共查询到20条相似文献，搜索用时 15 毫秒
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Lithium‐Ion Batteries: Experimental Studies on Work Functions of Li+ Ions and Electrons in the Battery Electrode Material LiCoO2: A Thermodynamic Cycle Combining Ionic and Electronic Structure (Adv. Energy Mater. 18/2018) 
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下载免费PDF全文 Stephan Schuld René Hausbrand Mathias Fingerle Wolfram Jaegermann Karl‐Michael Weitzel 《Liver Transplantation》2018,8(18)
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Puiki Leung Junfu Bu Pablo Quijano Velasco Matthew R. Roberts Nicole Grobert Patrick S. Grant 《Liver Transplantation》2019,9(39)
A symmetric solid‐state battery based on organic porous electrodes is fabricated using scalable spray‐printing. The active electrode material is based on a textile dye (disperse blue 134 anthraquinone) and is capable of forming divalent cations and anions in oxidation and reduction processes. The resulting molecule can be used in both negative and positive electrode reactions. After spray printing an inter‐connected pore honeycomb electrode, a solid‐state electrolyte (σLi: × 10?4 S cm?1) based on a polymeric ionic liquid is spray‐printed as a second layer and infiltrated through the porous electrodes. A symmetric all‐organic battery is then formed with the addition of another identical set of electrode and electrolyte layers. Both density functional theory calculations and charge‐discharge profiles show that the potentials for the negative and positive electrode reactions are amongst the lowest (≈2.0 V vs Li) and the highest (≈3.5 V vs Li), respectively, for quinone‐type molecules. Over the C‐rate range 0.2 to 5 C, the battery has a discharge cell voltage of more than 1 V even up to 250 charge‐discharge cycles and capacities are in the range 50–80 mA h g?1 at 0.5 C. 相似文献
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Naoaki Yabuuchi Ryo Hara Masataka Kajiyama Kei Kubota Toru Ishigaki Akinori Hoshikawa Shinichi Komaba 《Liver Transplantation》2014,4(13)
A new and promising P2‐type layered oxide, Na5/6[Li1/4Mn3/4]O2 is prepared using a solid‐state method. Detailed crystal structures of the sample are analyzed by synchrotron X‐ray diffraction combined with high‐resolution neutron diffraction. P2‐type Na5/6[Li1/4Mn3/4]O2 consists of two MeO2 layers with partial in‐plane √3a × √3a‐type Li/Mn ordering. Na/Li ion‐exchange in a molten salt results in a phase transition accompanied with glide of [Li1/4Mn3/4]O2 layers without the destruction of in‐plane cation ordering. P2‐type Na5/6[Li1/4Mn3/4]O2 translates into an O2‐type layered structure with staking faults as the result of ion‐exchange. Electrode performance of P2‐type Na5/6[Li1/4Mn3/4]O2 and O2‐type Lix[Li1/4Mn3/4]O2 is examined and compared in Na and Li cells, respectively. Both samples show large reversible capacity, ca. 200 mA h g?1, after charge to high voltage regardless of the difference in charge carriers. Structural analysis suggests that in‐plane structural rearrangements, presumably associated with partial oxygen loss, occur in both samples after charge to a high‐voltage region. Such structural activation process significantly influences electrode performance of the P2/O2‐type phases, similar to O3‐type Li2MnO3‐based materials. Crystal structures, phase‐transition mechanisms, and the possibility of the P2/O2‐type phases as high‐capacity and long‐cycle‐life electrode materials with the multi‐functionality for both rechargeable Li/Na batteries are discussed in detail. 相似文献
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Abhinav M. Gaikwad Brian V. Khau Greg Davies Benjamin Hertzberg Daniel A. Steingart Ana Claudia Arias 《Liver Transplantation》2015,5(3)
Early demonstrations of wearable devices have driven interest in flexible lithium‐ion batteries. Previous demonstrations of flexible lithium‐ion batteries trade off between low areal capacity, poor mechanical flexibility and/or high thickness of inactive components. Here, a reinforced electrode design is used to support the active layers of the battery and a freestanding carbon nanotube (CNT) layer is used as the current collector. The supported architecture helps to increase the areal capacity (mAh cm‐2) of the battery and improve the tensile strength and mechanical flexibility of the electrodes. Batteries based on lithium cobalt oxide and lithium titanate oxide shows excellent electrochemical and mechanical performance. The battery has an areal capacity of ≈1 mAh cm‐2 and a capacity retention of around 94% after cycling the battery for 450 cycles at a C/2 rate. The reinforced electrode has a tensile strength of ≈5.5–7.0 MPa and shows excellent capacity retention after repeatedly flexing to a bending radius ranging from 45 to 10 mm. The relationships between mechanical flexing, electrochemical performance, and mechanical integrity of the battery are studied using electrochemical cycling, electron microscopy, and electrochemical impedance spectroscopy (EIS). 相似文献
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Lithium‐Ion Batteries: Excellent Compatibility of Solvate Ionic Liquids with Sulfide Solid Electrolytes: Toward Favorable Ionic Contacts in Bulk‐Type All‐Solid‐State Lithium‐Ion Batteries (Adv. Energy Mater. 22/2015) 下载免费PDF全文
下载免费PDF全文 Dae Yang Oh Young Jin Nam Kern Ho Park Sung Hoo Jung Sung‐Ju Cho Yun Kyeong Kim Young‐Gi Lee Sang‐Young Lee Yoon Seok Jung 《Liver Transplantation》2015,5(22)
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Electrodes: Layered P2/O3 Intergrowth Cathode: Toward High Power Na‐Ion Batteries (Adv. Energy Mater. 17/2014) 下载免费PDF全文
下载免费PDF全文 Eungje Lee Jun Lu Yang Ren Xiangyi Luo Xiaoyi Zhang Jianguo Wen Dean Miller Aaron DeWahl Stephen Hackney Baris Key Donghan Kim Michael D. Slater Christopher S. Johnson 《Liver Transplantation》2014,4(17)
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Rechargeable ion batteries have contributed immensely to shaping the modern world and been seriously considered for the efficient storage and utilization of intermittent renewable energies. To fulfill their potential in the future market, superior battery performance of high capacity, great rate capability, and long lifespan is undoubtedly required. In the past decade, along with discovering new electrode materials, the focus has been shifting more and more toward rational electrode designs because the performance is intimately connected to the electrode architectures, particularly their designs at the nanoscale that can alleviate the reliance on the materials' intrinsic nature. The utilization of nanoarchitectured arrays in the design of electrodes has been proven to significantly improve the battery performance. A comprehensive summary of the structural features and fabrications of the nanoarchitectured array electrodes is provided, and some of the latest achievements in the area of both lithium‐ and sodium‐ion batteries are highlighted. Finally, future challenges and opportunities that would allow further development of such advanced electrode configuration are discussed. 相似文献
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