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Batteries for electric vehicles: Technical advancements, environmental challenges, and market perspectives 电动汽车电池：技术进步、环境挑战和市场前景

SusMat Pub Date : 2024-08-26 DOI: 10.1002/sus2.234

Axel Celadon, Huaihu Sun, Shuhui Sun, Gaixia Zhang

引用次数: 0

A self-powered system to electrochemically generate ammonia driven by palladium single atom electrocatalyst 由钯单原子电催化剂驱动的电化学生成氨的自供电系统

SusMat Pub Date : 2024-08-21 DOI: 10.1002/sus2.237

Hao Hu, Shuyuan Pan, Zhiyong Ma, Kaiyi Liu, Yi Li, Haifeng Bao, Chengwei Deng, Fang Luo, Zehui Yang

{"title":"A self-powered system to electrochemically generate ammonia driven by palladium single atom electrocatalyst","authors":"Hao Hu, Shuyuan Pan, Zhiyong Ma, Kaiyi Liu, Yi Li, Haifeng Bao, Chengwei Deng, Fang Luo, Zehui Yang","doi":"10.1002/sus2.237","DOIUrl":"https://doi.org/10.1002/sus2.237","url":null,"abstract":"The utilization of single atoms (SAs) as trifunctional electrocatalyst for nitrogen reduction, oxygen reduction, and oxygen evolution reactions (NRR, ORR, and OER) is still a formidable challenge. Herein, we devise one-pot synthesized palladium SAs stabilized on nitrogen-doped carbon palladium SA electrocatalyst (Pd-SA/NC) as efficient trifunctional electrocatalyst for NRR, ORR, and OER. Pd-SA/NC performs a robust catalytic activity toward NRR with faradaic efficiency of 22.5% at −0.25 V versus reversible hydrogen electrode (RHE), and the relative Pd utilization efficiency is enhanced by 17-fold than Pd-NP/NC. In addition, the half-wave potential reaches 0.876 V versus RHE, amounting to a 58-time higher mass activity than commercial Pt/C. Moreover, the overpotential at 10 mA cm−2 is as low as 287 mV for Pd-SA/NC, outperforming the commercial IrO2 by 360 times in turnover frequency at 1.6 V versus RHE. Accordingly, the assembled rechargeable zinc-air battery (ZAB) achieves a maximum power density of 170 mW cm−2, boosted by 2.3 times than Pt/C–IrO2. Two constructed ZABs efficiently power the NRR-OER system to electrochemically generate ammonia implying its superior trifunctionality.","PeriodicalId":520230,"journal":{"name":"SusMat","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142317819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrogen bond producers in powerful protic ionic liquids for enhancing dissolution of natural cellulose 用于提高天然纤维素溶解度的强力原生离子液体中的氢键生成器

SusMat Pub Date : 2024-08-20 DOI: 10.1002/sus2.238

Shi-Peng Chen, Dan-Yang Zhao, Jin-Long Zhu, Jing Wang, Gan-Ji Zhong, Hua-Dong Huang, Zhong-Ming Li

{"title":"Hydrogen bond producers in powerful protic ionic liquids for enhancing dissolution of natural cellulose","authors":"Shi-Peng Chen, Dan-Yang Zhao, Jin-Long Zhu, Jing Wang, Gan-Ji Zhong, Hua-Dong Huang, Zhong-Ming Li","doi":"10.1002/sus2.238","DOIUrl":"https://doi.org/10.1002/sus2.238","url":null,"abstract":"The manipulation of hydrogen bonding within protic ionic liquids is conducive to conquering the robust hydrogen bonding interactions in cellulose for its effective dissolution, but it is a great challenge to establish the delicate balance of hydrogen bonding network between solvent and cellulose. Herein, we proposed the concept of “hydrogen bond producers” for urea molecules in 1,1,3,3-tetramethylguanidinium methoxyacetate acid ([TMGH][MAA]) to enhance the dissolution of cellulose. The optimization of physicochemical properties for [TMGH][MAA] solvent as a function of urea concentration revealed a remarkable increase in cellulose solubility from 13% to 17% (w/w) by adding only 0.25 wt% urea, highlighting the efficiency of [TMGH][MAA] as a powerful solvent for the dissolution of cellulose. The experimental and simulation results verified that the significant improvement on dissolution of cellulose was attributed to the hydrogen bonding interaction of urea molecules with ion pairs and part of free ions, reducing the interference with the active ions bonded to cellulose. Furthermore, the considerable enhancement on comprehensive properties of regenerated cellulose films demonstrated the effectiveness of [TMGH][MAA]/urea solvent. The concept of “hydrogen bond producers” presented here opens a new avenue for significantly enhancing the dissolution of natural cellulose, promoting the sustainable development in large-scale processing of cellulose.","PeriodicalId":520230,"journal":{"name":"SusMat","volume":"191 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142317820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0