ACS Applied Energy Materials
·
2022
·
IF 6.959
Zhenhua Liu,Tengfei Zhang,Shunlong Ju,Yanda Ji,Zhaotong Hu,Yingtong Lv,Guanglin Xia,Xuebin Yu
Lithium borohydride (LiBH4), with high compatibility to lithium anode, low grain boundary resistance, and light mass, is regarded as a promising solid-state electrolyte. However, poor ionic conductivity at room temperature limits its practical application in all-solid-state lithium-ion batteries (ASSLBs). In the present study, Li(NH3)xBH4@SiO2 (0 ≤ x ≤ 0.5) composites were obtained by ammonia absorption and simple ball-milling. Among them, Li(NH3)0.5BH4@SiO2 exhibits a high ionic conductivity of 3.95 × 10–2 S cm–1 at 60 °C, with a lithium transference number up to 0.9999 at 30 °C. More importantly, the experimental results and density functional theory (DFT) calculations show that the skeleton and interfacial interaction of silica can effectively improve the electrochemical performance of the full cell. All-solid-state lithium–sulfur batteries exhibit a specific discharge capacity of 1221.7 mAh g–1 after 10 cycles. Reversible capacities of 1589, 1381, 1176, 969, and 695 mAh g–1 could be achieved at 0.1, 0.2, 0.3, 0.5, and 1C, respectively. These findings prove that Li(NH3)xBH4@SiO2 is an attractive electrolyte for next-generation ASSLBs.
研究领域:
材料科学
·
固体离子学
·
储能
·
电化学
✓ 已验证
DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2014
·Vol. 30
·期 9
·1667-1673
·
IF 0.886
XUE Qing-Rui,LI Jian-Ling,XU Guo-Feng,HOU Peng-Fei,YAN Gang,DAI Yu,WANG Xin-Dong,GAO Fei
A lithium-rich solid-solution layered cathode material, Li[Li0.2Mn0.54Ni0.13Co0.13]O2, was synthesized using a fast co-precipitation method, and surface modified withAg/C via chemical deposition. The electrochemical properties,
structures, and morphologies of the prepared samples were investigated using X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), galvanostatic charge-discharge cycling, cyclic voltammetry (CV), electrochemical impedance
spectra (EIS), and energy dispersive X-ray spectroscopy (EDS). The XRD results showed that the pristine and Ag/Ccoated cathode materials both have hexagonal α-NaFeO2 layered structures with the R3m
space group. Microscopic morphological observations and EDS elemental mapping showed that a uniform Ag/C coating layer of thickness 25 nm was deposited on the surfaces of Li[Li0.2Mn0.54Ni0.13Co0.13]O2 particles. The Ag/C-coated Li[Li0.2Mn0.54Ni0.13Co0.13]O2
material gave an excellent electrochemical performance. The initial discharge capacity (0.05C) of the Ag/C- coated sample was 272.4 mAh ·g-1, with an initial coulombic efficiency of 77.4%, corresponding to 242.6 mAh·g-1 for the pristine sample, with an initial
coulombic efficiency of 67.6%, in the potential range 2.0-4.8 V (vs Li/Li+). After 30 cycles (0.2C), the Ag/C-coated Li[Li0.2Mn0.54Ni0.13Co0.13]O2 retained a capacity of 222.6 mAh·g-1, which was 14.45%
higher than that of Li[Li0.2Mn0.54Ni0.13Co0.13]O2. We also found that the Ag/C coating improved the rate capability of the solid-solution material Li[Li0.2Mn0.54Ni0.13Co0.13]O2. The
capacity retention (1C) of the Ag/C-coated sample was 81.3%, compared with the capacity at 0.05C. CV and EIS results showed that the Ag/C coating layer suppressed the oxygen release in the initial charge progress and lowered the surface film resistance and electrochemical reaction resistance
of the pristine sample.
研究领域:
材料科学
·
电化学
·
储能
·
锂离子电池
✓ 已验证
DOI
高影响因子
Nano Energy
·
2017
·
IF 12.343
Zhe Peng,Ning Zhao,Zhenggang Zhang,Hao Wan,Huan Lin,Meng Liu,Cai Shen,Haiyong He,Xiangxin Guo,Ji-Guang Zhang,Deyu Wang
Although Li metal has been regarded as one of the most promising anode materials , an unstable Li/electrolyte interface during the cycling process seriously limits its practical application in rechargeable batteries. Herein, we report a transplantable LiF-rich layer (TLL) that can suppress the side reactions between electrolyte and lithium metal. This peelable layer cross-linked by nanoscale LiF domains is obtained by electrochemically reducing NiF 2 electrodes and could be used to protect Li metal anodes . Cu-Li cells using the TLL protection can operate for more than 300 cycles with a Coulombic efficiency as high as ~ 98% in carbonate-based electrolytes. In Li-LiFePO 4 cells, lithium metal with a TLL still looks shiny after 1000 cycles (~ 6 months) in contrast to the black surface of bare lithium foil after ~ 500 cycles (~ 3 months). These results clearly demonstrate that the TLL could greatly limit the side reactions between lithium metal and the carbonate-based electrolytes, and may enable long-term stable operation of Li metal batteries .
研究领域:
材料科学
·
电化学
·
储能技术
·
锂金属电池
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Hongbing Zhang,Sijie Wang,Anqi Wang,Yuli Li,Feng Yu,Yong Chen
Recently, highly abundant natural materials have been used in the fields of energy storage because of their environmental friendliness and low cost. However, use of some natural materials like cellulose as host matrices of gel polymer electrolytes (GPEs) is challenging owing to the strong intra- and inter-molecular hydrogen bonding. Herein, a green GPE film was prepared by chemically grafting soft chain-polyethylene glycol (PEG) onto the backbone of cellulose. The introduction of PEG significantly improved the toughness of cellulose from 118 × 10 3 to 270 × 10 3 kJ m −3 , as well as raised the wettability in carbonate-based liquid electrolyte solutions from 22.6% to 141.7%. The first cycle coulomb efficiency stayed above 90%. The capacity retention of LiFePO 4 /Li batteries assembled with the as-obtained GPE reached 80.3% after 300 cycles at 0.2 C. In sum, the as-obtained cellulose-based GPEs look promising to replace separators and liquid electrolytes in Li-ion batteries.
研究领域:
储能
·
高分子科学
·
电化学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2026
·
IF 14.3
Wanqi Chen,Ruolan Tang,Bo Yang,Wenzhao Sun,Bo Zhang,Peize Lv,Banghe Lv,Haile Yan,Zongbin Li,Song Li,Liang Zuo
The Magnéli-phase λ-Ti 3 O 5 , characterized by its unique flat-band electronic structure, is a promising photothermal conversion material for solar-driven interfacial evaporation. However, its intrinsic thermodynamic instability at ambient temperature severely constrains large-scale practical application. To overcome this challenge, we developed a scalable synthesis strategy for stabilizing λ-Ti 3 O 5 via arc-melting followed by high-energy ball milling, coupled with Lithium (Li) doping. Structural and surface analyses confirm that Li incorporation effectively stabilizes the λ-phase. Morphological studies reveal particle refinement (∼1–2 μm) with increased surface roughness and oxygen vacancies, further enhancing solar absorption with overall reflectivity < 6% in the range of 250–2500 nm. Incorporating 10 wt.% of Li 0.25 Ti 2.75 O 5 particles into a Polyvinyl alcohol/Polyvinylpyrrolidone (PVA/PVP) porous hydrogel evaporator yielded an evaporation rate of 5.22 kg m −2 h −1 under one sun irradiation. Remarkably, the evaporator demonstrated excellent resistance to salt crystallization, maintaining stable performance during a 24-h continuous operation in 3.5 wt.% saline water. This work not only provides a practical and scalable approach for stabilizing λ-Ti 3 O 5 but also offers valuable insights into the development of efficient, durable photothermal materials for solar desalination technologies.
✓ 已验证
产品关联
DOI
高影响因子
Crystals
·
2023
·Vol. 13
·期 7
·1000
·
IF 2.7
Zhuanzhuan Zhang,Yanjie Liang
Cr3+-doped broadband infrared luminescent materials have attracted growing attention in consideration of their potential applications in phosphor-converted infrared light sources. However, discovering infrared-emitting luminescent materials with ultrabroadband emission and excellent thermal stability still remains a challenge. In this work, we report the significant improvement of infrared photoluminescence properties in Na3ScSi3O9:Cr3+phosphor via Li+substitution and Yb3+codoping. The prepared Na3ScSi3O9:Cr3+phosphor can produce broad infrared emission over 650–1350 nm with a peak maximum at 898 nm under the excitation of blue light. Through the substitution of Li+for Na+, the maximum infrared emission peak can be tuned from 898 nm to 850 nm. When the Li+content is 0.5, the integrated infrared luminescence intensity of the obtained Na2.5Li0.5ScSi3O9:Cr3+phosphor increases by 4.2 times compared with that of the Na3ScSi3O9:Cr3+phosphor, and the luminescence thermal stability is also improved significantly (58.5%@100 °C). Moreover, Yb3+codoping can simultaneously realize the characteristic infrared luminescence of Cr3+and Yb3+, resulting in a broadened spectral width due to efficient energy transfer from Cr3+to Yb3+. Finally, an ultrabroadband infrared light-emitting diode prototype is fabricated through a combination of the optimized Na2.5Li0.5ScSi3O9:2%Cr3+,0.5%Yb3+phosphor with a commercial 490 nm LED chip, giving an infrared output power of 5.2 mW at 320 mA drive current. This work provides an effective way to optimize the infrared photoluminescence performance of Cr3+-doped Na3ScSi3O9infrared phosphors.
研究领域:
材料科学
·
光学材料
·
固态照明
·
光子学
·
发光材料
✓ 已验证
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2018
·
IF 1.686
Bo Long,Xiangyang Zhou,Jingjing Tang,Juan Yang
Graphene encapsulated MnO nanorods , with a diameter of 60–120 nm and length of 1–1.5 μm (MnO@rGO) was synthesized. When evaluated as an anode material for LIBs, the MnO nanorods could not only better accommodate the huge volume change compared with bulk MnO during cycling, but also provide one dimensional charge transportation pathways. Meanwhile, graphene could efficiently alleviate the stress caused by volume change of MnO and improve the electrical conductivity . As a consequence, the as-obtained MnO@rGO hybrid delivers a high reversible capacity of 545 mA h g −1 at 0.5 A g −1 after 150 cycles, demonstrating its promising application in LIBs.
研究领域:
材料科学
·
储能
·
纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
RARE METALS
·
2014
·Vol. 33
·期 1
·86-90
·
IF 0.806
Zhu Xi-Lin,Han Shu-Min,Zhao Xin,Li Yuan,Liu Bao-Zhong
Hydrogen storage properties of 2LiNH 2 –MgH 2 – x NbH ( x = 0 and 0.05) composites and the catalysis of NbH on hydrogen sorption reaction of the Li–Mg–N–H system were investigated. Hydrogen sorption properties of 2LiNH 2 –MgH 2 system are effectively improved by adding NbH. Temperature programmed desorption results show the addition of NbH reduces the dehydriding onset temperature of 2LiNH 2 –MgH 2 system by 21 K. Approximate 3.62 wt% hydrogen in 2LiNH 2 –MgH 2 –0.05NbH composite is released following a 500 min at 433 K, whereas the amount of hydrogen desorption is only ~3.16 wt% for the pristine system under the same condition. The sample with NbH exhibits higher dehydriding rate compared with the pristine one. Moreover, hydrogen absorption rate increases by adding NbH into the 2LiNH 2 –MgH 2 system. Hydrogen absorption capacity of the samples with NbH is 3.23 wt% within 400 min, which is higher than that of pristine sample. Fine NbH particles homogeneously distribute in the 2LiNH 2 –MgH 2 –0.05NbH composite, and catalyze the hydrogen sorption reaction rather than reacts as a reactant into new compound.
研究领域:
材料科学
·
氢能
·
固态化学
✓ 已验证
DOI
高影响因子
eTransportation
·
2023
·
IF 11.9
Fengmei Song,Zhixuan Wang,Guochen Sun,Tenghuan Ma,Dengxu Wu,Liquan Chen,Hong Li,Fan Wu
Organic cathodes show promising advantages of extensive resources, high theoretical specific capacity, and mild synthesis conditions, etc., but suffer from low density, poor electronic conductivity, and high solubility in liquid electrolytes. Herein, an in-situ coating method is developed to overcome the above issues by realizing high-performance sulfide all-solid-state batteries with organic Li 4 C 8 H 2 O 6 cathode. Li 4 C 8 H 2 O 6 composite cathodes with carbon nanotubes (CNTs) and vapor grown carbon fiber (VGCF) were systematically studied to reveal that CNTs accelerate the electrochemical decomposition of sulfide electrolyte, despite the effectively improved electronic conductivity, rate capability and active material utilization. Therefore, in-situ coating of Li 4 C 8 H 2 O 6 onto CNTs (Li 4 C 8 H 2 O 6 @CNT) is developed to further improve the contact between Li 4 C 8 H 2 O 6 and CNTs, but to reduce the contact of CNTs with sulfide solid electrolyte and its decomposition. As a result, the Li 4 C 8 H 2 O 6 @CNT electrode demonstrates a high capacity of 200.3 mAh/g, and a high active material utilization rate (83.4% at 0.1C). It also exhibits a specific capacity of 85.9 mAh/g at a high cathode loading of 40 wt% and a high rate of 1C.
研究领域:
材料科学
·
电化学
·
储能技术
·
全固态电池
·
纳米材料
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2019
·Vol. 23
·期 11
·3145-3151
·
IF 2.531
Xu Xiaoyan,Cheng Jun,Li Yuanyuan,Nie Xiangkun,Dai Linna,Ci Lijie
As high energy density and enhanced safety are required for the lithium-ion battery development, all-solid-state battery has attracted significant attention. Herein, we report an all-solid-state full battery consisting of a Li 7 P 3 S 11 solid electrolyte coated silicon anode, Li 2 S/graphene composite cathode, and Li 7 P 3 S 11 solid-state electrolyte. With a high capacity for the silicon anode and Li 2 S cathode, this battery yields a high theoretical specific energy density up to 1495 Wh kg −1 , which is higher than that of lithium-ion batteries based on oxide cathodes. Moreover, Li 2 S cathode is used as lithium source instead of using metallic lithium, avoiding interface reaction between lithium metal anode and sulfide electrolyte Li 7 P 3 S 11 . This all-solid-state battery system we proposed could avoid the safety issues associated with the use of lithium metal and be a promising candidate for an enhanced energy density, which would promote their applications in the fields of electric vehicles and portable electronics.
研究领域:
材料科学
·
储能
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2021
·
IF 2.917
Shi-jie LU,Yang LIU,Zhen-jiang HE,Yun-jiao LI,Jun-chao ZHENG,Jing MAO,Ke-hua DAI
Single-crystal Ni-rich cathode material LiNi 0.88 Co 0.09 Al 0.03 O 2 (SC) was synthesized by a high-temperature solid-state calcination method. Physicochemical properties of primary and delithiated SC samples were investigated by X-ray diffractometry, X-ray photoelectron spectroscopy, and transmission electron microscopy. Electrochemical performance was characterized by long-term cycling, cyclic voltammetry, and in-situ impedance spectroscopy. The results indicated that high temperature rendered layered oxides to lose lithium/oxygen in the interior and exterior, and induced cationic disordering. Besides, the solid-phase synthesis process promoted phase transformation for electrode materials, causing the coexisting multi-phase in a single particle. High temperature can foster the growth of single particles, but it caused unstable structure of layered phase.
研究领域:
材料科学
·
电化学
·
储能
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 30
·期 3
·2327-2333
·
IF 2.324
Cao Renping,Xiao Hui,Zhang Falin,Cheng Xinyu,Su Lei,Xiao Fen,Luo Zhiyang,Chen Ting
A series of CaZrO 3 :Bi 3+ , CaZrO 3 :Eu 3+ , CaZrO 3 :Eu 3+ , Bi 3+ , and CaZrO 3 :Eu 3+ , Bi 3+ , Li + phosphors are synthesized by high-temperature solid-state reaction method in air. Their luminescence properties are researched, compared, and analyzed. CaZrO 3 :Bi 3+ phosphor under excitation at 310 nm emits deep-blue light with chromaticity coordinate (0.1612, 0.0254). CaZrO 3 :Eu 3+ phosphor under excitation at 310 and 395 nm shows red-emitting with chromaticity coordinate (0.6386, 0.3611). CaZrO 3 :Eu 3+ , Bi 3+ phosphor under excitation at 310 nm exhibits a systematically varied hue from deep-blue to red light by changing Eu 3+ ion concentration, and that with excitation at 395 nm only emits red light with chromaticity coordinate (0.6386, 0.3611). The energy transfer process from Bi 3+ to Eu 3+ ions may be indicated by their spectral properties. The optimal Eu 3+ and Bi 3+ ions concentrations are 5 mol% and 0.9 mol%, respectively. The emission intensity CaZrO 3 :Eu 3+ , Bi 3+ phosphor may be enhanced about 1.6 times due to the co-doping Li + ion as charge compensator role. The luminous mechanism of CaZrO 3 :Eu 3+ , Bi 3+ phosphor is explained by the simplified energy level diagrams of Bi 3+ and Eu 3+ ions.
研究领域:
材料科学
·
无机化学
·
固体物理
·
发光材料
·
光电功能材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）