Itsinda ry’ubushakashatsi riyobowe na Prof. CHEN Wei muri kaminuza y’ubumenyi n’ikoranabuhanga mu Bushinwa (USTC) ryashyizeho uburyo bushya bwa batiri y’imiti ikoresha gaze ya hydrogène nka anode. Ubushakashatsi bwatangajwe muriAngewandte Chemie Edition Edition.
Hydrogen (H.2) imaze kwitabwaho nk'ingufu zihamye kandi zihendutse zitwara ingufu zishobora kongera ingufu kubera amashanyarazi meza. Nyamara, bateri gakondo ya hydrogène ishingiye cyane cyane ikoresha H.2nka cathode, igabanya ingufu za voltage kugera kuri 0.8-1.4 V kandi ikagabanya ubushobozi bwabo bwo kubika ingufu muri rusange. Kugira ngo batsinde imbogamizi, itsinda ry’ubushakashatsi ryasabye uburyo bushya: gukoresha H.2nka anode kugirango izamure cyane ingufu zingana na voltage ikora. Iyo uhujwe nicyuma cya lithium nka anode, bateri yerekanaga imikorere idasanzwe yamashanyarazi.
Igishushanyo cya batiri ya Li - H. (Ishusho ya USTC)
Abashakashatsi bakoze sisitemu ya batiri ya Li-H ya prototype, irimo anode ya lithium, anode ya platine ikozwe na platine ikora nka hydrogen cathode, na electrolyte ikomeye (Li1.3Al0.3Ti1.7(PO4)3, cyangwa LATP). Iboneza ryemerera gutwara lithium ion neza mugihe hagabanijwe imiti itifuzwa. Binyuze mu igeragezwa, bateri ya Li-H yerekanaga ingufu zingana na 2825 Wh / kg, ikomeza imbaraga zihoraho za 3V. Byongeye kandi, byageze ku ntera ishimishije yo kuzenguruka ingendo (RTE) ya 99.7%, byerekana gutakaza ingufu nkeya mugihe cyo kwishyuza no gusohora, mugihe bikomeje umutekano muremure.
Kugirango turusheho kunoza imikorere-yumutekano, umutekano no gukora ubworoherane, itsinda ryateje bateri ya Li-H idafite anode ikuraho ibyuma bya lithium yabanje gushyirwaho. Ahubwo, bateri ibika lithium mumunyu wa lithium (LiH2PO4na LiOH) muri electrolyte mugihe cyo kwishyuza. Verisiyo igumana ibyiza bya bateri isanzwe ya Li-H mugihe itangiza inyungu zinyongera. Ifasha gukora neza ya lithium no kuyambura hamwe na Coulombic (CE) ya 98.5%. Byongeye kandi, ikora neza ndetse no kuri hydrogène nkeya, igabanya kwishingikiriza kububiko bwumuvuduko mwinshi H₂. Kugereranya kubara, nka Density Functional Theory (DFT) bigereranywa, byakozwe kugirango bumve uburyo lithium na hydrogen ion bigenda muri electrolyte ya bateri.
Iterambere mu buhanga bwa batiri ya Li-H ryerekana amahirwe mashya yo gukemura ibibazo bigezweho byo kubika ingufu, hamwe nibishobora gukoreshwa bikoresha amashanyarazi ashobora kongera ingufu, ibinyabiziga byamashanyarazi, ndetse n’ikoranabuhanga mu kirere. Ugereranije na bateri isanzwe ya nikel-hydrogène, sisitemu ya Li-H itanga ingufu zongerewe ingufu kandi ikora neza, bigatuma iba umukandida ukomeye mububiko bwibisekuruza bizaza. Verisiyo idafite anode ishyiraho urufatiro rwibiciro byinshi kandi byoroshye hydrogène ishingiye kuri bateri.
Impapuro:https://doi.org/10.1002/ange.202419663
(Byanditswe na ZHENG Zihong, Byahinduwe na WU Yuyang)
Igihe cyo kohereza: Werurwe-12-2025