Publications

(# equal contribution; * corresponding)

[1] Rui Lin,# Changming Ke,# Juner Chen, Shi Liu,* Jianhui Wang,* Asymmetric donor-acceptor molecule regulated core-shell-solvation electrolyte for high-voltage aqueous batteries, Joule 6 (2022) 399-417. Doi: xxx [PDF][Link]

Ÿ China Science Daily 中国科学报: 发现“关键配方”，水系电池有望匹敌锂电池

Ÿ University News: 师徒三年磨一剑，西湖大学水系电池研究取得重要进展

Three Year's Perseverance Spells Success

Ÿ Other social media: 西湖大学最新Joule：可以在空气中组装的高电压电池！

西湖大学Joule：不对称供体-受体分子调控水系电解液，电压窗口4. 5 V

Asymmetric donor-acceptor molecules such as methylurea (MU) can regulate the hydrogen-bonding network of aqueous electrolyte to form a peculiar nanoscale core-shell-like solvation structure, which not only breaks the physical restriction of limited lithium salt solubility in water but also effectively suppresses hydrogen evolution at low potentials toward 0.5 V versus Li+/Li. This simple approach truly inherits the high safety of aqueous electrolytes and substantially expands the electrochemical stability window without compromising its cost-effective property. [设计新型核壳溶液结构全阻燃水系电解液，在空气中组装高电压锂离子电池]

[2] Mingming Fang,# Juner Chen,# Boyang Chen, Jianhui Wang,* Salt-solvent synchro-constructed robust electrolyte-electrode interphase for high-voltage lithium metal batteries, Journal of Materials Chemistry A, 2022, DOI: 10.1039/D2TA02267B [Selected as 2022 Emerging Investigators Themed Issue] [PDF][Link]

A simple electrolyte formula of “single salt single solvent” — 1 M LiDFOB in ES — enables the stable operation of an NCM622|Li full cell (2.5 mA h cm−2, N/P = 4) under harsh conditions of high voltage (4.6 V) and wide temperature range (−30 to 60 °C). [设计低浓度"单一溶质/单一溶剂"高电压电解液，实现NCM622/Li锂金属电池在3~4.6V、-30~+60 °C条件下稳定工作]

[3] Jingjing Huang,# Zhe Chen,# Jinmeng Cai, Tao Wang,* Jianhui Wang,* Activating copper oxide for stable electrocatalytic ammonia oxidation reaction via in-situ introducing oxygen vacancies, Nano Research, 2022, doi:10.1007/s12274-022-4279-5 [PDF][Link]

In-situ electrochemically introducing oxygen vacancies (Vo) not only turns the inactive CuO into efficient electrocatalytic ammonia oxidation reaction (EAOR) catalyst but also achieves a high stability of over 400 h at a high current density of ~ 200 mA cm−2. The presence of Vo on the CuO surface induces a remarkable upshift of the d-band center of active Cu site closer to the Fermi level, which significantly stabilizes the reaction intermediates (*NHx) and efficiently oxidizes NH3 into N2. [通过原位引入氧空位来激活惰性的CuO，获得了迄今最稳定的电催化氧化氨催化剂]

[4] Jianhui Wang,# Qifeng Zheng,# Mingming Fang,# Seongjae Ko, Yuki Yamada, Atsuo Yamada,* Concentrated electrolytes widen the operating temperature range of lithium-ion batteries, Advanced Science 8 (2021) 2101646. Doi: xxx [PDF][Link]

Salt-concentrated electrolytes can overcome various challenges for lithium-ion full cells that operate in a wide temperature range from -20 to 100 °C. This achievement contributes to building a novel power battery pack that requires no thermal management system and deliveries greatly enhanced systematic energy densities in both gravimetry and volumetry. [实现-20 ~ +100 °C宽温锂离子全电池，构想无热管理系统的动力电池]

[5] Yuki Yamada,# Jianhui Wang,# Seongjae Ko, Eriko Watanabe, Atsuo Yamada,* Advances and issues in developing salt-concentrated battery electrolytes, Nature Energy 4 (2019) 269-280. Doi:xxx [PDF][Link]

[6] Jianhui Wang, Yuki Yamada, Keitaro Sodeyama, Eriko Watanabe, Koji Takada, Yoshitaka Tateyama, Atsuo Yamada*, Fire-extinguishing organic electrolytes for safe batteries, Nature Energy 3 (2018), 22-29. Doi:xxx [PDF][Link]

Ÿ 日本経済新聞、読売新聞、JFS: Japanese Researchers Develop Flame-Retardant Electrolyte for Safer Batteries [link: https://www.japanfs.org/en/news/archives/news_id036038.html]

MEXT: Fire-Extinguishing Organic Electrolytes for Secondary Batteries [link: https://elements-strategy.jp/en/digest/p45]

化学者のつぶやき -Chem-Station-: リチウムイオンに係る消火剤電解液のはなし [Link: https://www.chem-station.com/blog/2018/01/fire-extinguishing.html]

Ÿ 英国Chemistry World: Batteries made safer with fire-extinguishing electrolytes [link: https://www.chemistryworld.com/news/batteries-made-safer-with-fire-extinguishing-electrolytes-/3008364.article]

Ÿ 澳大利亚 Science Alert: Scientists Have Worked Out How to Build Fire Extinguishers Into Batteries [link: https://www.sciencealert.com/scientists-put-fire-extinguishers-into-lithium-ion-batteries]

Ÿ 俄罗斯Naked Science: Разработан аккумулятор со «встроенным огнетушителем» [link: https://naked-science.ru/article/sci/razrabotan-akkumulyator-so-vstroennym]

Ÿ 中国新华社：日本研发出防火防爆锂电池 [link: https://www.sohu.com/a/207685409_343161]

香港创新科技署：Battery with built-in "fire extinguisher" [link: https://www.itc.gov.hk/enewsletter/180301/en/battery_with_built_in_fire_extinguisher.html]

Severe safety concerns are impeding the large-scale employment of lithium/sodium batteries. Conventional electrolytes are highly flammable and volatile, which may cause catastrophic fires or explosions. Efforts to introduce flame-retardant solvents into the electrolytes have generally resulted in compromised battery performance because those solvents do not suitably passivate carbonaceous anodes. Here we report a salt-concentrated electrolyte design to resolve this dilemma, achieving long-term cycling Li-, Na-ion batteries with better safety. [设计灭火有机电解液，实现安全长寿锂/钠离子电池]

[7] Jianhui Wang, Yuki Yamada, Keitaro Sodeyama, Ching Hua Chiang, Yoshitaka Tateyama, Atsuo Yamada*, Superconcentrated electrolytes for a high-voltage lithium-ion Battery, Nature Communications 7 (2016), 12032. Doi: xxx [PDF][Link]

Ÿ Phys.org, TechXplore: High-voltage lithium-ion battery realized with superconcentrated electrolyte [link: https://techxplore.com/news/2016-07-high-voltage-lithium-ion-battery-superconcentrated-electrolyte.html]

Ÿ New Electronics: Better capacity in high voltage lithium-ion batteries [link: https://www.newelectronics.co.uk/content/news/better-capacity-in-high-voltage-lithium-ion-batteries]

Ÿ Other social media: 超高浓度电解质体系铸就高电压锂离子电池 [link: http://www.cailiaoniu.com/27961.html]

中国科学家在新高压锂电池技术上取得突破[link: https://www.sohu.com/a/110159654_354973]

Electrode degradation due to metal-ion dissolution in conventional electrolyte hampers the performance of 5 V-class Li-ion batteries. Here, we report a Simple mixing of a lithium salt and a solvent at super-high concentration leads to the formation of a three-dimensional network of solution structure. Without any additives, this new class of superconcentrated electrolytes overcome the long-standing challenge of metal ion dissolution at high voltages, and thus, realize a stable and high-rate 5 V-class LiNi0.5Mn1.5O4 | graphite battery. [设计首例“单一溶质单一溶剂”的高电压锂离子电解液，实现5V级电池]

[8] Jianhui Wang, Tao Liu, GuotaoWu, Wen Li, Yongfeng Liu, C. Moyses Araujo, Ralph H. Scheicher, Andres Blomqvist, Rajeev Ahuja, Zhitao Xiong, Ping Yang, Mingxia Gao, Hongge Pan, Ping Chen*, Ein Kalium-modifiziertes Mg(NH2)2-2LiH-System für die Wasserstoffspeicherung, Angewandte Chemie, 121 (2009), 5942-5946; Potassium-Modified Mg(NH2)2/2LiH System for Hydrogen Storage, Angewandte Chemie-International Edition, 48 (2009), 5828-5832. Doi: xxx [PDF][Link]

Using KH as an additive to Mg(NH2)2/LiH drastically improves hydrogen desorption, which begins at ca. 80 °C. Circa 5 wt% of hydrogen can be reversibly desorbed and absorbed at about 107 °C. The presence of potassium in the reacting system weakens the amide N—H and imide Li—N bonds, leading to enhanced reaction kinetics. [首次研发了一种高效的非过渡金属储氢催化剂──钾，在107 °C附近可逆吸放氢~5wt%]

[9] Jianhui Wang, Ping Chen*, Hongge Pan, Zhitao Xiong, Mingxia Gao, Guotao Wu, Chu Liang, Cao Li, Jieru Wang, Solid-solid heterogeneous catalysis: The role of potassium in promoting the dehydrogenation of the Mg(NH2)2/2LiH composite, ChemSusChem, 6 (2013), 2181-2189. [PDF][Link]

Potassium is in the loop: The introduction of potassium to the Mg(NH2)2/2 LiH composite evolves intermediates of K2Mg(NH2)4, Li3K(NH2)4, and KH, which circularly transform between each other to create a more energy-favorable pathway for dehydrogenation, and thus contributes to the overall kinetic enhancement. [揭示了钾的催化放氢机制，不同于常规过渡金属催化机理，为设计高效储氢催化剂提供了一种新思路]

[10] Jianhui Wang*, Haiwen Li*, Ping Chen*, Amides and borohydrides for high-capacity solid-state hydrogen storage — materials design and kinetic improvements, MRS Bulletin, 38 (2013), 480-487. [PDF][Link]

[11] Jianhui Wang, Jianjiang Hu, Yongfeng Liu, Zhitao Xiong, Guotao Wu, Hongge Pan, Ping Chen*, Effects of triphenyl phosphate on the hydrogen storage performance of the Mg(NH2)2-2LiH system, Journal of Materials Chemistry, 19 (2009), 2141-2146. [PDF][Link]

With the introduction of a small amount of triphenyl phosphate (TPP), Mg(NH2)2 keeps amorphous state during hydrogen sorption operation. Though the TPP-doped sample shows a faster reaction kinetics, the systematic equilibrium hydrogen pressure decreases as compared to the crystalline sample, which is likely due to the decrease of entropy change of Mg(NH2)2 in the system. [基于材料固态熵变化，构想了一种调变储氢材料热力学性能的新途径]

[12] Jingjing Huang, Jinmeng Cai, Jianhui Wang,* Nanostructured Wire-in-Plate Electrocatalyst for High-Durability Production of Hydrogen and Nitrogen from Alkaline Ammonia Solution, ACS Applied Energy Materials 3 (2020) 4108-4113. Doi: xxx [PDF][Link]

[13] Koji Takada, Yuki Yamada, Eriko Watanabe, Jianhui Wang, Keitaro Sodeyama, Yoshitaka Tateyama, Kazuhisa Hirata, Takeo Kawase, and Atsuo Yamada*, Unusual passivation ability of superconcentrated electrolytes toward hard carbon negative electrode in sodium-ion batteries, ACS Applied Materials & Interfaces, 9 (2017), 33802-33809.

[14] Yuki Yamada, Ching Hua Chiang, Keitaro Sodeyama, Jianhui Wang, Yoshitaka Tateyama, Atsuo Yamada*, Corrosion Prevention Mechanism of Aluminum Metal in Superconcentrated Electrolytes, ChemElectroChem, 2 (2015), 1687-1694.

[15] Huai-Jun Lin*, Hai-Wen Li, Biswajit Paik, Jianhui Wang and Etsuo Akiba, Improvement of hydrogen storage property of three-component Mg(NH2)2-LiNH2-LiH compositions by additives, Dalton Transactions, 45 (2016), 15374-15381.

[16] Biswajit Paik, Hai-Wen Li*, Jianhui Wang, Etsuo Akiba, A Li-Mg-N-H composite as H2 storage material: a case study with Mg(NH2)2-4LiH-LiNH2, Chemical Communication, 51 (2015), 10018-10021.

[17] Hujun Cao, Jianhui Wang, Yongshen Chua, Han Wang, Guotao Wu, Zhitao Xiong, Jieshan Qiu, Ping Chen*, NH3 Mediated or Ion Migration Reaction: The Case Study on Halide-Amide System, Journal of Physical Chemistry C, 118 (2014), 2344-2349.

[18] Hujun Cao, Yao Zhang, Jianhui Wang, Zhitao Xiong, Guotao Wu, Jieshan Qiu, Ping Chen*, Effects of Al-based additives on the hydrogen storage performance of the Mg(NH2)2-2LiH system, Dalton Transactions, 42 (2013), 5524-5531.

[19] Hujun Cao, Yao Zhang, Jianhui Wang, Zhitao Xiong, Guotao Wu, Ping Chen*, Materials design and modification on amide-based composites for hydrogen storage, Progress in Natural Science: Materials International, 22 (2012), 550-560.

[20] Jianhui Wang, Guotao Wu, Yongshen Chua, Jianping Guo, Zhitao Xiong, Yao Zhang, Mingxia Gao, Hongge Pan, Ping Chen*, Hydrogen sorption from the Mg(NH2)2-KH system and synthesis of an amide-imide complex of KMg(NH)(NH2), ChemSusChem, 4 (2011), 1622-1628.

[21] Yanjing Yang, Mingxia Gao*, Yongfeng Liu, Jianhui Wang, Jian Gu, Hongge Pan, Zhengxiao Guo, Multi-hydride systems with enhanced hydrogen storage properties derived from Mg(BH4)2 and LiAlH4, International Journal of Hydrogen Energy, 37 (2012), 10733-10742.

[22] Yongfeng Liu, Kai Zhong, Mingxia Gao, Jianhui Wang, Hongge Pan*, Qidong Wang, Hydrogen storage in a LiNH2-MgH2 (1:1) system, Chemistry of Materials, 20 (2008), 3521-3527.

[23] Renbo Lin, Yongfeng Liu, Mingxia Gao, Jianhui Wang, Hongwei Ge, Hongge Pan*, Investigation on performances of the novel ammonia-based hydrogen storage material CaCl2, Journal of Inorganic Materials, 23 (2008), 1059-1063.

[24] Kai Zhong, Yongfeng Liu, Mingxia Gao, Jianhui Wang, He Miao, Hongge Pan*, Electrochemical kinetic performance of V-Ti-based hydrogen storage alloy electrode with different particle sizes, International Journal of Hydrogen Energy, 33 (2008), 149-155.

[25] He Miao, Mingxia Gao, Yongfeng Liu, Yan Lin, Jianhui Wang, Hongge Pan*, Microstructure and electrochemical properties of Ti-V-based multiphase hydrogen storage electrode alloys Ti0.8Zr0.2V2.7Mn0.5Cr0.8-xNi1.25Fex (x=0.0-0.8), International Journal of Hydrogen Energy, 32 (2007), 3947-3953.

[26] He Miao, Mingxia Gao, Yongfeng Liu, Yan Lin, Jianhui Wang, Hongge Pan*, Effects of Y substitution for Ti on the microstructure and electrochemical properties of Ti-V-Fe-based hydrogen storage alloys, Journal of the Electrochemical Society, 154(2007), A1010-A1014.

[27] Jianhui Wang, Hongge Pan*, Rui Li, Kai Zhong, Mingxia Gao, The effect of particle size on the electrode performance of Ti-V-based hydrogen storage alloys, International Journal of Hydrogen Energy, 32 (2007), 3381-3386.

[28] Jianhui Wang, Kai Zhong, Hui Ding, Rui Li, Mingxia Gao, Hongge Pan*, Structure and electrochemical properties of La-Mg-Ni system hydrogen storage alloys with different Co contents, Transactions of Nonferrous Metals Society of China, 15 (2005), 1351-1355.