GREEN CHEMISTRY
·
2021
·Vol. 23
·期 5
·2177-2184
·
IF 10.182
Linlin Chen,Yanhong Chao,Xiaowei Li,Guolang Zhou,Qingqiang Lu,Mingqing Hua,Hongping Li,Xiaoguang Ni,Peiwen Wu,Wenshuai Zhu
With the rapid development of lithium-ion batteries (LIBs), the selective recovery of lithium and other valuable metals from spent LIBs is in urgent need because of the shortage of Li and valuable metals along with the toxicity of components. Herein, a tandem leaching system for the selective recovery of Li and other valuable metals (Co, Mn) from spent LIBs was engineered by employing formic acid and its derived deep eutectic solvent (DES) as leaching agents. Results illustrate that Li can be selectively leached by formic acid, and other valuable metals can be recycled by DES. The selective leaching of valuable metals from different types of LIBs were investigated, and it was found that the tandem leaching system was applicable to the different types of LIBs with recovery efficiencies >99% for valuable metals at leaching temperatures as low as 70 °C. This finding may provide an environmentally friendly and effective approach for the selective recovery of Li and other valuable metals from spent LIBs.
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2020
·
IF 16.28
Xiaohong Zou,Kaiming Liao,Di Wang,Qian Lu,Chuan Zhou,Ping He,Ran Ran,Wei Zhou,Wanqin Jin,Zongping Shao
Although aprotic Li-air batteries offer an attractive option for achieving ultrahigh energy density of electrochemical energy storage devices, the now-established system has so far fallen short of its potential due to a daunting challenge related to its open configuration, which results in not only the rapid corrosion of Li metal anodes but also the gradual evaporation of organic liquid electrolytes. Here, we show that these issues can be well addressed by protecting the Li-air battery with a new O 2 -permeable silica-aerogel-reinforced polydimethylsiloxane external membrane (OPSP). The highly flexible OPSP basically benefiting from hydrogen-bond cross-linking can be constructed in situ on any substrate with particularly desirable properties such as being water-/electrolyte-proof, O 2 -permeable, high thermotolerance, and transparent, which allows stable cycling of coin-type and flexible Li-air batteries under harsh conditions, such as a highly volatile DMSO electrolyte (over 660 h), a humid air (O 2 ) atmosphere (over 700 h) or circumstances in air (O 2 )-saturated liquid water (over 25 h). This work could potentially open a new research direction in developing O 2 -permeable membranes through hydrogen-bond cross-linking for the unfettered design of metal-air batteries.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Xianwei Geng,Ruowei Yi,Xiangfei Lin,Chenguang Liu,Yi Sun,Yingchao Zhao,Yinqing Li,Ivona Mitrovic,Rui Liu,Li Yang,Cezhou Zhao
Lithium-sulfur (Li–S) batteries have attracted more and more attention in recent years, as their theoretical capacity is several times larger than conventional lithium-ion batteries and they have a high energy density in secondary battery systems. In our work, a titanium carbide - titanium dioxide/single-walled carbon nanotube/sulfur (TiC–TiO 2 /SWCNT/S) cathode with high conductivity and effective polysulfides adsorption is prepared by a facile method for fabricating Li–S batteries. The batteries with this composite cathode show a good performance at 0.1 C due to relatively high utilization of sulfur, reaching 1338.6 mAh·g −1 specific capacity at first cycle and retaining 802.5 mAh·g −1 after 100 cycles. Meanwhile, it presents an excellent rate performance with 711.2 mAh·g −1 at 4 C, and recovers to 1006.9 mAh·g −1 when the current returns to 0.1 C. Also a slow capacity decay (0.045% decay rate per cycle) is observed at 1 C. These results suggest that a small amount of SWCNT can increase the conductivity of the whole composite to a great extent, and the strong adsorption ability of TiO 2 increases the cycle life. This work offers an efficient and low-cost strategy to obtain high performance batteries with great potential for commercial applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Siqi Zhang,Ying Wang,Dan Li,Ziye Kang,Feilong Dong,Haiming Xie,Jia Liu
The synergistic effect between noble metal and spinel-type compounds is beneficial for enhancing the electrochemical performance in a Li–O 2 battery. Herein, Ru-impregnated needle-like NCO embedded in porous carbon textiles (CTs) (x wt% Ru@NCO/CTs (x = 0, 0.5, 1, 2, and 5)) is applied as a flexible and binder-free O 2 electrode for Li–O 2 batteries. The NCO structure can benefit to the Li + migration, O 2 diffusion, and Li 2 O 2 accommodation. The Ru nanoparticles can promote OER and ORR reaction kinetics and lower the overpotential. A flexible Li–O 2 cell with 1 wt% Ru@NCO/CTs exhibits a good cyclic stability of 360 cycles with an overpotential of 0.78 V at a constant current density of 200 mA/g, a considerable rate performance, a high reversibility with the Li 2 O 2 formation and its reverse decomposition, and a good flexibility stability under bending and twisting at the different conditions. This work can contribute to the development of electrode material and its architecture design for portable and wearable devices .
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2020
·Vol. 16
·期 7
·1906634
·
IF 11.459
Zhuosen Wang,Jiadong Shen,Shaomin Ji,Xijun Xu,Shiyong Zuo,Zhengbo Liu,Dechao Zhang,Renzong Hu,Liuzhang Ouyang,Jun Liu,Min Zhu
Lithium–sulfur batteries (LSBs) are considered as one of the best candidates for novel rechargeable batteries due to their high energy densities and abundant required materials. However, the poor conductivity and large volume expansion of sulfur and the “shuttle effect” of lithium polysulfides (LPSs) have significantly hindered the development and successful commercialization of LSBs. Bean-like B,N codoped carbon nanotubes loaded with Co nanoparticles (Co@BNTs), which can act as advanced sulfur hosts for the novel LSB cathode, are fabricated. Uniform graphitic nanotubes improve the conductivity of the electrode and load more electroactive sulfur and buffer volume expansion during the electrochemical reaction. In addition, loaded Co nanoparticles and codoped B,N sites can significantly suppress the “shuttle effect” of LPSs with strong chemical interaction. It is established that the Co nanoparticles and codoped B,N can provide more active sites to catalyze the redox reaction of sulfur cathode. This stable Co@BNTs-S cathode displays an exceptional electrochemical performance (1160 mA h g −1 after 200 cycles at 0.1 C) and outstanding stable cycle performance (1008 mA h g −1 after 400 cycles at 1.0 C with an extremely low attenuation rate of 0.038% per cycle).
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2020
·
IF 7.216
Denghu Wei,Jie Yin,Zhicheng Ju,Suyuan Zeng,Haibo Li,Wei Zhao,Yanyan Wei,Huaiyong Li
Phosphorus sulfide cage molecule based on P 4 S 3 was investigated for the first time as anode material for the storage of alkali metal ions (Li + , Na + , K + ). Such P 4 S 3 sample was obtained in a large scale by a simple heating reaction of low-cost rep P and S. X-ray diffraction refinement analysis indicates that P 4 S 3 sample possesses a defect rich molecule crystal structure with S/P atom ratio of 0.74. The P 4 S 3 anode delivered a high reversible capacity of 1266 mAh g −1 for lithium-ion batteries at 0.1 A g −1 and good cycling performance. Experimental results demonstrated that the P 4 S 3 anode undergoes a reversible Li-storage reaction of P 4 S 3 + 11 Li + + 11 e − ↔ 0.5 Li 4 P 2 S 6 + 3 Li 3 P during cycling. It also exhibited a high capacity of 1002 and 378 mAh g −1 at 0.1 A g −1 for Na + and K + storage, respectively. These properties suggest the promising application of P 4 S 3 anode in high energy batteries.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Qipeng Yu,Weicong Mai,Weijiang Xue,Guiyin Xu,Qi Liu,Kun Zeng,Yuanming Liu,Feiyu Kang,Baohua Li,Ju Li
Lithium-metal batteries have been regarded as next-generation high-energy-density candidates beyond lithium-ion batteries. However, the lithium-morphology instabilities accompanied by continuous side reactions with electrolytes inevitably leads to dissatisfactory performances and even safety issues, where the unstable interface between lithium-metal anode and electrolytes has been regarded as the root cause. Artificial solid electrolyte interphase engineering has attracted a lot of attention to stabilize lithium-metal anodes. Here, a novel method with universality is reported to produce the organic–inorganic artificial solid electrolyte interphase. Using poly(propylene carbonate) as a sacrificial matrix, nanoparticles are dispersed on lithium-metal anodes surface uniformly to prepare artificial solid electrolyte interphase, where poly(propylene carbonate) turns into liquid propylene carbonate upon contact with lithium-metal anode. Silicon, Li1.5Al0.5Ge1.5(PO4)3, or Li1.4Al0.4Ti1.6(PO4)3 nanoparticles are coated to suppress lithium-morphology instabilities and demonstrated ∼4 times longer cycle life. Preparing various organic/inorganic artificial solid electrolyte interphase is feasible by introducing various components in the fabrication process of poly(propylene carbonate) membrane, endowing this approach with huge potential in the research of artificial solid electrolyte interphase.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2020
·
IF 8.247
Zhen Sun,Yanqing Lai,Na Lv,Liangxing Jiang,Ming Jia,Jie Li,Weizhai Bao,Fangyang Liu
Solid-state batteries (SSBs) exhibit a promising prospect due to their potential in terms of safety and energy densities . As an oxide electrolyte, cubic garnet solid electrolyte (cubic-Li 7 La 3 Zr 2 O 12 ) attracts wide attention due to the high ionic conductivity . However, the problem of poor contact between garnet solid electrolyte and lithium impairs the development of solid electrolytes. Herein, we demonstrate an effective modification method to cope with the interface issue between electrolyte and Li metal by introducing an Ag@WSe 2 composite layer. By applying this method, the interfacial resistance between the garnet electrolyte and Li metal is reduced to ~12.5 Ω cm 2 , which is nearly 150 times lower than the value of 1900 Ω cm 2 before modification. The WSe 2 acts as a framework to immobilize Ag, while Ag forms an Ag–Li alloy with lithium for lithium ions transportation. And other Ag@TMDs (transition metal dichalcogenides) composites have also been proven to have similar effects. In addition, the Li | Ag@WSe 2 -LLZO | LFP full cell demonstrates a satisfactory capacity and excellent cycle stability (500 cycles with 90% capacity retention rate) at room temperature .
✓ 已验证
产品关联
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2020
·Vol. 646
·期 15
·1285-1291
·
IF 1.24
Siyuan Li,Jiapeng Ji,Zeheng Li,Lijing Yan,Wei Jiang,Min Ling,Zhan Lin,Chengdu Liang
The application of Li-rich and Mn-based layered cathode materials is impeded by the discharge voltage decay and capacity fading upon cycling, despite their high specific capacity. Here, we combine pre-activation and nanoscale defects modification of lithium rich and manganese based layered materials to mitigate the above two serious problems through improved anionic redox activity and Li + conductivity. The optimum constructed nanoscale defects rich cathode material delivers a reduced voltage fading rate of 1.27 mV per cycle compared to 3.7 mV per cycle for the pristine material after 200 cycles at 1 C rate. Moreover, the nanoscale defects rich material delivers a high specific discharge capacity of 173.1 mAh · g –1 with a high capacity retention of 99.5 % after 200 cycles at 1 C rate superior than the pristine material (89.3 mAh · g –1 and 53.4 %, respectively). This study highlights the reversibility of oxygen redox in electrochemical stability and effectiveness of nanoscale defects in stabilize voltage.
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Energy & Fuels
·
2020
·Vol. 4
·期 8
·4264-4272
·
IF 5.503
Wen Huang,Daqian Ruan,Hui Chen,Kai Hu,Juan Wen,Wenqi Yan,Yusong Zhu,Yi Zhang,Nengfei Yu,Yuping Wu
Suppressing rapid capacity decay caused by the shuttle effect of dissolved lithium polysulfides between two electrodes is crucial to the realization of a practical lithium–sulfur (Li–S) batteries. Herein, the shuttle effect of polysulfides was efficiently inhibited by using a lightweight and thin functional separator in the form of coating three-dimensional interconnected nitrogen-doped graphene-like porous carbon nanosheets on one surface of a commercial polypropylene separator. This structure for a thin functional separator heightens the reversible capacity and cycle performance by doping nitrogen to chemically bond with polysulfides and the porous carbon layer to physically block polysulfides. As a result, the Li–S batteries based on the functional separators deliver an initial capacity of 1169.0 mA h g−1 at current rate of 1C and a substantial capacity of 845.3 mA h g−1 after 500 cycles, corresponding to a low capacity decay of only 0.055% per cycle. Even at a high rate of 3C, the batteries can still deliver a high reversible capacity of 743.6 mA h g−1 with good cycle performance.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2020
·Vol. 10
·期 9
·1633
·
IF 4.324
Zhi Zhang,Zichuan Yi,Liming Liu,Jianjun Yang,Chongfu Zhang,Xinjian Pan,Feng Chi
Lithium-sulfur battery (LSB) will become the next generation energy storage device if its severe shuttle effect and sluggish redox kinetics can be effectively addressed. Here, a unique three-dimensional hollow reduced graphene oxide microsphere decorated with ZnO nanoparticles (3D-ZnO/rGO) is synthesized to decrease the dissolution of lithium polysulfide (LiPS) into the electrolyte. The chemical adsorption of ZnO on LiPS is combined with the physical adsorption of 3D-rGO microsphere to synergistically suppress the shuttle effect. The obtained 3D-ZnO/rGO can provide sufficient space for sulfur storage, and effectively alleviate the repeated volume changes of sulfur during the cycle. When the prepared S-3D-ZnO/rGO was used as the cathode in LSB, an initial discharge specific capacity of 1277 mAh g−1was achieved at 0.1 C. After 100 cycles, 949 mAh g−1can still be maintained. Even at 1 C, a reversible discharge specific capacity of 726 mAh g−1was delivered.Keywords:ZnO;graphene;spray drying;hollow structure;lithium-sulfur battery
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Chao Wang,Xianfen Wang,Chunfu Lin,Xiu Song Zhao
Spherical vanadium phosphate (VPO 4 ) particles grown on flexible electron-conductive carbon fiber cloth (CFC) is developed as a binder-free anode for lithium-ion batteries (LIBs). The flexible composite electrode (VP@CFC) exhibits an excellent performance, including high reversible lithium-ion storage capacity (541.2 mAh g −1 at 0.1C), high rate capability (350.2 mAh g −1 at 10C), and good cycling stability (a capacity retention ratio of 91.8% after 250 cycles at 1C). Moreover, a flexible full cell fabricated with the VP@CFC as anode and a commercial LiCoO 2 (LCO) coated on CFC (LCO@CFC) as cathode displays good flexibility against mechanical bending at a wide range of angle while maintaining its good electrochemical performance. The flexible VP@CFC electrode holds a great promise in applications for flexible energy storage devices.
✓ 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）