JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2017
·
IF 4.01
Xueyi Guo,Xiao Cao,Guoyong Huang,Qinghua Tian,Hongyu Sun
A novel process of lithium recovery as lithium ion sieve from the effluent obtained in the process of spent lithium-ion batteries recycling is developed. Through a two-stage precipitation process using Na 2 CO 3 and Na 3 PO 4 as precipitants , lithium is recovered as raw Li 2 CO 3 and pure Li 3 PO 4 , respectively. Under the best reaction condition (both the amounts of Na 2 CO 3 and Li 3 PO 4 vs . the theoretical ones are about 1.1), the corresponding recovery rates of lithium (calculated based on the concentration of the previous stage) are 74.72% and 92.21%, respectively. The raw Li 2 CO 3 containing the impurity of Na 2 CO 3 is used to prepare LiMn 2 O 4 as lithium ion sieve, and the tolerant level of sodium on its property is studied through batch tests of adsorption capacity and corrosion resistance . When the weight percentage of Na 2 CO 3 in raw Li 2 CO 3 is controlled less than 10%, the Mn corrosion percentage of LiMn 2 O 4 decreases to 21.07%, and the adsorption capacity can still keep at 40.08 mg g −1 . The results reveal that the conventional separation sodium from lithium may be avoided through the application of the raw Li 2 CO 3 in the field of lithium ion sieve.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 32
·15859-15867
·
IF 9.931
Liangdong Lin,Feng Liang,Kaiyuan Zhang,Hongzhi Mao,Jian Yang,Yitai Qian
Lithium metal has been regarded as an ideal anode material for high-energy-density batteries. However, its high chemical reactivity, virtually infinite volume change and dendrite growth greatly reduce coulombic efficiency and increase potential safety hazards, thereby limiting its practical performance. Here, Li3P/LiCl-coated Li was successfully prepared by a simple reaction between PCl3 and Li at room temperature. Li3P, as a Li-ion conductor, reduces interface impedance and improves the electrochemical kinetics. LiCl, as the minor phase, enhances Li diffusion at the interfaces and reinforces the Li metal protection together with Li3P, suppressing the formation of Li dendrites. Thus, cycle stability and rate capability are greatly improved, as demonstrated both in symmetric cells and in the Li//LiCoO2 and Li//S full cells.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING & TECHNOLOGY
·
2020
·Vol. 43
·期 9
·1784-1791
·
IF 1.543
Xiaowei Li,Linlin Chen,Yanhong Chao,Wang Chen,Jing Luo,Jun Xiong,Fengxia Zhu,Xiaozhong Chu,Huaming Li,Wenshuai Zhu
The lithium titanium oxide ion sieve with good structural stability and high adsorption capacity is generally considered to be a promising adsorbent for lithium recovery. Herein, the lithium ion sieve precursor Li 2 TiO 3 was prepared based on amorphous TiO 2 , and then Li + was acid-eluted to obtain the lithium adsorbent H 2 TiO 3 , denoted as HTO-Am. The structure and adsorption properties of HTO-Am were investigated, and the results demonstrated that the HTO-Am prepared at the optimum temperature had excellent adsorption properties for Li + . The adsorption process follows pseudo-second-order kinetic and Langmuir isotherm equations, indicating that lithium is adsorbed chemically and monolayer on HTO-Am. HTO-Am ion sieves were prepared successfully for the first time and exhibited high selectivity, favorable adsorption rate, and cycle performance for Li + .
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 12
·3393
·
IF 5.076
Shasha Qu,Wenbin Wu,Yunfan Wu,Yanping Zhuang,Jie Lin,Laisen Wang,Qiulong Wei,Qingshui Xie,Dong-Liang Peng
Lithium cobalt oxide (LCO) is the most widely used cathode materials in electronic devices due to the high working potential and dense tap density, but the performance is limited by the unstable interfaces at high potential. Herein, LiF thin film is sputtered on the surface of LCO electrodes for enhancing the electrochemical performance and reducing the voltage polarization. The polarization components are discussed and quantified by analyzing the relationship between electrochemical polarization and charger transfer resistance, as well as that between concentration polarization and Li-ion diffusion coefficients. In addition, the decreased charge transfer resistance, increased lithium-ion diffusion coefficients, and stabilized crystal structure of LiF-coated LCO are confirmed by various electrochemical tests and in-situ XRD experiments. Compared to that of pristine LCO, the capacity and cycling performance of LiF-coated LCO is improved, and the overpotential is reduced upon cycling. This work provides reference for quantifying the various polarization components, and the strategy of coating LiF film could be applied in developing other analogous cathode materials.Keywords:voltage polarization;lithium cobalt oxide;lithium fluoride;lithium-ion battery
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-10
·
IF 12.121
Yang Ya-Nan,Li Ying-Xiang,Li Yi-Qiu,Zhang Tao
Lithium garnets have been widely studied as promising electrolytes that could enable the next-generation all-solid-state lithium batteries. However, upon exposure to atmospheric moisture and carbon dioxide, insulating lithium carbonate forms on the surface and deteriorates the interfaces within electrodes. Here, we report a scalable solid sintering method, defined by lithium donor reaction that allows for complete decarbonation of Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) and yields an active LiCoO 2 layer for each garnet particle. The obtained LiCoO 2 coated garnets composite is stable against air without any Li 2 CO 3 . Once working in a solid-state lithium battery, the LiCoO 2 -LLZTO@LiCoO 2 composite cathode maintains 81% of the initial capacity after 180 cycles at 0.1 C. Eliminating CO 2 evolution above 4.0 V is confirmed experimentally after transforming Li 2 CO 3 into LiCoO 2 . These results indicate that Li 2 CO 3 is no longer an obstacle, but a trigger of the intimate solid-solid interface. This strategy has been extended to develop a series of LLZTO@active layer materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 10
·3935-3945
·
IF 8.307
Kailin Luo,Ziyu Leng,Zhendong Li,Jiahe Chen,Nannan Sun,Jinting Xu,Xiaoling Cao,Zhe Peng
Suppressing severe lithium (Li) dendrite growth is a formidable challenge for high-energy-density lithium (Li) metal batteries (LMBs). Conventional lithiophilic coatings, despite their ability to improve the Li plating morphology, generate a compact conversion layer with a low electrolyte volume fraction, impeding the mass- and charge-transfers at the electrode interface and offsetting the benefits brought by lithiophilicity. Herein, a lithiophilic shuttle is obtained by the superposition of very thin layered copper oxide (L-CuO) flakes. After the conversion process, conjoined channels with a high electrolyte volume fraction can be maintained in the lithiophilic shuttle for fast and lateral Li+ transfer. In addition to the inherent high-Li-affinity and layered-structure-induced capacitive feature, the lithiophilic shuttle can afford stable and reversible Li plating/stripping at high current densities up to 3 mA cm−2 in LMBs with a practical capacity of 5 mA h cm−2. This work provides a new hierarchical lithiophilic structure to push forward high-energy-density LMBs for practical applications.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Shuzhang Niu,Si-Wei Zhang,Donyang Li,Xin Wang,Xiaomei Chen,Run Shi,Nan Shen,Mengtian Jin,Xian Zhang,Qing Lian,Runqing Huang,Abbas Amini,Yusheng Zhao,Chun Cheng
Constructing a multi-functionally artificial interphase layer is an emerging strategy to possibly address the issues of inhomogeneous Lithium (Li) nucleation and dendrite growth. In this study, a silver@fullerene (Ag@C 60 ) interphase layer with lithiophilic-lithiophobic gradient was designed, which was fabricated by series of deposition of silver and fullerene (Ag@C 60 ) on Cu foam current collector (ACCF). In this way, the typically uncontrolled Li deposition process will become a highly nucleation-guided process, due to the preferentially induced Li nucleation of Ag nanoparticles, which will guide the Li deposition sandwiched in C 60 and Ag layers. While the top lithiophobic fullerene layer is beneficial for regulating uniform Li-ion flux and facilitating the formation of LiF-rich SEI layer, finally suppressing the top deposition of Li metal, due to the high nucleation energy barrier on fullerene. Consequently, Li@ACCF exhibits a low overpotential of 14 mV and an ultra-stable cyclic life for more than 2500 h in symmetric cells. Besides, it also displays excellent long-term cycle life and high-rate performance in lithium-metal full cells. This deliberate design of the “push–pull” Li could ensure the uniform Li deposition sandwiched fullerene and silver layers and provide a feasible and efficient approach to advance the practical use of lithium-metal anodes for high-energy–density batteries.
研究领域:
材料科学
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电化学
·
能源存储
·
纳米材料
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界面工程
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电池技术
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2021
·Vol. 6
·期 2
·e12317
·
IF 15.122
Xingyi Wang,Kailin Luo,Lixin Xiong,Tengpeng Xiong,Zhendong Li,Jie Sun,Haiyong He,Chuying Ouyang,Zhe Peng
Severe lithium (Li) dendrite growth caused by the uneven overpotential deposition is a formidable challenge for high energy density Li metal batteries (LMBs). Herein, we investigate a synergetic interfacial kinetic to regulate Li deposition behavior and stabilize Li metal anode. Through constructing Li alloying matrix with a bi-functional silver (Ag)-Li 3 N blended interface, fast Li + conductivity and high Li affinity can be achieved simultaneously, resulting in both decreased Li nucleation and mass transfer-controlled overpotentials. Beyond these properties, a more important feature is demonstrated herein; that is, the inward diffusion depth of the Li adatoms inside of the Ag site can be restricted by the Li + solvation structure in a highly coordinating environment. The latter feature can ensure the durability of the operational Ag sites, thereby elongating the Li protection ability of the Ag-Li 3 N interface greatly. This work provides a deep insight into the synergetic effect of functional alloying structure and Li + solvation mediated interfacial kinetic on Li metal protection.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Weitao Jing,Kunyang Zou,Xin Dai,Junjie Sun,Qiang Tan,Yuanzhen Chen,Yongning Liu
Lithium metal has been considered one of the most ideal anode materials for batteries due to its ultrahigh theoretical capacity and energy density . However, the unstable SEI layer and the growth of Li dendrites cause poor cycling performance and even safety hazards, which also severely restrict the commercial application of Li metal batteries . In this paper, a Li-In alloy anode was designed and prepared by mechanical rolling of both Li and In pure metal foils together. Three-dimensional Li-In alloy network structures are formed by mechanical alloying during rolling, and the 3D Li-In alloy structure not only possesses strong lithium affinity but also possesses more interface between the Li matrix and the second phase formed in mechanical alloying, which can promote rapid diffusion at the interface and uniform deposition of lithium ions . As a result, the Li-In electrode shows an extremely low overpotential of approximately 35 mV at a high current density of 5 mA cm −2 during the lithium plating/stripping experiment. In addition, the battery revealed a higher discharge capacity of 295 mAh/g at 0.05 C and capacity retention of 80 % after 150 cycles when the Li-In alloy was used as the anode electrode in a cell with Li 1.2 Ni 0.2 Mn 0.6 O 2 as the cathode. The Li-In alloy can also be used as anode of Li-S battery, the result showed that the capacity decay rate was reduced from 0.22 % to 0.1 % after 200 cycles without any decoration treatment of S cathode except conductive carbon. This work verified that indium in the Li-In alloy can effectively protect the lithium anode and provides an idea for the practical application of lithium metal batteries.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
ChemNanoMat
·
2022
·Vol. 8
·期 10
·e202200324
·
IF 3.82
Hualun Li,Tian Chen,Wei Wang,Guandao Gao,Zhenda Lu
Graphical Developing an effective material to recover lithium from salt-lake brines or used batteries is highly demanded. We report a reduced TiO 2 nanomaterial with numerous lithium vacancies by lithiothermic reaction, exhibiting a high Li-ion adsorption capacity of 26 mg/g from solution. Considering the growing lithium demand and the potential shortage of lithium resource, developing an effective material to recover lithium from salt-lake brines or used batteries is highly needed. Here, we report a reduced TiO 2 nanomaterial (LiTiO 2 ) with numerous lithium vacancies by lithiothermic reaction, which exhibited high adsorption capacity of 26 mg/g from lithium-ion solution.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Fangduo Huang,Tingting Sun,Junliang Liu,Hao Yu,Qisheng Zang,Xinyan Feng,Xuefan Feng,Andrej Atrens,Ming-Chun Zhao,Fuqin Zhang
The commercial application of lithium-sulfur batteries has been delayed due to problems associated with the Li metal anodes. This work fabricated a β-LiAl+α-Al composite alloy anode by electrodeposition, and investigated the following three aspects: safety, LiAl||Li half-cell performance and LiAl||Sulfur full-cell performance. Diffusional lithium trapping enabled the electrode to withstand water immersion without undergoing complete reaction. There was growth of flat LiAl mounds during cycling in both cell types attributed to lithium diffusion in the LiAl electrodes, leading to the improved stability. The shifted working voltage in the LiAl||S full-cell was attributed to the higher electrode potential of LiAl, which did not affect the reaction pathway of the Li-S battery. These unexpected aspects could offer valuable guidance for future investigations into anodes with similar mechanisms of lithium storage through diffusion.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Y. X. Ren,L. Wei,H. R. Jiang,C. Zhao,T. S. Zhao
The rechargeability of the lithium anode in lithium–sulfur (Li–S) batteries is an issue for this type of battery. In this work, we demonstrate a Li–S full battery comprising a protected anode scaffold and a Li2S cathode. The stabilized performance is attained by an on-site fluorination strategy, using BiF3 for the interfacial coating of the anode. Unlike previously reported LiF protective coating derived from the vapor/solution depositions, BiF3 nanocrystals would be lithiated on-site to the anode surface and server as the protective layer. The chemically inertial Li3Bi alloy can provide additional ion-conductive paths and stitch the LiF to form a seamless protective layer, thereby suppressing the dendrite propagation and parasitic reactions effectively. With the designed anode structures and compositions, the high-loading full battery (8.05 mg cm–2) can achieve an exceptional utilization of both sulfur (898 mAh gS–1) and lithium (1533 mAh gLi–1) over 200 cycles, marking a step toward cyclable Li metal batteries at a high capacity.
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
危险品化学品经营许可证（带存储）