JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Peihan Li,Xingyu Chen,Yifei Sun,Ting Chen,Bo Zhang,Fugen Li,Juan Zhou,Shaorong Wang
Solid Oxide Electrolysis Cell (SOEC) is an efficient green hydrogen production technology, which is a reverse of Solid Oxide Fuel Cell (SOFC). In this paper, an anode-supported SOEC produced via multi-layer organic co-tape casting with co-sintering process is investigated for high temperature steam electrolysis , carbon dioxide electrolysis, and co-electrolysis. SOEC cathode must maintain its electrocatalytic activity in a high temperature and humidity condition. La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3-δ (LSCM) is one of the most promising cathode materials because of its superior electrocatalytic ability and redox stability. The anode-supported structure of electrolysis cell reduces ohmic resistance obviously and LSCM cathode exhibits good catalytic performance. To evaluate the performance of co-electrolysis, a continuous voltage of 1 V is applied for 256 h with 60% H 2 O and 40% CO 2 at 750 °C. The anode-supported SOEC with LSM((La 0.8 Sr 0.2 ) 0.95 Mn 0.5 O 3-δ )/LSM-YSZ(Zr 0.92 Y 0.08 O 2-δ )/YSZ/LSCM structure has good electrochemical performance and durability under co-electrolysis conditions combined with the distribution relaxation of time analysis of impedance spectra.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Yajian Duan,Chaojuan Li,Yaxin Hua,Shuai Wu,Yaqing Guo,Xiaogang Zhang,Yuqi Hu,Bin Yang,Yongnian Dai,Jin Shi
A novel membrane electrolysis cell has been designed to convert CO 2 into CO in organic electrolyte, with Cl 2 produced on the anode from NaCl oxidation in aqueous solution. The obtained CO and Cl 2 can be used as the feedstock to produce phosgene. Phosgene is a widely used acylating agent in a chemical industry, which can be used as feedstock to produce numerous high-value chemicals. Through this route, CO 2 can be converted into useful chemical, with huge economic profits created in this process. Our experiment results demonstrate that CO 2 can be efficiently converted into CO in our designed electrolyzer, and NaCl can be efficiently oxidized to Cl 2 . During long-term electrolysis process, NaHCO 3 is generated and accumulated between the membrane and the cathode. This phenomenon provides clear evidence for us to better understand the mechanism of CO 2 electro-reduction in organic electrolyte.
研究领域:
化学工程
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电化学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yaqi Zhang,Pengbin Lai,Xiaodie Deng,Peng Zhang,Jinbao Zhao
Designing suitable electrolytes and interphases is crucial for lithium metal batteries (LMBs), which are susceptible to excessive side reactions and lithium dendrite at the anode. Regulating the solvation ability of solvents and anions to tune the solvation structure and constructing an appropriate solid electrolyte interphase (SEI) are effective strategies for these problems. Herein, two different dissociated lithium salts (LiTFSI and LiBF 4 ) are screened to study the anion-oriented solvation regulation for SEI formation at the anode. It is found that BF 4 - is less likely to be displaced from the inner layer by solvents compared to TFSI - . Moreover, the resulting SEI with either an overly high or low content of inorganic components is not advantageous for long-term cycling performance. On the contrary, the dual salt electrolyte not only preferentially decomposes to form protective and balanced SEI with low impedance, but also maintains favorable bulk ion transport down to − 40 ℃. As a result, 4.3 V Li||LiCoO 2 full cells using the dual salt electrolyte deliver 88.7 % capacity retention after 200 cycles at 1C. This work highlights the significance of anion-oriented regulation in optimizing the performance of LMBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Zheng Ma,Yongyong Li,Yifeng Zheng,Wenlu Li,Xingyu Chen,Xiufu Sun,Xing Chen,Juan Zhou
The cathode of solid oxide electrolysis cell (SOEC) is used as a place for fuel gas electrolysis/co-electrolysis, and its performance significantly affects the efficiency of electrolysis. La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3-δ (LSCM) is a potential SOEC cathode material due to its excellent redox stability and catalytic ability for fuel gas. An electrolyte-supported LSCM/YSZ/LSCM symmetrical cell and LSCM/YSZ/LSCF full cell were prepared and evaluated for high temperature steam electrolysis, carbon dioxide electrolysis and co-electrolysis. Under the applied voltage, both the symmetrical electrolysis cell and the full electrolysis cell can effectively electrolysis CO 2 and H 2 O. During the experiment, by changing the operating conditions, the influence of different temperatures, concentration of CO 2 and H 2 O, and applied voltage was studied to evaluate the electrochemical performance of SOEC. In order to further verify the long-term performance of SOEC, constant voltage was applied for co-electrolysis of CO 2 and H 2 O. During the entire electrolysis process, the SOEC showed a stable current density of 0.1A·cm -2 under the applied voltage 1.5 V for more than 24 h.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Materials Letters
·
2021
·
IF 8.312
Tao Li,Yan Li,Yiling Sun,Zhengfang Qian,Renheng Wang
Localized high-concentration electrolytes (LHCEs) have captured considerable attention, since they retain the merits of high-concentration electrolytes while circumventing the disadvantages of high viscosity and high costs. Herein, a systematic comparison between two representative LHCEs (i.e., dimethyl carbonate (DMC)-based LHCE and 1,2-dimethoxyethane (DME)-based LHCE) in high-voltage Li metal batteries was performed. The results showed that DME-based LHCE possesses better compatibilty with Li metal anodes than DMC-based LHCE, and the underlying mechanism is clarified from the point of solid electrolyte interphase (SEI) formation. The two representative LHCEs showed comparable reductive stability, while Li+–DME showed better reductive stability than Li+–DMC. This means the more prominent decomposition of anions in DME-based LHCE, since SEI is derived from the competitive decomposition products of solvents and anions, which is further verified by the more-complete anion decomposition products found in SEI formed in DME-based LHCE. The inorganic-rich SEI with superior passivating ability is reponsible for the good compatibility of DME-based LHCE with Li metal anodes. The findings in this study provides fresh understandings on the stable nature of ether-based LHCE with Li metal anodes, which can serve as guidelines for advanced electrolytes engineering.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-15
·
IF 15.7
Li Wenbin,Duan Yijie,Ge Shaohua,Wu Wenbo,Song Keming,Zhang Jiyu,Tang Guochuan,Zhao Lingfei,Yan Pengfei,Wang Enhui,Zhang Zhiguo,Cao Yuliang,Yang Yong,Chen Weihua
The unstable electrolyte–electrode interface and the trace H 2 O in commercial organic electrolytes critically limit the cycling life of batteries. Herein, a locking-chain sodium 4,4′-(1,4-phenylenebis(oxy))-bis(butane-1-sulfonate)−15-crown-5 (15PBS) is designed for phase-to-interface electrolyte optimization. In the electrolyte phase, the strong hydrophilic sulfonate groups and 15-crown-5 in 15PBS effectively transform H 2 O from a reactive aggregated state (strong H-bond) into an inactive state (weak H-bond) through adsorption, effectively suppressing H 2 O-induced electrolyte decomposition. At the electrolyte–electrode interface, 15PBS preferentially adsorbed onto hard carbon, displacing solvents within the electric double layer to form insoluble phenyl-rich sulfide solid electrolyte interphase with fast Na + transport. Simultaneously, 15PBS facilitates the formation of stable cathode-electrolyte interphase on Na 0.72 Ni 0.32 Mn 0.68 O 2 , improving Na + migration kinetics and cycling reversibility. The hard carbon | |Na 0.72 Ni 0.32 Mn 0.68 O 2 full cell with high specific energy of 191.7 Wh kg −1 (based on the total active-material mass) delivers long lifespan of 2000 cycles at 500 mA g −1 . Moreover, 15PBS is compatible with ester-based electrolytes in lithium-ion batteries, enabling stable cycling of commercial graphite and Si/C negative electrodes. This work provides an effective approach for durable electrolytes towards safe and high-performance batteries.
研究领域:
电化学
·
能源材料
·
电池技术
·
界面化学
·
应用化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2025
·
IF 12.1
Xiangxiang Chen,Junru Wu,Wentao Zhang,Ji Li,Ziyao Gao,Xu Zhao,Kuang Yu,Yan-Bing He,Baohua Li,Feiyu Kang,Lele Peng
Constructing robust solid-electrolyte interphase (SEI) on electrodes is crucial for achieving stable lithium metal batteries in liquid electrolytes. However, intrinsic issues associated with liquid electrolytes remain unavoidable, such as the continuous corrosion of SEI and the high costs involved. Herein, a novel lithium salt-free solid-state polymer electrolyte (SPE) is introduced enabled by in situ polymerization of 1,3-dioxolane and 1,3,5-trioxane with the addition of ionic liquid to eliminate the drawbacks of liquid electrolyte. The homogeneous interaction between the polymer and ionic liquid constructs a synergistic Li + conduction pathway, promoting the extraction of Li + out of the cathode/anode and the smooth transport throughout the polymer network to endow a higher Li + transference number (0.63) and a comparable ionic conductivity (1.21 mS cm −1 ) to the conventional liquid electrolyte (0.45 and 5.51 mS cm −1 ). The absence of lithium salt prevents the oxidative decomposition of lithium salts in electrolytes to generate hazardous and corrosive acidic species. More intriguingly, an anion-dominated solvation configuration can be realized by the incorporation of ionic liquid with the polymer matrix, inducing the formation of an inorganic-rich and anti-corrosive SEI on the electrodes. The resulting salt-free SPE enables superior cycling stability in lithium||LiFePO 4 battery with a high capacity retention of over 92% after 780 cycles.
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
Advanced Physics Research
·
2025
·
IF 2.8
Jiaxiao Qi,Yongjing Wang,Haixiong Tang,Jiayu Zhao,Yu Hong,Qiong Li,Ming Jiang,Lijie Dong
Solid-state electrolytes (SSEs) are promising for lithium batteries with higher safety, cycling stability, and energy density. Among the various SSEs, solid polymer electrolytes (SPEs) are a highly preferred choice due to their high thermal stability, thin design, and good formability. However, polymer electrolytes have low ionic conductivity, for example, polyethylene oxide (PEO), one of the most dominant polyelectrolyte materials, has a low ionic conductivity at room temperature due to its high crystallinity. Theoretically, increasing the ionic active sites by decreasing its crystallinity is an effective strategy, but this may lead to its inability to form films or poor mechanical strength. In this work, the crystallinity of PEO is reduced by introducing succinonitrile (SN), and solution blow-spun polyacrylonitrile (PAN) fiber film is employed as the skeleton of the SPE to provide good mechanical strength. PEO-LiTFSI-SN/PAN SPEs have a tensile strength of at least 4.5 MPa. To provide more Li + active sites, PEO-LiTFSI-SN/MXene@PAN composite SPEs are fabricated by doping the PAN fibers with MXene rich in functional groups. The specific capacity of the LFP|PEO-LiTFSI-SN/MXene@PAN|Li button cell reaches 134.8 mAh g −1 in the first cycle, and the capacity retention rate of 100 cycles is 75.8% at 0.5 C 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
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Wei Xiao,Peiyi Shi,Zhengkui Li,Chong Xie,Jian Qin,Huijuan Yang,Jingjing Wang,Wenbin Li,Jiujun Zhang,Xifei Li
The resourceful and inexpensive red phosphorus has emerged as a promising anode material of potassium-ion batteries (PIBs) for its large theoretical capacities and low redox potentials in the multi-electron alloying/dealloying reactions, yet chronically suffering from the huge volume expansion/shrinkage with a sluggish reaction kinetics and an unsatisfactory interfacial stability against volatile electrolytes. Herein, we systematically developed a series of localized high-concentration electrolytes (LHCE) through diluting high-concentration ether electrolytes with a non-solvating fluorinated ether to regulate the formation/evolution of solid electrolyte interphases (SEI) on phosphorus/carbon (P/C) anodes for PIBs. Benefitting from the improved mechanical strength and structural stability of a robust/uniform SEI thin layer derived from a composition-optimized LHCE featured with a unique solvation structure and a superior K + migration capability, the P/C anode with noticeable pseudocapacitive behaviors could achieve a large reversible capacity of 760 mA h g −1 at 100 mA g −1 , a remarkable capacity retention rate of 92.6% over 200 cycles at 800 mA g −1 , and an exceptional rate capability of 334 mA h g −1 at 8000 mA g −1 . Critically, a suppressed reduction of ether solvents with a preferential decomposition of potassium salts in anion-derived interfacial reactions on P/C anode for LHCE could enable a rational construction of an outer organic-rich and inner inorganic-dominant SEI thin film with remarkable mechanical strength/flexibility to buffer huge volume variations and abundant K + diffusion channels to accelerate reaction kinetics. Additionally, the highly reversible/durable full PIBs coupling P/C anodes with annealed organic cathodes further verified an excellent practical applicability of LHCE. This encouraging work on electrolytes regulating SEI formation/evolution would advance the development of P/C anodes for high-performance PIBs.
研究领域:
电化学
·
材料科学
·
储能技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2021
·Vol. 33
·期 42
·2102134
·
IF 30.849
Yi-Hong Tan,Gong-Xun Lu,Jian-Hui Zheng,Fei Zhou,Mei Chen,Tao Ma,Lei-Lei Lu,Yong-Hui Song,Yong Guan,Junxiong Wang,Zheng Liang,Wen-Shan Xu,Yuegang Zhang,Xinyong Tao,Hong-Bin Yao
Electrolyte engineering via fluorinated additives is promising to improve cycling stability and safety of high-energy Li-metal batteries. Here, an electrolyte is reported in a porous lithium fluoride (LiF) strategy to enable efficient carbonate electrolyte engineering for stable and safe Li-metal batteries. Unlike traditionally engineered electrolytes, the prepared electrolyte in the porous LiF nanobox exhibits nonflammability and high electrochemical performance owing to strong interactions between the electrolyte solvent molecules and numerous exposed active LiF (111) crystal planes. Via cryogenic transmission electron microscopy and X-ray photoelectron spectroscopy depth analysis, it is revealed that the electrolyte in active porous LiF nanobox involves the formation of a high-fluorine-content (>30%) solid electrolyte interphase layer, which enables very stable Li-metal anode cycling over one thousand cycles under high current density (4 mA cm −2 ). More importantly, employing the porous LiF nanobox engineered electrolyte, a Li || LiNi 0.8 Co 0.1 Mn 0.1 O 2 pouch cell is achieved with a specific energy of 380 Wh kg −1 for stable cycling over 80 cycles, representing the excellent performance of the Li-metal pouch cell using practical carbonate electrolyte. This study provides a new electrolyte engineering strategy for stable and safe Li-metal batteries.
研究领域:
材料科学
·
电化学
·
储能
·
电池技术
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2025
·
IF 14.1
Wenjian Wang,Changyi Zheng,Shengjie Zhang,Yao Liu,Linjuan Zhang,Jianqiang Wang,Yonggang Wang
Micro-sized silicon (mSi) anodes offer high capacity for next-generation lithium-ion batteries but suffer from severe volume changes, causing unstable interphases and poor cycling. Traditional electrolytes derive unstable electrolyte/electrolyte interphases, and flammable solvents pose safety risks. Here, we introduce a non-flammable molten salt electrolyte, which consists of lithium bis(fluorosulfonyl)imide, potassium bis(fluorosulfonyl)amide, and cesium bis(fluorosulfonyl)imide in a mole ratio of 0.3:0.35:0.35 (noted as Li 0.3 K 0.35 Cs 0.35 FSA), that forms an inorganic interphase on mSi, stabilizing the electrode/electrolyte interface. Computational and experimental insights elucidate the FSA − anion decomposition-derived SEI predominantly of LiF, Li 3 N, Li 2 O, and Li 2 S, which exhibits mechanical resilience and low interfacial resistance, effectively accommodating the significant volume expansion of silicon during lithiation/delithiation. As a result, the Li||mSi half-cell achieves 60.7% capacity retention after 100 cycles with 99.5% average Coulombic efficiency. Overall, the Li 0.3 K 0.35 Cs 0.35 FSA electrolyte eliminates flammability concerns while enabling robust cycling performance. This work demonstrates a safe, high-energy battery system by coupling mSi anodes with stable molten salt electrolytes, addressing both interfacial instability and safety challenges in mSi-based lithium-ion batteries.
研究领域:
电化学
·
材料科学
·
能源存储
·
界面化学
·
锂电池技术
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Jiaojiao Chen,Yu Chen,Ke Bai,Jingyun Liu,Zewei Bao,Zeyi Xiao,Senqing Fan
To enhance mass transfer in hydrogen production from water electrolysis coupled with ethanol oxidation, a membrane electrolyzer combining flow-through and fed-batch operation was developed. The optimized Co 0.1 Ni 0.9 (OH) 2 /Ni foam electrode was used for ethanol oxidation, with a current density of 200 mA cm −2 at 1.383 V vs. RHE and a Tafel slope of 39.5 mV dec -1 . Employing this electrode as the anode, the mass transfer coefficient ( k m ) in the flow-through electrolyzer was 7.0 × 10 -6 m s −1 under the conditions of electrolyte flow velocity at 0.06 m s −1 , ethanol concentration at 0.2 M and KOH concentration at 6 M, which was 49 % higher than that in the flow-by electrolyzer. This enhancement in k m directly translated to an increase in the mass transfer limiting current density ( i L , from 194 mA cm −2 to 289 mA cm −2 ), significantly higher reaction rate. Both k m and i L would be increased with the increase of electrolyte circulation rates. An analysis of the relationship between intrinsic electrochemical current density and i L showed that the ethanol oxidation process is maintained at or near the i L , which improved current efficiency and product yield. A fed-batch strategy, regulating ethanol concentration around 0.2 M, enabled sustained co-production of acetic acid and hydrogen at current densities of 289 mA cm −2 , with a production rate of 18.54mol h −1 m −2 (electrode) and 43.75 mol h −1 m −2 (electrode) respectively, with an anodic Faradaic efficiency of 92 %. The hydrogen production energy consumption was 3.85 kWh Nm −3 under this condition in flow-through electrolyzer.
研究领域:
化学工程
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）