Advanced Energy Materials

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  1. Molecular Engineering Using an Anthanthrone Dye for Low-Cost Hole Transport Materials: A Strategy for Dopant-Free, High-Efficiency, and Stable Perovskite Solar Cells

    Hong Duc Pham, Thu Trang Do, Jinhyun Kim, Cecile Charbonneau, Sergei Manzhos, Krishna Feron, Wing Chung Tsoi, James R. Durrant, Sagar M. Jain and Prashant Sonar

    Version of Record online: 19 FEB 2018 | DOI: 10.1002/aenm.201703007

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    First time low-cost anthanthrone dye based hole transporting materials (HTMs) 4,10-bis(1,2-dihydroacenaphthylen-5-yl)-6,12-bis(octyloxy)-6,12-dihydronaphtho[7,8,1,2,3-nopqr]tetraphene (ACE-ANT-ACE) and 4,4′-(6,12-bis(octyloxy)-6,12-dihydronaphtho[7,8,1,2,3-nopqr]tetraphene-4,10-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) (TPA-ANT-TPA) end capped with dihydroacenaphthylene and triphenyleamine groups are designed and synthesized, respectively. Among both, dopant-free TPA-ANT-TPA cut-rate HTM ($67 g−1) exhibits higher performance with 17.5% efficiency and retains respectable performance after 50 h in 58% relative humidity than conventional expensive 2,2′,7,7′-tetrakis(N,N′-di-p-methoxyphenylamino)-9,9′-spirbiuorene.

  2. Advances in Carbon Nanotube–Silicon Heterojunction Solar Cells

    Daniel D. Tune and Benjamin S. Flavel

    Version of Record online: 19 FEB 2018 | DOI: 10.1002/aenm.201703241

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    The significant progress that has been made in improving the performance and stability of carbon nanotube–silicon heterojunction solar cells, and in understanding of the operating principles, is discussed. In addition, a comprehensive review of the literature, a roadmap for future performance improvement, and a critical assessment of the opportunities for this rapidly developing field in the wider context of the silicon photovoltaics industry are provided.

  3. Advanced Characterization Techniques for Sodium-Ion Battery Studies

    Zulipiya Shadike, Enyue Zhao, Yong-Ning Zhou, Xiqian Yu, Yong Yang, Enyuan Hu, Seongmin Bak, Lin Gu and Xiao-Qing Yang

    Version of Record online: 19 FEB 2018 | DOI: 10.1002/aenm.201702588

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    Advanced characterization techniques are applied for a fundamental investigation of sodium-ion batteries (NIBs) from different perspectives at various dimensions and scales during an electrochemical process. By summarizing the comprehensive overview of both static (ex situ) and real-time (in situ or in operando) techniques, it is hoped that this review is helpful for scientists in the research field of NIBs.

  4. Solid-State Sodium Batteries

    Chenglong Zhao, Lilu Liu, Xingguo Qi, Yaxiang Lu, Feixiang Wu, Junmei Zhao, Yan Yu, Yong-Sheng Hu and Liquan Chen

    Version of Record online: 19 FEB 2018 | DOI: 10.1002/aenm.201703012

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    The booming solid-state sodium batteries, based on solid-state electrolytes (SSEs), have the promise to be potential alternatives to organic liquid systems due to their improved safety and higher energy density. Recent progress in SSEs, including solid polymer electrolytes, composite polymer electrolytes, inorganic solid electrolytes, etc. and their potential application in solid-state batteries, are reviewed.

  5. Germanium Thin Film Protected Lithium Aluminum Germanium Phosphate for Solid-State Li Batteries

    Yijie Liu, Chao Li, Bojie Li, Hucheng Song, Zhu Cheng, Minrui Chen, Ping He and Haoshen Zhou

    Version of Record online: 19 FEB 2018 | DOI: 10.1002/aenm.201702374

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    Na+ superionic conductor-type solid electrolyte LAGP (Li1.5Al0.5Ge0.5P3O12) shows favorable conductivity as well as good mechanical strength to prevent Li dendrite penetration. However, the instability of LAGP with Li metal remains a great challenge. An amorphous Ge thin film is sputtered on an LAGP surface to suppress side reactions and produce an intimate contact between Li anode and LAGP.