Article
Chemistry, Physical
Xudong Peng, Yanke Lin, Yu Wang, Yiju Li, Tianshou Zhao
Summary: The emerging localized high-concentration electrolytes (LHCEs) with small salt dosage, low viscosity, and favorable electrode wettability have triggered extensive research interest recently. In this study, an anode-compatible and high-voltage ether-based LHCE (BTF-LHCE) is proposed by introducing cost-efficient and lightweight benzotrifluoride (BTF) as a diluent. The BTF-LHCE system exhibits unique solvation structure and interfacial chemistry, leading to high Coulombic efficiency (CE) for both Si and metallic Li anodes. The Si||NCM622 and Li||NCM622 pouch cell assembled with BTF-LHCE show high cell-level specific energy densities, indicating the promising potential of the advanced ether-based electrolytes for high-voltage and high-specific-energy battery technologies.
Article
Chemistry, Multidisciplinary
Shiyang Wang, Kewei Wang, Yuchen Zhang, Yulin Jie, Xinpeng Li, Yuxue Pan, Xiaowen Gao, Qingshun Nian, Ruiguo Cao, Qi Li, Shuhong Jiao, Dongsheng Xu
Summary: In this study, a high-entropy electrolyte composed of LiOTf and TMP was added to Mg(TFSI)2/DME to significantly improve the electrochemical performance of Mg-metal anodes. The high-entropy solvation structure effectively reduced the formation of insulating components on the Mg-metal anode, promoting its electrochemical kinetics and cycling stability. This study provides new insights into the design of electrolytes for Mg-metal batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Hansen Wang, Zhiao Yu, Xian Kong, William Huang, Zewen Zhang, David G. Mackanic, Xinyi Huang, Jian Qin, Zhenan Bao, Yi Cui
Summary: Novel electrolyte designs, including fluorinated 1,6-dimethoxyhexane and 1,2-dimethoxyethane as solvent molecules, along with lithium bis(fluorosulfonyl)imide, enable high-performance lithium metal batteries with improved stability and ionic conductivity. The use of a dual-solvent system contributes to the anion-derived solid-electrolyte interphase and enhances the overall battery performance.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Peng Chen, Xiaohan Sun, Bernd Plietker, Michael Ruck
Summary: A newly developed electrolyte enables dendrite-free growth and efficient reaction in zinc ion hybrid capacitors, resulting in stable performance under different conditions.
Article
Nanoscience & Nanotechnology
Ran Attias, Ben Dlugatch, Omer Blumen, Keren Shwartsman, Michal Salama, Netanel Shpigel, Daniel Sharon
Summary: The design of electrolyte solutions is crucial for the development of rechargeable Mg batteries. Over the past two decades, several solutions for Mg metal anodes have been explored, contributing to a better understanding of deposition and stripping processes. However, the comparison of their reversible electrodeposition Coulombic efficiency (CE) remained unclear. This study rigorously measured the average CE of major electrolyte solutions and found that only one solution met the 99% CE benchmark during prolonged cycling procedures.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
David Hoang, Yaqiong Li, Min Soo Jung, Sean K. Sandstrom, Alexis M. Scida, Heng Jiang, Trenton C. Gallagher, Brenden A. Pollard, Rachel Jensen, Nan-Chieh Chiu, Kyriakos Stylianou, William F. Stickle, P. Alex Greaney, Xiulei Ji
Summary: This study presents a method to improve the reversibility of zinc metal anodes by adding a small concentration of vanillin to 30m ZnCl2 electrolyte, which eliminates dendrites, lowers acidity, and forms an effective solid electrolyte interphase. This improvement enables the zinc metal anode to operate with a high Coulombic efficiency and exhibit good cycle stability in a full cell.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Naiqing Ren, Lifeng Wang, Xiaodong He, Liming Zhang, Jiemin Dong, Fei Chen, Jingchao Xiao, Bicai Pan, Chunhua Chen
Summary: By introducing C-Cl bonds, the initial Coulombic efficiency of hard carbon anodes derived from biomass material can be significantly improved, reducing the formation of solid electrolyte interface films and enhancing the energy density of lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Yiwei Li, Shiming Chen, Shenyang Xu, Zijian Wang, Kai Yang, Jiangtao Hu, Bo Cao, Wenguang Zhao, Mingjian Zhang, Luyi Yang, Feng Pan
Summary: The use of NaCF3SO3 electrolyte salt has been found to significantly improve the initial Coulombic efficiency and reversible capacity of high-surface-area carbon anode, attributed to the reduced amount of NaxC and formation of a thinner SEI layer providing extra active sites for Na+ storage.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Ganyu Zheng, Qiaowei Lin, Jiabin Ma, Jun Zhang, Yan-Bing He, Xian Tang, Feiyu Kang, Wei Lv, Quan-Hong Yang
Summary: A fast chemical presodiation method using Na-Nt as a reagent was developed to improve the Coulombic efficiency and cycle stability of rGO anodes in SIBs, forming an artificial SEI layer on the surface. This method enables rapid interfacial ion transfer and high capacity retention over 1000 cycles, showing potential for practical applications in high-rate SIBs.
Review
Chemistry, Multidisciplinary
Shengchi Bai, Zhaodong Huang, Guojin Liang, Rui Yang, Di Liu, Wen Wen, Xu Jin, Chunyi Zhi, Xiaoqi Wang
Summary: Zn-ion batteries are considered as the most promising batteries for large-scale energy storage due to their low cost, high safety, and eco-friendly nature. The use of aqueous electrolytes poses challenges for the Zn anode, but electrolyte additives can effectively address these challenges.
Article
Chemistry, Multidisciplinary
Jing Xu, Wenli Lv, Wang Yang, Yang Jin, Qianzheng Jin, Bin Sun, Zili Zhang, Tianyi Wang, Linfeng Zheng, Xiaolong Shi, Bing Sun, Guoxiu Wang
Summary: The introduction of silk fibroin (SF) as an electrolyte additive for aqueous zinc-ion batteries can form a stable and self-healable protective film, which promotes homogeneous zinc deposition and suppresses parasitic reactions, leading to improved cycle life of the batteries.
Article
Engineering, Environmental
Hengtao Shen, Yongling An, Quanyan Man, Jingyan Wang, Chengkai Liu, Baojuan Xi, Shenglin Xiong, Jinkui Feng, Yitai Qian
Summary: In this work, controlled chemical prelithiation is used to improve the performance of two-dimensional siloxene nanosheet as an anode for lithium-ion batteries. The results show that a 15 min prelithiation process can achieve uniform SEI film and high coulombic efficiency, leading to enhanced performance of siloxene anode. The prelithiated siloxene anode exhibits high ICE, superior rate performance, and stable cycling performance, with an enhanced capacity retention of 94.3% when coupled with 5 V-class LiNi0.5Mn1.5O4 cathodes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xiaolong Zhu, Yan Wang, Wenya Wang, Kuan Wu, Ming Zhu, Guanyao Wang, Gang Xu, Minghong Wu, Hua-Kun Liu, Shi-Xue Dou, Chao Wu
Summary: This study reports a mixed-ion/electron-conducting interface (MIECI) layer that enables dendrite-free sodium plating/stripping in an ether-based electrolyte. The MIECI layer significantly improves the Coulombic efficiency and stability of sodium metal anodes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zhendong Li, Liyuan Huai, Shun Li, Mingming Ma, Kailin Luo, Yang Zhao, Deyu Wang, Xueliang Sun, Zhe Peng
Summary: By incorporating nickel (Ni) seeds in the bulk Li anode with tailored interfacial chemistry, this study demonstrates improved charge transfer dynamics and the formation of a customized electrolyte interface, enabling the development of high-energy-density lithium metal batteries (LMBs).
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Fan Li, Dingtao Ma, Kefeng Ouyang, Ming Yang, Jimin Qiu, Juan Feng, Yanyi Wang, Hongwei Mi, Shichang Sun, Lingna Sun, Chuanxin He, Peixin Zhang
Summary: Driven by theory calculations, a dual-interface strategy of surface texture engineering and passivation layer protection is developed to regulate the undesirable side reactions and deposition behavior of Zn metal anodes. This dual-interface enables the inhibition of side reactions, acceleration of de-solvation, homogenization of ion flux, and guided deposition orientation, resulting in significantly extended stability and improved reversibility of Zn electrodes. It can operate steadily for over 6600 hours and retain high reversibility even at higher current densities. Furthermore, it enhances the rate capability and cyclic stability in both aqueous and solid-state Zn metal batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Chao Tang, Yawei Chen, Zhengfeng Zhang, Wenqiang Li, Junhua Jian, Yulin Jie, Fanyang Huang, Yehu Han, Wanxia Li, Fuping Ai, Ruiguo Cao, Pengfei Yan, Yuhao Lu, Shuhong Jiao
Summary: Utilizing HTCN as an electrolyte additive, this study demonstrates a coordinating-based interphase-forming mechanism to stabilize high-voltage LiCoO2 cathodes, resulting in improved cycling performance of lithium-ion batteries. The stable interface formed by HTCN molecules coordinating with Co ions suppresses electrolyte decomposition and enhances the structural stability of LiCoO2 during cycling, leading to excellent long-term cycling performance.
Article
Chemistry, Multidisciplinary
Keming Song, Xiang Wang, Zhengkun Xie, Zhiwei Zhao, Zhe Fang, Zhengfeng Zhang, Jun Luo, Pengfei Yan, Zhangquan Peng, Weihua Chen
Summary: An ultrathin solid-electrolyte interphase (SEI) induced by Cu+-tailored double electrical layer (EDL) has been reported to suppress electrolyte consumption and enhance the cycling stability of CuS anode in sodium-ion batteries. The unique EDL with SO3CF3-Cu complex absorbing on CuS can be reduced to CuF2-rich SEI, which enables the formation of an ultrathin and stable SEI film, minimizing electrolyte consumption and reducing the activation energy of Na+ transport. The modified CuS electrode exhibits high capacity retention of 402.8 mAh g(-1) after 7000 cycles, providing important insights for high-stability electrode construction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Xuan Luo, Qingshun Nian, Zihong Wang, Bing-Qing Xiong, Shunqiang Chen, Yecheng Li, Xiaodi Ren
Summary: A seamless MOF-based interphase is constructed on the Zn surface via a vapor-solid reaction, which eliminates undesired electrolyte diffusion and promotes uniform Zn deposition with high efficiency. This strategy addresses the challenges of dendrite growth and side reactions, and shows promise for practical application of aqueous zinc batteries in large-scale energy storage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Youbing Li, Shuairu Zhu, Erxiao Wu, Haoming Ding, Jun Lu, Xulin Mu, Lu Chen, Yiming Zhang, Justinas Palisaitis, Ke Chen, Mian Li, Pengfei Yan, Per O. a. Persson, Lars Hultman, Per Eklund, Shiyu Du, Yongbo Kuang, Zhifang Chai, Qing Huang
Summary: Researchers have designed a new Ta2CoC@Ta(2)CTx core-shell structure that exhibits excellent catalytic performance in alkaline electrolyte environments, making it suitable for electrocatalytic hydrogen and oxygen production. This study provides a new strategy for designing multifunctional electrocatalysts and paves the way for the development of MAX phase-based materials in clean energy applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Li Chen, Qingshun Nian, Digen Ruan, Jiajia Fan, Yecheng Li, Shunqiang Chen, Lijiang Tan, Xuan Luo, Zhuangzhuang Cui, Yifeng Cheng, Changhao Li, Xiaodi Ren
Summary: This study presents a safe and high-performance electrolyte formulation for high-voltage lithium-ion batteries (LIBs) using flame-retarding ethoxy(pentafluoro) cyclotriphosphazene (PFPN) as a non-solvating diluent. The addition of PFPN significantly increases the electrolyte flash point and protects the anion-rich solvation sheath, preventing solvent co-intercalation and structural damage to the graphite anode. The resulting nonflammable electrolyte also forms a stable cathode electrolyte interphase (CEI), enabling excellent electrochemical performances of the LIBs at high voltages and high temperatures.
Article
Chemistry, Multidisciplinary
Youngseong Jo, Dahee Jin, Minhong Lim, Hyuntae Lee, Hyeongguk An, Jiyeon Seo, Gunyoung Kim, Xiaodi Ren, Yong Min Lee, Hongkyung Lee
Summary: This study reveals the structural and chemical evolutions of the reacted Li layer during cycling and investigates its detrimental effects on cycling stability. The use of a lean electrolyte leads to fast depletion of salt anions, while increasing the salt-solvent complex and reducing non-solvating diluent can prolong cycling life.
Article
Chemistry, Physical
Bing-Qing Xiong, Qingshun Nian, Xin Zhao, Yawei Chen, Yecheng Li, Jinyu Jiang, Shuhong Jiao, Xiaowen Zhan, Xiaodi Ren
Summary: The interface chemistry of garnet-based solid-state electrolytes is transformed by impregnating them with polyphosphoric acid, resulting in improved stability and current density for solid-state batteries.
ACS ENERGY LETTERS
(2023)
Review
Chemistry, Physical
Zhuangzhuang Cui, Xiao Li, Xiaoyu Bai, Xiaodi Ren, Xing Ou
Summary: This review thoroughly discusses the issues and challenges of Ni-rich layered oxides, analyzes different mechanisms of elemental doping, and compares the characteristics of doping elements in different valence states. It also provides perspectives on key doping principles and future cathode designs. This review offers an exhaustive summary of cathode doping strategies and provides a fundamental understanding of doping modification for Ni-rich materials.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kuan Wang, Zhengfeng Zhang, Yang Ding, Sulan Cheng, Biwei Xiao, Manling Sui, Pengfei Yan
Summary: This study reveals the correlation between surface facet and surface stability of layered cathodes. It demonstrates that certain surface facets are more resistant to mechanical cracking and chemical corrosion, which is beneficial for high-performance rechargeable batteries. This finding deepens the understanding of the mechanism behind surface stability and suggests that surface facet regulation can optimize battery materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chenchen Wang, Kuan Wang, Meng Ren, Yaohui Huang, Kai Zhang, Changzhong Liao, Kaimin Shih, Pengfei Yan, Fujun Li
Summary: Layered transition-metal oxides are potential cathode materials for sodium-ion batteries, but the formation of inferior interface and particulate fracture during the sodiation/desodiation process leads to structure degradation and poor stability. This study reveals the interface chemistry of P2-Na0.640Ni0.343Mn0.657O2 in a 1.0 mol/L NaPF6 in diglyme electrolyte, enabling highly reversible Na extraction and intercalation. The formed cathode-electrolyte interphase layer, consisting of NaF and CO-rich compounds, exhibits high mechanical strength and ionic conductivity, providing a stable structure for Na+ transport and redox reactions. This investigation emphasizes the importance of cathode interphase chemistry in sodium-ion batteries.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Yang Liu, Yawei Chen, Xulin Mu, Zhongyi Wu, Xu Jin, Jianming Li, Yanzhi Xu, Li Yang, Xiaoke Xi, Haeseong Jang, Zhanwu Lei, Qinghua Liu, Shuhong Jiao, Pengfei Yan, Xiyu Li, Ruiguo Cao
Summary: This study reports an acidic oxygen evolution reaction (OER) catalyst in which atomically dispersed iridium atoms are incorporated into a spinel Co3O4 lattice. This catalyst exhibits excellent activity and stability for water oxidation, significantly reducing the over-potential at 10 mA cm-2 and achieving a high turnover frequency value. Additionally, the catalyst shows superior corrosion resistance and a lifespan of up to 500 hours. First-principles calculations reveal the key role of lattice oxygen in stabilizing the *OOH intermediate and regulating the rate-limiting step of the OER process.
Article
Chemistry, Applied
Zhengfeng Zhang, Changdong Qin, Kuan Wang, Xiao Han, Jinhui Li, Manling Sui, Pengfei Yan
Summary: The cathode electrolyte interphase (CEI) layer is crucial for the electrochemical performance of lithium-ion batteries. By employing diverse characterization techniques, we systematically investigate the dynamic evolution of the CEI layer and its critical impact on the cycling performance of LiCoO2 cathode. We find that cycling voltage plays a key role in CEI formation and evolution, and a critical potential of 4.05 V is identified as the switching point between CEI deposition and decomposition.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Applied
Zhuangzhuang Cui, Shunqiang Chen, Qingshun Nian, Yecheng Li, Yawei Chen, Bing-Qing Xiong, Zihong Wang, Zixu He, Shuhong Jiao, Xiaodi Ren
Summary: Ethers show excellent reduction stability and have great potential as electrolyte solvents for secondary Li metal batteries. However, their oxidation stability has mainly relied on high concentration approaches, and effective interphase construction to protect the cathode from electrolyte corrosion has made limited progress. In this study, a semi-crystalline interfacial layer was constructed on the surface of the Li(Ni0.8Co0.1Mn0.1)O2 cathode, which improved the electrochemical stability in the corrosive environment formed by ether molecule decomposition. The optimized semi-crystalline layer with low modulus and high ionic conductivity effectively relieved electrode strain and maintained the integrity of the interface layer. As a result, the continuous oxidation decomposition of ether-based electrolytes was significantly suppressed, leading to outstanding cycling stability of the battery (84% capacity retention after 300 cycles). This article provides a solution to address the oxidation instability issue of ether-based electrolytes.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Digen Ruan, Lijiang Tan, Shunqiang Chen, Jiajia Fan, Qingshun Nian, Li Chen, Zihong Wang, Xiaodi Ren
Summary: This study investigates the effect of solvent structure on interfacial reactivity and discovers the profound solvent chemistry of designed monofluoro-ether in anion-enriched solvation structures. The research demonstrates the essential role of monofluoro-ether solvent chemistry in tailoring highly protective and conductive interphases, resulting in improved stability and efficiency of Li-metal batteries. This work provides fundamental insights into the rational design of electrolytes for future high-energy batteries.
Article
Chemistry, Physical
Jun Yang, Xing Li, Ke Qu, Yixian Wang, Kangqi Shen, Changhuan Jiang, Bo Yu, Pan Luo, Zhuangzhi Li, Mingyang Chen, Bingshu Guo, Mingshan Wang, Junchen Chen, Zhiyuan Ma, Yun Huang, Zhenzhong Yang, Pengcheng Liu, Rong Huang, Xiaodi Ren, David Mitlin
Summary: A new concentrated ternary salt ether-based electrolyte called CETHER-3 enables stable cycling of lithium metal battery cells. This electrolyte exhibits enhanced performance in terms of high-voltage cycling stability due to the improved coordination between Li+ and the solvent/salt molecules. In addition, a thinner and more stable cathode electrolyte interphase (CEI) and solid electrolyte interphase (SEI) are formed, which suppress the deleterious transformation of the cathode structure and the growth of lithium metal dendrites.
