the high theoretic capacity (2596 mAh g −1 ) and suitable lithiation potential (～0.7 V vs. Li + /Li), Black phosphorus (BP) is considered as an ideal anode material for the fast-charging lithium-ion batteries. However, BP still faces the large volume change and low Li + transfer during the charge/discharge. In this work, a facile two-step high-energy ball milling method is developed to synthesis the black phosphorus@TiP 2 –C (CBP@TiP 2 –C) nanocomposite for the high-rate performance anode material, in which the conductive nanocrystalline TiP 2 is in-situ introduced and uniformly distributed into BP-C matrix. We reveal that the uniformly dispersed TiP 2 nanocrystals can enhance the electronic and ionic conductivities of active particles and the electrode reaction kinetics. The lithiation product cubic Li y TiP 4 phase is beneficial to release the stress, reduce the Li + diffusion energy barrier and accelerate the Li + extraction from LiP 3 upon delithiation . Moreover, the contact among different components can be improved by Ti–C and P–C bonds in the CBP@TiP 2 –C, thus ensuring excellent electric contact within the material and enhancing the structural stability of composites. As a result, the CBP@TiP 2 –C anode displays a high reversible capacity of 1007.4 mAh g −1 at 10.0 A g −1 and excellent capacity retention of 925.6 mAh g −1 after 500 cycles at 2 A g −1 .
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
固态化学
✓ 已验证
DOI
高影响因子
IONICS
·
2016
·Vol. 22
·期 8
·1343-1351
·
IF 2.119
Li Qi-Ling,Xu Wang-Qiong,Bai Hong-Li,Guo Jun-Ming,Su Chang-Wei
ZnO-coated LiMn 2 O 4 cathode materials were prepared by a combustion method using glucose as fuel. The phase structures, size of particles, morphology, and electrochemical performance of pristine and ZnO-coated LiMn 2 O 4 powders are studied in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), galvanostatic charge-discharge test, and X-ray photoelectron spectroscopy (XPS). XRD patterns indicated that surface-modified ZnO have no obvious effect on the bulk structure of the LiMn 2 O 4 . TEM and XPS proved ZnO formation on the surface of the LiMn 2 O 4 particles. Galvanostatic charge/discharge test and rate performance showed that the ZnO coating could improve the capacity and cycling performance of LiMn 2 O 4 . The 2 wt% ZnO-coated LiMn 2 O 4 sample exhibited an initial discharge capacity of 112.8 mAh g −1 with a capacity retention of 84.1 % after 500 cycles at 0.5 C. Besides, a good rate capability at different current densities from 0.5 to 5.0 C can be acquired. CV and EIS measurements showed that the ZnO coating effectively reduced the impacts of polarization and charge transfer resistance upon cycling.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
纳米材料
✓ 已验证
DOI
高影响因子
IONICS
·
2022
·Vol. 28
·期 11
·4943-4947
·
IF 2.961
Li Ze,Li Yonghua,Xie Huan,Zuo Zhaoyang,Chu Peng
As a kind of anode materials, iron matrix oxide cannot be widely used in the lithium-ion batteries due to their poor electrical conductivity and huge volume change during the electrochemical cycles. Herein, the porous carbon@Fe 2 O 3 composites are prepared by hydrothermal method. Due to the porous structure and introduction of carbon, the electrical conductivity can be greatly improved. Additionally, the porous structure could buffer the volume change during electrochemical cycles. As a result, the as-prepared carbon@Fe 2 O 3 composites deliver a high initial specific capacity of 1168 mAh/g at 0.1 C. Moreover, the carbon@Fe 2 O 3 composites show outstanding rate performance and superior cycling stability. This work provides a potential anode material for high electrochemical performance Li-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
功能复合材料
✓ 已验证
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 46
·26712-26717
·
IF 3.049
Yongzhao Su,Duotian Chen,Siyuan Yang,Shengsen Zhang,Yingju Liu,Yueping Fang,Qiao Zhang,Feng Peng
A photoelectrochemical (PEC) method based on the etching reaction of F ions on the surface of TiO2 nanorod arrays (TNRs) was proposed for the high sensitivity and selectivity detection of F ions. With the increase of F ion concentration, the surface etching reaction on TNR becomes more intense, resulting in the increased number of surface active sites, the reduction of electron transfer resistance, and the increase of photocurrent density. The prepared TNRs as a PEC probe exhibits a good linear relationship between photocurrent increment and the logarithm of F ion concentration in the range from 0.05 to 1000 nM with an ultra-trace detection limit of 0.03 nM for F ion detection.
研究领域:
分析化学
·
环境监测
·
纳米材料
·
电化学传感
·
生物医学工程
✓ 已验证
DOI
高影响因子
SOLID STATE IONICS
·
2020
·
IF 3.107
Yayu Guo,Huilan Guan,Wenxiu Peng,Xuelei Li,Yue Ma,Dawei Song,Hongzhou Zhang,Chunliang Li,Lianqi Zhang
Li 7 P 3 S 11 (70Li 2 S·30P 2 S 5 ) sulfide is a promising electrolyte candidate for all-solid-state lithium batteries (ASSLBs) owing to its high ionic conducivity and wide electrochemical stability window. However, the sensitivity to moisture and the poor interfacial compatibility with electrodes limit the conventional application of Li 7 P 3 S 11 . Herein, we present a substitution strategy to produce a O-incorporated 70Li 2 S·(30-x)P 2 S 5 ·xP 2 O 5 (mol%) sulfide electrolyte to address above issues. The elaborately designed electrolyte is prepared via wet vibration ball milling technique with P 2 O 5 substitution content of 1, 3 and 5. As a result, the 70Li 2 S·27P 2 S 5 ·3P 2 O 5 electrolyte displays the highest ionic conductivity of 2.61× 10 −3 S cm −1 which outperforms than that of pristine Li 7 P 3 S 11 (ionic conductivity of 1.35 × 10 −3 S cm −1 ) and the assembled LiCoO 2 @LiNbO 3 /70Li 2 S·27P 2 S 5 ·3P 2 O 5 /Li-In ASSLB exhibits the superior capacity retention of 93.2% after 100 cycles at 0.5C. The reason for the developed electrochemical performance lies in the substitution of the non-bridging sulfur atom with bridging oxygen atom, from which the interaction between electrolyte and lithium ions is weakened, thereby the rapid transfer of lithium ions is facilitated. Furthermore, Raman and XRD results indicate that the adverse interfacial reactions are suppressed through P 2 O 5 substitution. This work suggests that P 2 O 5 substitution is an effective strategy for sulfide electrolyte toward high energy all-solid-state lithium batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 44
·e56156
·
IF 2.7
Hao Sun,Qinghua Yang,Detao Kong,Yanrui Li,Yaolong He,NengHui Zhang,Hongjiu Hu
Polyethylene oxide (PEO)-based solid polymer electrolytes are regarded as promising electrolyte materials because of their safety and flexibility. However, low ionic conductivity at ambient temperature and poor mechanical properties have been a hindrance to its development. In this work, we thermally compressed the PEO-based electrolytes and explored the ionic conductivity, mechanical performance, free volume, and thermal properties of the electrolyte under different thermal pre-compressing strains (TPC-strains). The results show that TPC-strain can significantly improve the ionic conductivity, in-plane strength, stiffness, and cell specific capacity as well as the mechanical integrity of solid polymer electrolytes within the battery environment. However, it also results in a reduction in the modulus and stiffness of the SPEs in the through-plane. In particular, applying a TPC-strain of 10%–20% to the SPEs by thermal compressing may be a suitable option, which can increase the ionic conductivity of the through-plane to a factor of 3.4 compared with the uncompressed electrolyte, and increase the in-plane strength by up to 141%, resulting in better mechanical integrity during charging/discharging processes. At the same time, the compression modulus can be maintained at 80% or higher.
研究领域:
材料科学
·
电化学
·
高分子物理
·
能源存储
·
固态离子学
✓ 已验证
DOI
高影响因子
Nano Energy
·
2019
·
IF 15.548
Xiaodong Li,Sheng Fu,Shiyu Liu,Yulei Wu,Wenxiao Zhang,Weijie Song,Junfeng Fang
Operational stability remains the foremost concern delaying the commercialization of perovskite solar cells (PSCs). Ions diffusion from iodine-rich perovskite layer to metal electrode is one main reason for the irreversible devices degradation. Here we introduce chemically crosslinked TMTA (trimethylolpropane triacrylate) at both bulk perovskite layer and perovskite/PCBM interface to suppress the ions diffusion toward electrode. The TMTA in perovskite layer suppresses ions migration along grain boundaries and TMTA at perovskite/PCBM interface blocks ions diffusion toward electrode, owing to its continuous network structure and chemically inert nature. Diffusion experiment, permeation experiment and resistive random-access memory (RRAM) investigation confirm the effectively blocked ions diffusion in PSCs with TMTA whether under heat, light or electric field conditions. The resulting PSCs exhibit 7-fold improvement in operational stability at elevated temperature of 60 °C, retaining ~80% of initial efficiency after maximum power point tracking for 1000 h under continuous illumination. The PSCs with TMTA also exhibit good thermal stability and retain over 90% of the initial efficiency after aging at 60 °C for 1000 h.
研究领域:
材料科学
·
光伏技术
·
纳米材料
·
能源化学
·
器件物理
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Shaopei Jia,Yanhui Wang,Pengfei Tian,Shuyu Zhou,Haixia Cai,Hongwei Gao,Jianbing Zang
Nitrogen-doped mesoporous carbon (NMC) was synthesized via pyrolysis of cobalt-containing casein obtained by extraction from pure milk with the auxiliary of cobalt ions. The cobalt element in casein promoted specific surface area and N element doping amount of casein-derived porous carbon. The N-doped porous carbon obtained by carbonization at 800 °C (NPC-800) possessed a specific surface area of ∼886.7 m 2 g −1 , and the mesoporous size was centered at 2.7 and 7 nm. X-ray photoelectron spectroscopy analysis showed that the nitrogen content of NPC-800 was 3.29 at%. The NPC-800 was explored as a symmetric supercapacitor, which exhibited specific capacity of 380 F g −1 at a current density of 0.5 A g −1 , 218 F g −1 at a current density of 20 A g −1 , and high capacitance retention of 91.3% after charging/discharging 5,000 cycles.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
功能材料
·
碳材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）