ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Yunxun Pu,Kailimai Su,Chengshuai Wang,Yan Wang,Bingjun Yang,Guangke Tian,Hongyan Du,Junwei Lang
Zinc-ion batteries, known for safety and efficiency, are a hotspot in electrochemical energy storage field. Nonetheless, the emergence of dendrites on zinc anodes during electrochemical cycles can lead to capacity attenuation and even failure, particularly under low temperatures. In this study, we develop a novel dendrite-free and low-temperature resistant Zn(ClO 4 ) 2 /Li 2 SO 4 /Dimethyl sulfoxide (DMSO) hybrid electrolyte by using DMSO as a hydrogen bond acceptor and solvation regulator. Our research demonstrates that, by reducing the desolvation energy barrier of the Zn 2+ solvation sheath and the nucleation overpotential of Zn deposition, DMSO effectively inhibits zinc dendrites and side reactions. Furthermore, DMSO disrupts hydrogen bonding between water molecules, preventing electrolyte freezing at low temperatures. As a result, at 0.5 mA cm −2 , the Zn||Zn symmetric device using this hybrid electrolyte exhibits consistent operation for over 4000 h even at -25 °C, featuring a minimal deposition/dissolution overpotential of approximately 0.045 mV. Additionally, at -20 °C, the Zn||Zn(ClO 4 ) 2 -Li 2 SO 4 -DMSO||LiFePO 4 battery demonstrates stable cycling for over 600 cycles at 0.6 C (1 C = 170 mA g − 1 ), delivering a capacity of 103 mA h g −1 .
研究领域:
电化学能源存储
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Xiaopeng Fu,Meng Xiao,Meihua Chen,Zhian Zhang,Limin Zheng,Fang Wan,Xiaodong Guo
In recent years, a large number of spent lithium iron phosphate (LiFePO4, abbreviated as LFP) batteries have been retired. Selective leaching is the most suitable recycling option for spent LFP (S-LFP). However, the current mainstream oxidants and acids are not economical, safe, and green. Herein, we constructed a HNO3-O2 system to achieve efficient leaching of Li from S-LFP. HNO3 can be recovered by high temperatures after use to achieve the recycling of acid, and O2 is more economical and safer than mainstream oxidants. In the comfortable oxidizing environment provided by HNO3, O2 is used to oxidize Fe2+ in S-LFP into Fe3+, and Li+ is extracted from S-LFP into the solution with a leaching rate of almost 100%. The lithium-rich solution is further used to leach the Li from the spent graphite anode, and then the Li in the solution is captured using CO2 to obtain Li2CO3. The iron phosphate (FePO4) slag from Li extraction is regenerated into LFP based on the above obtained Li2CO3 through carbon thermal reduction. The regenerated LFP displays a high discharge capacity of 163.85 mAh g–1 and a stable cycling performance, which are comparable to those of commercial LFP.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Tianshun Yao,Huan Zhang,Cai Qi,Jun Ma,Zihao Zhou,Quan Sun,Li Song,Yachao Jin,Mingdao Zhang
The exponential growth of electric vehicles (EVs) will lead to the large-scale retirement of lithium iron phosphate (LFP) batteries in the future. This work proposes an environmentally friendly solid-phase strategy for regenerating waste LFP cathode materials. The regeneration mechanism is also investigated through characterizations. The method involves lithium supplementation, crystal structure repair and Cu doping. Glucose is used as a reducing agent to reduce a large amount of Fe 3+ in waste LFP to Fe 2+ , while the addition of Li + is used to fill the lithium vacancy in waste LFP. Notably, Cu doping increases the vibrational density and conductivity of the regenerated material and expands the ion diffusion channel, which significantly enhances the electrochemical performance of the regenerated LFP cathode. Moreover, the specific capacity of regenerated LFP (Cu@R-LFP) at 0.05C is 160.15 mAh/g, about 97.65 % of that of new LFP (N-LFP). The capacity retention rate of Cu@R-LFP can be as high as 81.19 % even after 1,000 cycles at 1C rate. The method proposed in this study provides a simple and scalable strategy for recycling waste LFP cathode materials.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2012
·
IF 4.951
Jin Chen,Liuming Yan,Baohua Yue
A new type of nano-structured LiFePO 4 particles were prepared exhibiting enhanced apparent lithium ion diffusion dynamics. The nano-structured LiFePO 4 particles possess nano-layered morphology and were converted hydrothermally from the nano-layered templates composed of mainly ferrous metaphosphate and graphitic carbon. And the nano-layered templates were prepared by pyrolysis conversion of the nano-layered ferrous phenylphosphonate templates, or the raw nano-layered templates. Though the nano-layered LiFePO 4 particles possess characteristics of nanostructured LiFePO 4 , the overall dimensions are still in micro-size and the tap density is about 1.36 g cm −3 comparable to the micro-sized LiFePO 4 particles. The apparent lithium ion diffusion coefficients are 1.5 × 10 −11 and 3.1 × 10 −13 cm 2 s −1 evaluated using the cyclic voltammetry and electrical impedance spectroscopy, respectively. In addition, the organic moiety from the raw nano-layered templates was converted into tiny carbon particles with abundance of ordered graphitic structure well dispersed in the nano-layered LiFePO 4 particles; and the nano-layered LiFePO 4 particles possess an electronic conductivity as high as 3.28 mS cm −1 .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Nano
·
2026
·
IF 16
Chengzhi Feng,Wei Mao,Peiji Yin,Xuan Cao,Jian Cheng,Xijun Wei,Qingchun Zhang,Lixian Song,Zhongti Sun,Yingze Song
The rapid growth of the electric vehicle industry has led to a large accumulation of lithium-ion batteries. Direct regeneration of spent cathode materials is a promising recycling strategy, yet its industrial application is often constrained by the energy-intensive processes required for lithium replenishment and structural repair under harsh conditions. In this work, the uniform and lithium-rich layer is constructed on the surface of spent LiFePO4 (S-LFP) via the spontaneous adsorption of organic lithium carboxylate salts. This tailored interface serves as an ideal precursor state for the subsequent thermal annealing step, enabling the synergistic completion of the lithium insertion into the lattice and effective defect healing. This adsorption-mediated interfacial engineering is pivotal to the whole regeneration process. The regenerated LFP (R-LFP) exhibits favorable electrochemical performance, delivering a high specific discharge capacity of 145.5 mAh g–1 at 1.0 C and retaining 88.1% of its capacity after 400 cycles. Compared with conventional one-step solid-state methods, this hybrid approach reduces overall energy consumption and presents a compelling, scalable pathway for the direct regeneration of S-LFP, thereby advancing the development of sustainable and cost-effective battery recycling solutions.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 10
·6983-6992
·
IF 3.9
Yiqiong Peng,Lingzhi Zeng,Shuai Dai,Feng Liu,Xi Rao,Yongping Zhang
Self-assembled lithium iron phosphate (LiFePO4) with tunable microstructure is an effective way to improve the electrochemical performance of cathode materials for lithium ion batteries. Herein, self-assembled LiFePO4/C twin microspheres are synthesized by a hydrothermal method using a mixed solution of phosphoric acid and phytic acid as the phosphorus source. The twin microspheres are hierarchical structures composed of primary nano-sized capsule-like particles (about 100 nm in diameter and 200 nm in length). The uniform thin carbon layer on the surface of the particles improves the charge transport capacity. The channel between the particles facilitates the electrolyte infiltration, and the high electrolyte accessibility enables the electrode material to obtain excellent ion transport. The optimal LiFePO4/C-60 exhibits excellent rate performance with discharge capacity of 156.3 mA h g−1 and 118.5 mA h g−1 respectively at 0.2C and 10C, and low temperature performances with discharge capacity of 90.67 mA h g−1 and 66.7 mA h g−1 at −15 °C and −25 °C, respectively. This research may provide a new pathway to improve the performance of LiFePO4 by tuning the micro-structures by adjusting the relative content of phosphoric acid and phytic acid.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yunlong Xu,Baichao Zhang,Zhaofei Ge,Haoji Wang,Ningyun Hong,Xiangting Xiao,Bai Song,Yangyang Zhang,Ye Tian,Wentao Deng,Guoqiang Zou,Hongshuai Hou,Xiaobo Ji
With the rapid popularization of LiFePO 4 (LFP) based lithium-ion batteries, the rational recycle of spent LFP has become focus in recent years. Direct regeneration of spent LFP has received continuous attention as it can effectively eliminate the capacity attenuation caused by lithium loss and Fe (Ⅲ) phase and maintain the original LFP structure. Here, we propose an efficient approach on basis of mild chemical relithiation combining with appropriate thermal annealing to realize the direct regeneration of spent LFP without high temperature/pressure or extra hazardous chemical. Specifically, subtle reductive hydrogen peroxide in LiOH solution is utilized to remove the structural defects of a degraded LFP cathode, and the restored LFP shows excellent cycling stability and rate capability (a capacity retention of 84.9% after 1000 cycles at 5C). Moderate regeneration conditions guarantee high security and profit of this strategy compared with other regeneration technologies, which reveals a favourable potential of practical application and is expected to the sustainable development of spent lithium-ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2023
·
IF 6.1
Hu Fu,Wenhua Xu,Zhongwei Zhao,Lihua He
Determination of lithium ions is very important for extraction of lithium from salt lakes. Electrochemical sensor is an ideal choice, but it is not available so far. Here, a voltammetric sensor based on lithium iron phosphate (LiFePO 4 ) was developed. Single-crystal LiFePO 4 dominated by the (010) lattice plane was synthesized using hydrothermal method ; it had good selectivity for lithium ions. Lithium ions were preferentially intercalated into LiFePO 4 even if molar ratio of sodium ions , potassium ions , magnesium ions or calcium ions to lithium ions reached 10:1. The intercalation and deintercalation of interfering ions should be avoided because this reduced the selectivity of LiFePO 4 for lithium ions. Lithium ion concentration of synthetic Uyuni Salt Lake solution was determined using the standard addition method. The measurement result was only 0.34 % higher than the theoretical value. The sensor provides a highly selective lithium ion analysis method at an extremely low cost, which was very promising to be widely used.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Xiaofei Sun,Xiangguo Hou,Xuesong Mei,Yanbin Han,Bin Liu,Quansheng Li,Zikang Wang,Wei Tang,Yuping Wu,Wenjun Wang,Jianlei Cui
High-capacity rechargeable batteries are crucial for portable electronics, electric vehicles, and smart power grids. High-quality porous Al current collectors with well-designed hole size and hole density are expected to strengthen lithium transportation as well as to accommodate volume variations during fast charging and discharging. Ultrafast femtosecond laser drilling is exploited in this paper to fabricate 3D porous current collectors with precisely controlled hole size and porosity. With optimized laser processing parameters, a series of high-quality porous Al foils with different hole diameters and porosities are designed, simulated, and prepared to investigate their influence on the battery performance of the LiFePO4 electrode. The electrode using laser-drilled Al foil with a hole diameter of 60 μm and a porosity of 15% shows pretty high capacities at various charge/discharge rates. The performance improvement is ascribed to the large roughness and high surface area of the 3D Al foil, the strong connection between electrode materials and the porous current collector, the high loading density and efficient utilization of active materials, the good wettability and facile penetration of the electrolyte and, thus, the high Li+ diffusivity, and the buffering of volume/stress variation during charging/discharging in the 3D porous electrode.
研究领域:
材料科学
·
能源技术
·
电池工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Chengming Du,Yan Li,Hengjun Tai,Wentao Li,Chengzong Li,Tao Li
The rapid growth in end-of-life LiFePO 4 batteries demands sustainable recycling technologies. However, conventional leaching methods suffer from excessive chemical consumption and high saline wastewater discharge, posing environmental and economic challenges. Here, we report a sulfuric acid aerosol roasting strategy, employing air as a green oxidant, that enables efficient selective lithium extraction with near-stoichiometric acid usage. During roasting, sulfuric acid droplets undergo evaporative concentration, forming a thin H 2 SO 4 film on LiFePO 4 particles that drives interfacial redox reactions. The H 2 SO 4 film creates a gas–liquid–solid interface that mediates redox reactions among LiFePO 4 , O 2 , and the generated SO 2 , producing water-soluble Li 2 SO 4 and insoluble FePO 4 . In this process, O 2 serves as the terminal oxidant, allowing SO 2 to be fully reoxidized and thus preventing its emission. In addition, unreacted acid aerosol is carried away with the off-gas and can be efficiently recovered, enabling near-theoretical acid consumption. Upon roasting at 300 °C for 45 min, the process delivers 99.9 % Li leaching efficiency with minimal Fe (1.0 %) and negligible P (<0.1 %) dissolution. Coupled with a fluidized roasting design, this method ensures uniform aerosol–solid contact and high throughput, presenting a scalable, environmentally benign solution for LiFePO 4 recycling. The resulting FePO 4 residue can be directly utilized to regenerate LiFePO 4 with excellent cycling stability, thereby enabling closed-loop LiFePO 4 regeneration.
研究领域:
材料科学
·
环境工程
·
电池回收
·
可持续技术
·
化学工艺
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2018
·
IF 6.945
Bo Tong,Jiawei Wang,Zhenjie Liu,Lipo Ma,Zhibin Zhou,Zhangquan Peng
The electrochemical performance of lithium-ion batteries is dominated by the interphase electrochemistry between the electrolyte and electrode materials . A multitude of efforts have been dedicated to the solid electrolyte interphase (SEI) formed on the anode. However, the interphase on the cathode, namely the cathode electrolyte interphase (CEI), is left aside, partially due to the fact that it is hard to single out the CEI considering the complicated anode-cathode inter-talk. Herein, a partially delithiated lithium iron phosphate (Li 0.25 FePO 4 ) electrode is used as the anode. Owing to a high voltage plateau (≈3.45 V vs. Li/Li + ), negligible reduction reactions of electrolyte occur on the L 0.25 FePO 4 anode. Therefore, the CEI can be investigated exclusively. Using a LiFePO 4 |Li 0.25 FePO 4 symmetric cell configuration, we scrutinize the compatibility of the electrolytes containing a wide spectrum of lithium salts , Li[(FSO 2 )(C m F 2m+1 SO 2 )N] (m = 0, 1, 2, 4), with the LiFePO 4 , in both cycling and calendar tests. It is found that the Li[(FSO 2 )( n -C 4 F 9 SO 2 )N] (LiFNFSI)-based electrolyte exhibits the highest compatibility with LiFePO 4 .
研究领域:
电化学
·
能源材料
·
锂离子电池
·
界面化学
✓ 已验证
DOI
高影响因子
ChemSusChem
·
2022
·Vol. 15
·期 8
·e202102475
·
IF 9.14
Zhenjie Cheng,Chenggang Wang,Yansong Zhu,Cheng Wang,Xiaolei Jiang,Zhao Qian,Bo Chen,Jian Yang
Li-ion batteries with LiFePO 4 cathode and Li 4 Ti 5 O 12 anode show promise for storing renewable energy. However, their low output voltage results in a low energy density. In contrast, dual-ion batteries with graphite cathode and Li 4 Ti 5 O 12 anode can achieve a high output voltage of >3.0 V. In this study, mesocarbon microbeads (MCMB)@LiFePO 4 ||Li 4 Ti 5 O 12 dual-ion batteries are developed to address these issues. In the cathode, MCMB improves the conductivity of LiFePO 4 and increases the output voltage by the intercalation of anions in the cell voltage range of 2.1–3.5 V. Moreover, the LiFePO 4 shell sustains the structural integrity of MCMB and generates in situ a cathode-electrolyte interphase (CEI) with rich LiF. Owing to these unique compositional and structural features, MCMB@LiFePO 4 ||Li 4 Ti 5 O 12 manifests much better electrochemical performance than LiFePO 4 ||Li 4 Ti 5 O 12 and MCMB||Li 4 Ti 5 O 12 . It sustains 89.6 % of the initial capacity after 1200 cycles at 0.2 A g −1 and achieves a specific energy up to 128 Wh kg −1 at 179 W kg −1 . Graphical Block rockin’ beads : The low output voltage of LiFePo 4 ||Li 4 Ti 5 o 12 batteries results in a small energy density. In this study, mesocarbon microbeads (MCMB)@LiFePo 4 ||Li 4 Ti 5 o 12 dual-ion batteries are developed to address this issue. MCMB increases the output voltage by the anion intercalation and the LiFePo 4 shell sustains the structural integrity of MCMB and generates a LiF-rich cathode-electrolyte interphase.
研究领域:
电化学
·
储能
·
材料科学
·
锂离子电池
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）